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Visualization Analysis of the Impact of Rubber Agroforestry Ecosystem on Soil Microbial Community
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作者 Jianan Liu Dongling Qi +5 位作者 Chuan Yang Zhixiang Wu Yingying Zhang Qingmao Fu Xianlei Jiang Ruxin Lin 《Advances in Bioscience and Biotechnology》 CAS 2024年第8期486-502,共17页
Rubber agroforestry systems positively impact soil microbial communities. This study employed a bibliometric approach to explore the research status, hotspots, and development trends related to these effects. Using Ci... Rubber agroforestry systems positively impact soil microbial communities. This study employed a bibliometric approach to explore the research status, hotspots, and development trends related to these effects. Using CiteSpace software, we visually analyzed research literature from the Web of Science (WOS) core database, spanning 2004 to 2024. The focus was on the impact of rubber agroforestry ecosystems on soil microbial communities. The results indicate significant attention from Chinese researchers, who have published numerous influential papers in this field. Authors Liu Wenjie have contributed the most papers, although no stable core author group exists. The Chinese Academy of Sciences is the leading research institution in terms of publication volume. While there is close collaboration between different institutions and countries, the intensity of researcher cooperation is low. The most cited literature emphasizes soil nutrients and structure in rubber agroforestry, laying a foundation for soil microorganism studies. Most cited journals are from countries like Netherlands and the United Kingdom. Key research areas include the effects of rubber intercropping on soil microbial communities, agroforestry management, and soil health. Research development can be divided into three stages: the initial stage (2010-2015), the development stage (2015-2020), and the mature stage (2020-2024). Current studies show that rubber intercropping and rubber-based agroforestry systems enhance soil microbial communities, positively impacting soil health. This paper provides a theoretical basis for the sustainable development of rubber agroforestry systems and improved management plans. Future research could explore the effects of species composition on soil microbiological characteristics and develop methods for species interactions. An in-depth study of the soil microbial community’s structure and function, and its relationship with rubber trees, is crucial. Developing effective, rationally designed rubber agroforestry systems and underground soil microbiome technology will promote sustainability and improve plantation productivity. 展开更多
关键词 rubber (hevea brasiliensis) Agroforestry Ecosystem MICROBE CiteSpace BIBLIOMETRICS rubber Intercropping
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Permittivity models for determination of moisture content in Hevea Rubber Latex 被引量:1
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作者 Nor Zakiah Yahaya Zulkifly Abbas +2 位作者 Nursakinah Mohamad Ibrahim Mardiah Hafizah Muhammad Hafizi Muhamad Zamri Yahaya 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2014年第5期48-54,共7页
The commercial open-ended coaxial probe(Agilent 85070E)is the most commonly used sensor to determine the permittivity of wet materials.This paper extends the usability and applicability of the sensor to the estimation... The commercial open-ended coaxial probe(Agilent 85070E)is the most commonly used sensor to determine the permittivity of wet materials.This paper extends the usability and applicability of the sensor to the estimation of moisture content in Hevea Rubber Latex.The dielectric constant and loss factor were measured using the commercial probe whilst the moisture contents were obtained using the standard oven drying method.Comparison results were obtained between the different dielectric models to predict moisture content in latex.Both the dielectric constant and the loss factor of rubber latex linearly increased with moisture content at all selected frequencies.Calibration equations were established to relate both the dielectric constant and the loss factor with moisture content.These equations were used to predict moisture content in Hevea latex from measured values of the dielectric constant and the loss factor.The lowest mean relative error between actual and predicted moisture contents was 0.02 at 1 GHz when using the Cole-Cole dielectric constant calibration equation. 展开更多
关键词 open-ended coaxial probe permittivity models hevea rubber Latex moisture rubber content
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Evaluation of unconstrained and constrained mathematical functions to model girth growth of rubber trees (Hevea brasiliensis) using young agemeasurements 被引量:6
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作者 T.R.Chandrasekhar 《Journal of Forestry Research》 CAS CSCD 2012年第3期365-375,共11页
No attempt has been made to date to model growth in girth of rubber tree (Hevea brasiliansis). We evaluated the few widely used growth functions to identify the most parsimonious and biologically reasonable model fo... No attempt has been made to date to model growth in girth of rubber tree (Hevea brasiliansis). We evaluated the few widely used growth functions to identify the most parsimonious and biologically reasonable model for describing the girth growth of young rubber trees based on an incomplete set of young age measurements. Monthly data for girth of immature trees (age 2 to 12 yearsi from two locations were sub- jected to modelling. Re-parameterized, unconstrained and constrained growth functions,of Richards (RM), Gompertz (GM) and the monomo- lecular 'model ^(MM) were fitted to data. Duration of growth was the firsf constraint introduced. In the stagel We attempted a population aver- age (PA) model to capture the trend in growth. The best PA model was fitted as a subject specific (SS) model. We used appropriate error vari- ance-covariance structure to account for correlation due to repeated measurements over time. Unconstrainecl functions underestimated the asymptotic maximum that did not reflective carrying capacity of the locations. Underestimafions were attributed to the partial set' of meas- urements made during the early growth phase of the trees. MM proved superior to RM and GM. In the randomcoefficient models, both Gf and Go appeared to be influenced by tree level effects. Inclusion of diagonal definite positive matrix removed the correlation between random effects. The results were similar at both locations. In the overall assessment MM appeared as the candidate model for studying the girth-age relationships in Hevea trees. Based on the fitted model we conclude that, in Hevea trees, growth rate is maintained at maximum value at to, then decreases until the final state at dG/dt 〉 0, resulting in yield curve with no period of accelerating growth. One physiological explanation is that photosynthetic activity in Hevea trees decreases as girth increases and constructive metabolism is larger than destructive metabolism. 展开更多
关键词 natural rubber hevea Brasiliensis growth modelling un-constrained functions constrained functions mixed model
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Preliminary Study on Seedling Growth Rhythm and Grey Correlation Analysis of Rubber (Hevea brasiliensis) Seedlings in Danzhou District, Hainan 被引量:5
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作者 Dongling Qi Chuan Yang +2 位作者 Guishui Xie Zhixiang Wu Zhixiang Wu 《American Journal of Plant Sciences》 2014年第26期3866-3872,共7页
The rubber tree physiological and ecological process quantitatively described by using mathematical method is an important means to the analysis of rubber tree growth process and mechanism. The study on growth simulat... The rubber tree physiological and ecological process quantitatively described by using mathematical method is an important means to the analysis of rubber tree growth process and mechanism. The study on growth simulation model of rubber tree will lay the foundation for the application of rubber tree cultivation intelligent decision system. A Richards equation was formulated to describe the height and stem diameter growth dynamics of the annual rubber seedlings. An area correlation analysis was done according to the closeness of the observed parameters to the dynamic curve on the gray system composed of the seedling growth increment and the meteorological factors including aerial temperature, precipitation and solar radiation hours that influence upon the seedling growth. The results showed that rubber seedling response fitted the Richards equation quite well. The growth increment displayed a distinct alternation of 'slow—fast—slow— fast—slow' rhythm. The growth course of the seedlings might be partitioned into three periods of time by the sequential clustering analysis, namely pre-growing, fast-growing, late-growing stage. The tray correlation analysis revealed that air temperature had the most significant influence while precipitation had the least impact on height growth of the rubber seedlings. In conclusion, the air temperature had the most significant influence while solar radiation hours had the least impact on stem diameter growth of the rubber seedlings. 展开更多
关键词 rubber (hevea brasiliensis) RICHARDS Equation Growth RHYTHM Gray Correlation
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Seasonal Changes Impact on Growth of Rubber (<i>Hevea brasiliensis</i>) Seedlings under Different Cultivation
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作者 Dongling Qi Guishui Xie Zhixiang Wu 《Open Journal of Forestry》 2019年第4期397-406,共10页
The vegetative growth of rubber tree is an important basis for rubber tree cultivation and economic management. Stem diameter and height growth patterns of rubber seedlings and the seasonal variability are still poorl... The vegetative growth of rubber tree is an important basis for rubber tree cultivation and economic management. Stem diameter and height growth patterns of rubber seedlings and the seasonal variability are still poorly understood. Studying the annual growth patterns and seasonal variation of rubber seedling will help understanding biological characteristics of rubber tree and provide a reference for field cultivation and management. Height growth and stem diameter of field-sown rubber seedlings cultivation and polybag-raised cultivation all displayed a distinct annual pattern of “slow-fast-slow”. Height growth and stem diameter growth response fitted the logistic equation preferably, supporting the observed pattern. Fast-growth of plant height for polybag-raised rubber seedlings cultivation and field-sown rubber seedlings cultivation occurred from June to November and May to November, respectively. This period saw the greatest accumulations of plant height growth for polybag-raised rubber seedlings cultivation and field-sown rubber seedlings cultivation accounting for 83.99% and 86.65% of total growth, respectively. Fast-growth of stem diameter for polybag-raised rubber seedlings cultivation and field-sown rubber seedlings cultivation occurred from June to November and May to November, respectively. This period saw the greatest accumulations of stem growth for polybag-raised rubber seedlings cultivation and field-sown rubber seedlings cultivation accounting for 86.71% and 84.60% of total growth, respectively. Polybag-raised rubber seedlings cultivation and field-sown rubber seedlings cultivation for the whole year had nine extension units and each month had one extension unit from May to November. Extension unit of for the whole year did not stop period and plant height growth rate has the seasonal difference. However, leaf phenophase of field-sown rubber seedlings cultivation was earlier than that of polybag-raised rubber seedlings cultivation and each extension unit of field-sown rubber seedlings cultivation was greater than that of poly-bag-raised rubber seedlings cultivation. The precipitation had the greatest impact on seedlings growth under different cultivation. There was no period annually in which height growth and stem diameter growth did not occur and the fastest growth occurred during the rainy season. Plant height and stem diameter of rubber seedlings under different cultivation showed isogony phenomenon. Extension unit and leaf phenophase of polybag-raised rubber seedlings and field-sown rubber seedlings showed consistency and synchronization characteristic. Different cultivation of rubber seedling should take corresponding measures tending management and operation. 展开更多
关键词 rubber (hevea brasiliensis) Logistic Equation GROWTH Patterns Seasonal Change
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Studies on Rubber (<i>Hevea brasiliensis</i>) Trees Exist Plant Type after Planting and Available Tapping Tree of Rubber Plantation in China
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作者 Dongling Qi Jiannan Zhou +1 位作者 Guishui Xie Zhixiang Wu 《American Journal of Plant Sciences》 2014年第20期3017-3021,共5页
Existing plant types of rubber tree after planting and available tapping tree were investigated, and there were about 28 rubber plantations with different tapping years of 8 varieties “CATAS7-33-97”, “CATAS8-79”, ... Existing plant types of rubber tree after planting and available tapping tree were investigated, and there were about 28 rubber plantations with different tapping years of 8 varieties “CATAS7-33-97”, “CATAS8-79”, “CATAS7-20-59”, “PR107”, “RRIM600”, “GT1”, “INA873”, “93-114”in South China. The results showed that there were six kinds of existing plant types of rubber tree after planting of rubber plantations, which were available tapping trees, wind damaged trees, cold damaged trees, tapping panel dryness trees, absent trees and weak trees, respectively. These data investigated also showed rubber trees under available tapping, stoppage due to tapping panel dryness, absence, wind damage, cold damage and weakness were counted and calculated and made up for 72.21%, 14.75%, 5.61%, 3.86%, 2.68% and 1.89%. Tapping panel dryness trees, wind damage and absent trees are major factors for the loss of tapping rubber trees in the rubber plantations. Of these investigated varieties, available tapping trees per 100 trees of rubber plantation of “PR107”at the 1st, 12th, 14th, 16th, 20th, 24th tapping year were 96, 67, 70, 75, 66, 46 trees in Hainan planting zone, respectively. Available tapping trees per 100 trees of rubber plantation of “RRIM600”at the 9th, 15th, 20th, 22nd tapping year were 88, 62, 55, 36 trees in Yunnan planting zone, respectively. Available tapping trees per 100 trees of rubber plantation of “93-114” at the 10th, 19th, tapping year were 94, 62 trees in Guangdong planting zone. These results showed that available tapping trees of rubber plantation decreased with increasing tapping age under different planting zones in China. 展开更多
关键词 rubber TREE (hevea brasiliensis) Exist Plant Type Available TAPPING TREE rubber Plantations Different TAPPING Years China
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Exploration and Practice of Rubber Based Agroforestry Complex Systems in China
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作者 Dongling Qi Zhixiang Wu +4 位作者 Chuan Yang Zhongliang Tao Linlin Zhao Yingying Zhang Qingmao Fu 《Advances in Bioscience and Biotechnology》 2023年第12期479-491,共13页
Agroforestry ecosystems are constructed by simulating natural ecosystems, applying the principles of symbiosis in nature, and organizing multiple plant populations to coexist, while conducting targeted cultivation and... Agroforestry ecosystems are constructed by simulating natural ecosystems, applying the principles of symbiosis in nature, and organizing multiple plant populations to coexist, while conducting targeted cultivation and structural control scientifically. Rubber agroforestry complex ecosystems aim for sustainable development in terms of industry, ecology, resource utilization, and the livelihoods of producers. Rubber agroforestry complex ecosystems create a complex production structure system that integrates biology, society, and the economy through species combinations. Rubber trees and associated biological components coordinate with each other, mutually promote growth, and yield a variety of products for producers. Cultivation techniques and patterns of rubber agroforestry are essential components of these ecosystems. This study analyzes the production practices of rubber agroforestry complex cultivation, with a focus on the development and characteristics (complexity, systematicity, intensity, and hierarchy) of rubber agroforestry systems using a literature analysis and a survey approach. It explores the types and scales of complex planting, specifications and forms, and major effects of complex cultivation. This study identifies successful rubber agroforestry cultivation patterns and practical techniques, as well as the potential benefits of developing rubber agroforestry cultivation. It also points out the shortcomings in the development of complex planting, including an emphasis on production practices but insufficient theoretical research, a focus on production but inadequate attention to the market, and an emphasis on yield while overlooking the improvement of standards, brands, and added value. There are various complex patterns for young rubber plantations, but relatively fewer for mature plantations. Based on this analysis, this study suggests that future efforts should focus on in-depth research on interspecies and environmental interactions in rubber agroforestry ecosystems, clearly define key roles, accelerate the innovation of development patterns, and strengthen the foundation for development. It recommends promoting and demonstrating successful rubber agroforestry complex patterns and providing technical training, developing product branding for rubber agroforestry patterns, enhancing product value, expanding the application functions of rubber-forest mixed crop products, and establishing a stable and sustainable industry chain. This study provide practical experience and theoretical insights in rubber agroforestry complex systems from China the potential to enrich the knowledge of rubber agroforestry composite systems, provide practical experience to improve the operating income of smallholders, and even promote the sustainable development of rubber plantations. 展开更多
关键词 rubber Tree (hevea brasiliensis) Agroforestry Ecosystem rubber Intercropping Complex Ecological Cultivation Land Resource
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海南热研73397等5个橡胶树品种全年割胶周期生胶质量变化
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作者 覃怀德 张安洋 +5 位作者 聂智毅 康桂娟 位明明 曾日中 罗微 湛瑞芳 《热带作物学报》 CSCD 北大核心 2024年第6期1226-1234,共9页
天然橡胶的质量和性能与橡胶树品种、割胶生产、气象、物候等遗传和环境因素密切相关。为了探明橡胶树不同品种之间及4—12月全年割胶周期内生胶质量的差异与变化规律,本研究分析比较了PR107、RRIM600、热研917、热研73397和热研879等5... 天然橡胶的质量和性能与橡胶树品种、割胶生产、气象、物候等遗传和环境因素密切相关。为了探明橡胶树不同品种之间及4—12月全年割胶周期内生胶质量的差异与变化规律,本研究分析比较了PR107、RRIM600、热研917、热研73397和热研879等5个橡胶树品种胶乳所制备生胶的质量,并分析了各品种5月份胶乳所制备生胶的硫化特性和硫化胶的力学性能。结果表明:5个橡胶树品种生胶的门尼黏度值、氮(蛋白质)含量、挥发物含量、P0和PRI值等在4—12月全年割胶周期内表现出增加或下降的趋势,这些质量指标既反映出橡胶树品种间的基因型差异,又表现出受气象等环境因素变化的影响。其中,4个品种12月生胶的蛋白质含量均超过3.0%;热研917混炼胶的硫化特性与其他4个品种有明显差异;在S/2 d/3割制下,热研879硫化胶的拉断伸长率和拉伸强度最小。本研究结果一方面有助于指导橡胶树品种选育和割胶生产,另一方面也可以为高性能天然橡胶生产加工提供科技支撑。 展开更多
关键词 橡胶树 橡胶质量与性能 全年割胶周期 海南岛
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巴西橡胶树大、小橡胶粒子在乙烯调控天然橡胶合成中的作用分析
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作者 王丹 徐兵强 +3 位作者 孙勇 彭存智 常丽丽 仝征 《热带作物学报》 CSCD 北大核心 2024年第6期1127-1138,共12页
巴西橡胶树(Heveabrasiliensis)是重要的产胶植物,胶乳中的橡胶粒子(RP)是合成天然橡胶的重要细胞器,但其响应外源乙烯刺激调控天然橡胶合成的具体机制还不清楚。为了明确不同大小RP在此过程中的作用,本研究通过分离外源乙烯刺激后胶乳... 巴西橡胶树(Heveabrasiliensis)是重要的产胶植物,胶乳中的橡胶粒子(RP)是合成天然橡胶的重要细胞器,但其响应外源乙烯刺激调控天然橡胶合成的具体机制还不清楚。为了明确不同大小RP在此过程中的作用,本研究通过分离外源乙烯刺激后胶乳中不同直径的RP,并与对照组进行差异蛋白质组学分析。结果发现:在直径较大的大橡胶粒子(LRP)中鉴定出响应乙烯刺激差异蛋白37个,分别参与天然橡胶合成、糖酵解/糖异生、碳代谢及氨基酸生物合成等代谢通路,其中包含4个REF/SRPP家族成员;在直径较小的小橡胶粒子(SRP)中鉴定出56个差异蛋白,分别参与内质网中的蛋白质加工、内吞及剪接体等代谢通路,其中包含5个REF/SRPP家族成员。关键差异蛋白REF138具有较多等电点(pI)和分子量不同的蛋白亚型,LRP中低于标准等电点(4.80)的REF138亚型响应乙烯刺激积累减少,高于标准等电点的REF138亚型响应乙烯刺激积累增加;与LRP不同,SRP上有更多的REF138亚型响应乙烯刺激发生变化,具有标准分子量(14.7kDa)的REF138亚型响应乙烯刺激积累增加,高于标准分子量的亚型响应乙烯刺激积累减少。针对关键差异蛋白的互作蛋白功能分析发现,REF/SRPP家族成员REF138、REF175、REF258、SRPP117及SRPP204间存在相互作用,可能形成蛋白复合体结合在RP上。除REF/SRPP家族成员外,REF138的互作蛋白主要参与剪接体及内吞代谢通路,REF258的互作蛋白主要参与脂代谢过程与次生代谢产物合成调控。综上,通过对LRP及SRP上响应乙烯刺激差异蛋白及其互作蛋白的功能分析初步揭示了LRP和SRP响应外源乙烯刺激调控天然橡胶合成的代谢调控机制。 展开更多
关键词 巴西橡胶树 橡胶粒子 乙烯 天然橡胶合成调控 蛋白互作
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6个橡胶树新品种在德宏州的区域性试验研究
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作者 李洪坤 王春梅 +7 位作者 张源源 张孝云 普思维 李金涛 侍勋 孟纯兰 殷山山 李守岭 《江西农业学报》 CAS 2024年第10期8-14,共7页
为筛选出适宜德宏植胶区的橡胶树新品种,引进了热研879、热垦628、热研73397、IAN873、热垦525、湛试32713这6个橡胶树新品种,在瑞丽市进行生产性试种,并对引进品种的茎围、产量、干胶含量、死皮率、抗寒性等指标进行了评价。结果表明:... 为筛选出适宜德宏植胶区的橡胶树新品种,引进了热研879、热垦628、热研73397、IAN873、热垦525、湛试32713这6个橡胶树新品种,在瑞丽市进行生产性试种,并对引进品种的茎围、产量、干胶含量、死皮率、抗寒性等指标进行了评价。结果表明:(1)开割前热垦628、热研73397、IAN873的茎围增粗表现较好,第8年达开割标准;开割后湛试32713,热垦628、热研73397和热垦525的茎围平均净增粗较高、速生特性好。(2)平均株次干胶产量表现为热研879极显著高于对照,热垦628显著高于对照;单位面积干胶产量以热垦628与热研879较高,均与对照之间差异极显著;热垦628的平均干胶含量较低,显著低于对照,其他品种与对照之间差异不显著。(3)死皮率表现为热垦628>湛试32713>IAN873>热研879>热研525>云研77-4(CK)>热研73397,4、5级死皮率表现为热垦525>热垦628>热研73397>IAN873>热研879>湛试32713>云研77-4(CK)。(4)热垦628和湛试32713的抗寒性表现较好,IAN873、热研879和热垦525的抗寒性表现较差。鉴于6个橡胶品种在德宏州种植的综合表现,立地环境较好林段可优先选择种植高产品种热研879,以往有轻微寒害发生的林段可选择高产抗寒品种热垦628。 展开更多
关键词 橡胶树 品种 德宏植胶区 区域性试验 干胶含量 死皮率 抗寒性
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机械割胶装备切割仿形机构设计与试验
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作者 王玲玲 黄敞 +3 位作者 陈娃容 张以山 郑勇 黎土煜 《中国农机化学报》 北大核心 2024年第2期62-70,共9页
割胶是收获胶乳的重要途径,传统人力割胶技术专业性强且难度大,劳动强度高,近十年,机械采胶装备研发已成为破解产业掣肘的重要方向。为进一步提高割胶机械的割胶质量和工作平稳性,减少机械割胶伤树,按照传统人工割胶方式建立橡胶树割面... 割胶是收获胶乳的重要途径,传统人力割胶技术专业性强且难度大,劳动强度高,近十年,机械采胶装备研发已成为破解产业掣肘的重要方向。为进一步提高割胶机械的割胶质量和工作平稳性,减少机械割胶伤树,按照传统人工割胶方式建立橡胶树割面的割胶轨迹方程,设计一种由导向器、割胶刀体、斜度装配体等部件组成的能够限深限厚的切割仿形机构。分析导向器、割胶刀体、斜度装配体等关键部件在割胶过程中的理论受力,并以手持式自动割胶机为试验本体,对设计的仿形切割机构开展大田割胶试验。结果表明:使用切割仿形机构割胶,更加贴合割面和割线,能够沿割胶轨迹切割出条状树皮,能够进行限深限厚仿形切割,减少伤树,切割平均负载电流稳定在1.0~1.5 A,与传统割胶模式相比,耗皮量比设置的上限值平均降低约10%,割胶深度约增加8%,验证切割仿形机构的设计,满足割胶技术要求。为天然橡胶产业机械化、智能化割胶装备关键切割部件的研发提供参考。 展开更多
关键词 橡胶树 割胶装备 切割仿形机构 割胶轨迹 限深限厚
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橡胶树与白粉病菌Oidium heveae亲和互作组织细胞学研究 被引量:19
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作者 万三连 梁鹏 +3 位作者 刘文波 张宇 缪卫国 郑服丛 《植物保护》 CAS CSCD 北大核心 2014年第3期26-36,共11页
白粉病是橡胶树生产中最重要的病害之一,是由粉孢属病菌Oidium heveae Steinm.引起。目前,对该病原菌在寄主中侵染行为及其与寄主互作的组织细胞学尚缺乏系统研究。本文利用显微技术,结合多种染色方法,观察了橡胶树白粉菌侵染橡胶树叶... 白粉病是橡胶树生产中最重要的病害之一,是由粉孢属病菌Oidium heveae Steinm.引起。目前,对该病原菌在寄主中侵染行为及其与寄主互作的组织细胞学尚缺乏系统研究。本文利用显微技术,结合多种染色方法,观察了橡胶树白粉菌侵染橡胶树叶组织的细胞学变化及寄主的抗性反应。O.heveae在寄主上发育要经历5个关键发育时间点,即分生孢子萌发高峰(4hpi)、附着胞形成高峰(8hpi)、侵入结构(初生吸器)形成高峰(15hpi)、次生菌丝形成高峰(24hpi)、分生孢子梗形成高峰(5dpi);分生孢子萌发侵入寄主前,其能量来自自身贮存的能量物质。在互作过程中,病原菌初生吸器形成之后,橡胶树叶组织开始出现明显的氧暴发、胼胝质和乳突等抗性反应,活性氧在橡胶树与病原菌互作中起到了重要的作用,当橡胶树叶片中活性氧积累较低时,有利于O.heveae的发育及入侵,活性氧积累较高时,则引发寄主氧暴发等以阻止病原菌进一步扩展。O.heveae在寄主上发育的5个关键发育时间点分别属于病原菌侵染前期、潜育期和侵染后期,橡胶树叶组织早期亲和互作与中后期非亲和互作保持了专性寄生菌与寄主间发育平衡的进化关系。 展开更多
关键词 橡胶树 橡胶树白粉菌 侵染 细胞学
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Characteristics of Soil Organic Carbon and Total Nitrogen in Rubber Plantations Soil at Different Age Stages in the Western Region of Hainan Island 被引量:17
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作者 吴志祥 谢贵水 +2 位作者 陶忠良 周兆德 王旭 《Agricultural Science & Technology》 CAS 2010年第1期147-153,共7页
[Objective]The aim was to study on the characteristics of soil organic carbon and nitrogen in rubber (Hevea brasiliensis Muell-Arg) plantations at different age stages in the western region of Hainan Island,so as to... [Objective]The aim was to study on the characteristics of soil organic carbon and nitrogen in rubber (Hevea brasiliensis Muell-Arg) plantations at different age stages in the western region of Hainan Island,so as to evaluate the ecological benefits of rubber plantations and provide basic data for studying the effect of tropical land utilization/cover change on the global carbon and nitrogen cycle. [Method]The situs was in Danzhou city,western region of Hainan Island,and the samples were four kinds of rubber plantations soil at different ages and one kind of control check (pepper,Piper nigrum L.) soil. In this research,four quadrats were set up in each sample,and the size of each was 20 cm×20 cm. Four specimens were gathered from four layers of 0-15,15-30,30-45,45-60,and the average of them was the last analysis result of each sample. Soil density was measured by cutting ring method,soil containing and hygroscopic water was detected by oven drying method,soil organic carbon (SOC) was measured by low temperature heated outside potassium dichromate oxidation-colorimetry method,and soil total nitrogen (STN) was detected by semimicro Kjeldahl method. [Result]SOC contents of different layers in rubber plantations soil at different age stages (including the CK pepper soil,the same as below) varied little,and the content of SOC in surface layer (0-15 cm) was higher,while the underlayer (45-60 cm) was lower than the average value; there was significant difference in SOC content among different kinds of soil,and the content was of 6.03-7.78 g/kg,tapping young trees (7 years) CK pepper mature age trees (30 years) prophase of young trees (2 years) tapping trees (16 years); there was no significant difference in SOC storage among different kinds of soil,and the storage was of 61.33-74.29 t/hm2,mature age trees (30 years) tapping young trees (7 years) prophase of young trees (2 years) CK pepper tapping trees (16 years); there was significant difference in STN content among rubber plantations soil at different age stages,the content was of 410.86-664.14 mg/kg2,CK pepper tapping young trees (7 years) prophase of young trees (2 years) mature age trees (30 years) tapping trees (16 years),and STN content of tapping trees (16 years) soil was extremely lowest; there was significant difference in C/N ratio among different kinds of soil,the ratio was of 10.94-14.47,and the ratio of tapping trees (16 years) mature age trees (30 years) tapping young trees (7 years) CK pepper prophase of young trees (2 years). [Conclusion]There wasn't unhealthy effect of rubber trees planted in tropical area on the content and storage of SOC,the content of STN and the ratio of C/N. there was no significant difference between rubber plantations and CK pepper soil,and the effects of rubber plantation on soil carbon-nitrogen was similar to that of other tropical crops (such as pepper). 展开更多
关键词 Different age stages of trees rubber hevea brasiliensis) plantations Soil organic carbon (SOC) Soil total nitrogen (STN) Hainan Island
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植物激素调控橡胶树产排胶机制研究进展
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作者 郭冰冰 刘明洋 +2 位作者 代龙军 杨洪 王立丰 《植物研究》 CAS CSCD 北大核心 2024年第2期161-167,共7页
巴西橡胶树(Hevea brasiliensis)是重要热带经济作物之一,其次生代谢产物天然橡胶(NR)是中国重要的工业原料及战略物资。植物激素对植物生长发育、萌发和环境应答等多方面均具有重要调控作用。本文详细介绍了乙烯、脱落酸、油菜素内酯... 巴西橡胶树(Hevea brasiliensis)是重要热带经济作物之一,其次生代谢产物天然橡胶(NR)是中国重要的工业原料及战略物资。植物激素对植物生长发育、萌发和环境应答等多方面均具有重要调控作用。本文详细介绍了乙烯、脱落酸、油菜素内酯和赤霉素4种植物激素在橡胶树生长发育、橡胶生物合成、产排胶和品质形成等关键环节中应用的研究进展,并展望4种激素在提高橡胶树产排胶机制研究中的应用前景,为支撑橡胶产业发展提供理论支撑。 展开更多
关键词 橡胶树 排胶 植物激素 天然橡胶 生物合成
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橡胶白粉菌(Oidium heveae Steinmann)基因组DNA的提取方法 被引量:12
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作者 高宏华 刘先宝 +1 位作者 罗大全 黄贵修 《热带农业科学》 2007年第6期8-11,共4页
比较了2种菌源、3种方法提取橡胶树白粉病病原真菌橡胶白粉菌(Oidium heveae BA.Steinmann)基因组DNA的效果。结果表明:无论采用单斑分离法收集还是直接收集橡胶白粉菌菌体,无论采用石英砂振荡破壁法、氯化苄法还是尿素法提取,均能获得... 比较了2种菌源、3种方法提取橡胶树白粉病病原真菌橡胶白粉菌(Oidium heveae BA.Steinmann)基因组DNA的效果。结果表明:无论采用单斑分离法收集还是直接收集橡胶白粉菌菌体,无论采用石英砂振荡破壁法、氯化苄法还是尿素法提取,均能获得满足常规分子生物学操作要求的基因组DNA;在基因组DNA的提取产率、完整性方面,各种方式之间略有差异,但无显著差别;2种来源菌体的基因组DNA的ITS序列分析结果一致,说明在无法进行单斑分离的情况下,可以利用直接收集的菌体提取基因组DNA。 展开更多
关键词 橡胶白粉菌 基因组DNA 提取方法 PCR 橡胶树白粉病 病原菌 真菌病害
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An Analysis of the Patents concerning Hevea brasiliensis
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作者 Xijuan LI Qing CHEN +3 位作者 Bingjiang XU Xinxin REN Huasun HUANG Qiong LI 《Asian Agricultural Research》 2015年第9期58-61 64,64,共5页
This paper mainly analyzes the application data of patents concerning Hevea brasiliensis in the world and China from the perspectives of time,research field,and the geographical distribution of applicants. It also int... This paper mainly analyzes the application data of patents concerning Hevea brasiliensis in the world and China from the perspectives of time,research field,and the geographical distribution of applicants. It also interprets the patents for invention in China from time,research field,and types of applicants. Based on the study,it shows that although the patent applications fluctuate,the general trend is rising. And the patents are mostly concentrated in plant protection,and agricultural biotechnology. The Chinese applicants of patents for invention largely work in the research institutes,and most of these patents focus on the field of plant protection,agricultural biotechnology,and agro-processing.However,the foreign applicants mainly work in companies,and most of these patents only focus on plant protection. These findings will provide a reference for formulating development policies about natural rubber industry in China. 展开更多
关键词 NATURAL rubber hevea brasiliensis PATENT ANALYSIS
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Evaluation of Brazilian wild Hevea germplasm for cold tolerance:genetic variability in the early mature growth
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作者 G.Prabhakara Rao P.C.Kole 《Journal of Forestry Research》 SCIE CAS CSCD 2016年第4期755-765,共11页
Hevea brasiliensis is a commercially cultivated species for its natural rubber(NR) latex in South East Asian countries. To meet the ever-increasing demand, NR cultivation has been extended to non-traditional regions... Hevea brasiliensis is a commercially cultivated species for its natural rubber(NR) latex in South East Asian countries. To meet the ever-increasing demand, NR cultivation has been extended to non-traditional regions due to the limited scope of further expansion in traditional rubbergrowing areas in India. These areas are often confronted with various abiotic stresses, especially high and low temperatures, which cause reduction in plant growth, thereby increasing its uneconomical immaturity period. Eighteen wild Hevea accessions along with two modern clones RRII203 and PB 235 and two check clones RRIM 600 and Haiken 1 were evaluated in the early mature growth phase.The site was at Nagrakata, West Bengal, the sub-Himalayan cold-prone region of India. In Hevea, crop production is governed by two major factors, growth-vigor and production capacity. Growth-vigor is of special importance because the production of rubber is a process linked with the early growth of the plant, which results in early tappability and early economic gains. The genotypes exhibited highly significant clonal differences(P = 0.05) for all the growth traits. Tappability percentage in the seventh year, ranged from 0.33 %(AC 3074, AC 3075, AC 3293) to 89.67 %(RO 2727). The most vigorously growing accession(RO2727) reached tappabile girth early in the seventh year when the girth of plant ranged from 22.38 cm(AC 3293) to53.12 cm(RO 2727). The general mean was 43.32 cm, and the similar growth trend was exhibited by these accessions in the tenth year also. Annual girth increment(cm a-1) over3 years ranged from 1.81 cm(AC 3075) to 6.80 cm(RO2727). The mean winter girth increment(cm a-1) over4 years ranged from 0.13 cm(AC 3075) to 0.96 cm(RO2727) as compared to the check clone RRIM 600(1.11 cm)and Haiken 1(1.10 cm). Wide differences between the phenotypic coefficient of variation(50.29) and genotypic coefficient of variation(24.82) were observed for winter girth increment. Girth in the tenth year recorded the highest heritability(87 %). Girth was significantly correlated with the other growth traits. The top 30 % of the potential accessions showing high growth vigour and early tappability under cold stress were identified. These ecotypes/selections have high potential value for the development of coldtolerant clones for these regions and also in broadening the genetic base of the present-day cultivated rubber. 展开更多
关键词 hevea germplasm mature cultivated phenotypic ranged abiotic rubber accession breeding
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4个引进橡胶树胶木兼优品种比较试验 被引量:3
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作者 张晓飞 黄肖 李维国 《热带作物学报》 CSCD 北大核心 2023年第3期526-534,共9页
为了能够客观地筛选出适合我国植胶环境的橡胶树胶木兼优新品种,基于品种比较试验对4个国外引进品种‘热试09-5’‘热试09-6’‘热试09-7’和‘热试09-10’的产量及副性状进行综合评价。结果表明,4个参试品种中,‘热试09-7’表现出速生... 为了能够客观地筛选出适合我国植胶环境的橡胶树胶木兼优新品种,基于品种比较试验对4个国外引进品种‘热试09-5’‘热试09-6’‘热试09-7’和‘热试09-10’的产量及副性状进行综合评价。结果表明,4个参试品种中,‘热试09-7’表现出速生性状,4个参试品种的产量特性不明显,仅‘热试09-5’在开割第1年与对照相当,其他年份均低于对照。胶乳生理参数分析结果表明,‘热试09-5’的干胶产量、排胶初速度与对照差异不显著,而蔗糖含量低,硫醇含量高,认为该品种产胶潜力大,胶乳稳定性好,排胶快,糖利用率高。‘热试09-6’原生皮厚度较厚,树皮中乳管列数多,与‘RRIM600’相比,干胶含量、堵塞指数高,排胶初速度和蔗糖含量差异不显著,认为该品种有较好的产胶潜力,但胶乳代谢强度低,可考虑通过刺激提高代谢强度,达到增产的目的;各参试品种的生胶性能、硫化胶的物理机械性能及分子量和分子量分布差异分析结果表明,不同指标参数在品种间存在差异,‘热试09-5’的塑性初值最低,塑性保持率最大,‘热试09-6’门尼粘度最高,‘热试09-5’最低,‘热试09-7’有较大的重均分子量,呈现出较好的物理机械性能。在抗逆性表现方面,‘热试09-5’的风害断倒率最小,‘热试09-10’最高;抗寒前哨数据结果表明,在对照品种‘93-114’无寒害发生的情况下,‘热试09-5’寒害等级为1.00,‘热试09-7’为0.17。综合分析表明,4个引进品种的速生性状明显,‘热试09-6’有较好的产胶潜力,‘热试09-5’的抗风性优于对照,‘热试09-7’的寒害适应能力较好。综上表明‘热试09-6’综合性状较好,适合在海南中西部轻风区生产性试种。 展开更多
关键词 橡胶树 引进品种 产胶特性 干胶产量 适应性
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橡胶/香露兜间作对香露兜香气成分的影响 被引量:1
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作者 张昂 李丽华 +5 位作者 钟壹鸣 钟大玲 秦晓威 吉训志 周艳飞 鱼欢 《热带作物学报》 CSCD 北大核心 2023年第3期535-544,共10页
香露兜是中国热带地区特色香料作物之一,其叶片香气成分含量是鉴定香露兜品质的关键指标。香露兜适宜在遮阴条件下种植,其中在橡胶林下间作香露兜是海南地区常见的栽培模式,但橡胶间作香露兜后对香露兜叶片香气成分的影响仍未探明。本... 香露兜是中国热带地区特色香料作物之一,其叶片香气成分含量是鉴定香露兜品质的关键指标。香露兜适宜在遮阴条件下种植,其中在橡胶林下间作香露兜是海南地区常见的栽培模式,但橡胶间作香露兜后对香露兜叶片香气成分的影响仍未探明。本研究拟通过盆栽试验,对比橡胶/香露兜间作处理和香露兜单作条件下土壤理化性质和香露兜叶片香气成分种类与含量的差异。结果表明,橡胶/香露兜间作处理与香露兜单作相比,显著提高土壤容重13.63%,土壤碱解氮含量59.71%,土壤速效磷含量193.03%、土壤速效钾含量9.78%,土壤pH降低1.00(P<0.05);间作和单作处理共检测出10类68种香气成分,间作与单作相比,酮类、呋喃类、呋喃酮类、烃类和酚类的物质种类数量分别减少56.52%、14.29%、33.33%、20.00%、28.57%(P<0.05);尽管呋喃类、烃类和酮类的香气成分含量分别显著减少65.28%、20.88%和69.00%,但醇类、呲咯类、酯类和呋喃酮类香气成分含量分别增加31.50%、597.56%、122.78%、96.89%(P<0.05)。土壤pH降低是香露兜叶片酮类、呋喃类、呋喃酮类、烃类和酚类香气成分组成减少的主要原因;间作模式通过降低pH、提高土壤速效磷和碱解氮含量显著提高醇类、呲咯类、酯类含量,减少呋喃类、烃类含量;吡咯类物质是香露兜叶片主要香气成分物质,因此,橡胶/香露兜间作模式显著促进香露兜香品质提升。研究结果对优化和推广橡胶间作香露兜具有积极作用,有助于促进胶农增收以及相关产业的可持续发展。 展开更多
关键词 橡胶树 香露兜 间作 香气成分 土壤 理化性质
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巴西橡胶树品系对棒孢霉落叶病的抗病性鉴定 被引量:8
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作者 张贺 张欣 +3 位作者 蒲金基 漆艳香 谢艺贤 张辉强 《植物保护》 CAS CSCD 北大核心 2008年第4期54-56,共3页
采用巴西橡胶树棒孢霉落叶病病原菌的分生孢子接种和其毒素接种分别测定了国内天然橡胶主产区9个主栽品系的抗病性,结果表明过滤灭菌毒素划伤接种橡胶离体小叶片可以产生与分生孢子接种相似的症状,而不划伤接种则不产生病害症状;121℃、... 采用巴西橡胶树棒孢霉落叶病病原菌的分生孢子接种和其毒素接种分别测定了国内天然橡胶主产区9个主栽品系的抗病性,结果表明过滤灭菌毒素划伤接种橡胶离体小叶片可以产生与分生孢子接种相似的症状,而不划伤接种则不产生病害症状;121℃、20 min湿热灭菌毒素接种无论划伤与否均不产生病害症状;分生孢子和病原菌毒素两种接种方法所测橡胶品系的抗病性之间有很好的一致性,说明毒素接种可以用来代替病原菌接种测定橡胶品系的抗病性。抗病性测定结果显示,供试9个巴西橡胶树品系中,PB86、热研88-13、南华1、PR107、热研7-33-97对病原菌表现出高抗,而RRIM600、南强1-97、热研44-9则表现高感,GT1则表现中感。 展开更多
关键词 巴西橡胶树 多主棒孢 毒素 抗病性
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