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A novel Effective Panicle Number per Plant 4 haplotype enhances grain yield by coordinating panicle number and grain number in rice
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作者 Yun Wang Xiaoqian Wang +6 位作者 Laiyuan Zhai Sundus Zafar Congcong Shen Shuangbing Zhu Kai Chen Yun Wang Jianlong Xu 《The Crop Journal》 SCIE CSCD 2024年第1期202-212,共11页
Increasing effective panicle number per plant(EPN)is one approach to increase yield potential in rice.However,molecular mechanisms underlying EPN remain unclear.In this study,we integrated mapbased cloning and genome-... Increasing effective panicle number per plant(EPN)is one approach to increase yield potential in rice.However,molecular mechanisms underlying EPN remain unclear.In this study,we integrated mapbased cloning and genome-wide association analysis to identify the EPN4 gene,which is allelic to NARROW LEAF1(NAL1).Overexpression lines containing the Teqing allele(TQ)of EPN4 had significantly increased EPN.NIL-EPN4^(TQ) in japonica(geng)cultivar Lemont(LT)exhibited significantly improved EPN but decreased grain number and flag leaf size relative to LT.Haplotype analysis indicated that accessions with EPN4-1 had medium EPN,medium grain number,and medium grain weight,but had the highest grain yield among seven haplotypes,indicating that EPN4-1 is an elite haplotype of EPN4 for positive coordination of the three components of grain yield.Furthermore,accessions carrying the combination of EPN4-1 and haplotype GNP1-6 of GNP1 for grain number per panicle showed higher grain yield than those with other allele combinations.Therefore,pyramiding of EPN4-1 and GNP1-6 could be a preferred approach to obtain high yield potential in breeding. 展开更多
关键词 RICE effective panicle number per plant Grain number per panicle HAPLOTYPE Grain yield potential
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Inter-Row Spacing of PV Power Plant
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作者 Laiqat Ali Khan 《Energy and Power Engineering》 2024年第3期121-129,共9页
When designing a solar power plant, it is much more important to avoid the shadow on the PV Panels. As the shadow falls on the PV Panels;it significantly reduces the generation of required power as planned and designe... When designing a solar power plant, it is much more important to avoid the shadow on the PV Panels. As the shadow falls on the PV Panels;it significantly reduces the generation of required power as planned and designed. This research paper and case study will help a lot to avoid shadow, especially when selecting inter-row spacing between the strings of solar power plants. 展开更多
关键词 Inter Row Spacing Shadow effect on PV plant Hot Spot Heating
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Assessing the Efficacy of Lemongrass (Cymbopogon citratus) and Sambong (Blumea balsamifera) Extracts in Combating Black Pod Disease: Sustainable Solutions for Controlling Phytophthora megakarya in Cameroon’s Cocoa Plantations
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作者 Gertrude Membang James Michel Tchotet Tchoumi +5 位作者 Godswill Ntsomboh Ntsefong Emmanuel Yvan Mba Ela Sylvere Landry Lontsi Dida Ludovic Tchuenkam Tsango Pascal Loïc Ekango Mbondjo Fritz Oben Tabi 《American Journal of Plant Sciences》 CAS 2024年第7期519-537,共19页
The use of plant extracts as antifungal agents is gaining increasing attention, particularly for the control of black pod disease in cocoa. Despite extensive research, current strategies haven’t been entirely effecti... The use of plant extracts as antifungal agents is gaining increasing attention, particularly for the control of black pod disease in cocoa. Despite extensive research, current strategies haven’t been entirely effective. This study evaluated the effectiveness of Cymbopogon citratus and Blumea balsamifora leaf extracts, both individually and in combination, against Phytophthora megakarya. We assessed the efficacy of the most promising combination (75% B. balsamifera, 25% C. citratus) after storage at room temperature for up to 9 days. Agar microdilution and in vivo bioassays were conducted to determine antifungal susceptibility and effectiveness. Blumea extract exhibited the highest overall inhibitory activity, with the lowest minimum inhibitory concentration (117 µl mL−1) while C. citratus had a narrower range of MIC (146 to 233 µl mL−1). The combination of C. citratus and B. balsamifera demonstrated a synergistic effect against P. megakarya, achieving growth inhibition on V8 media (92.72 ± 4.20% to 100%) and on artificially infected detached pod cortex (92.24 ± 4.53% to 98.75 ± 1.25%), which was not significantly different from the positive control (Ridomil). Furthermore, this combination maintained its effectiveness for up to 9 days at room temperature. These findings suggest that combining plant extracts can enhance their antifungal properties. 展开更多
关键词 plant Extracts Antifungal Agents Synergistic effect Black Pod Disease Cocoa
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Effects of Pigment Indicators on the Color Expression of Leaves of the Colored-leaf Garden Plants 被引量:1
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作者 唐存莲 《Agricultural Science & Technology》 CAS 2014年第11期1928-1934,共7页
[Objective] In this study, the relationship between the pigments and the color expression of leaves of colored-leaf plants was discussed. [Method] The colors of leaf blades of 6 kinds of plants were analyzed with the ... [Objective] In this study, the relationship between the pigments and the color expression of leaves of colored-leaf plants was discussed. [Method] The colors of leaf blades of 6 kinds of plants were analyzed with the Royal Horticultural Soci-ety Colour Chart. The chlorophyl content, carotenoids content and anthocyanin con-tent in leaf blades were determined. In addition, the color types of leaf blades, kinds of pigments, pigment contents and pigment distributions of 6 kinds of plants were compared. [Result] The chlorophyl contents ranked as Populus canadensis Moench (green leaves) 〉 Populus deltoids cv. Zhonghuahongye (purple green leaves) 〉 Populus euramericana cv. Quanhong (red leaves); Acer palmatum Thunb. (green leaves) 〉 Acer palmatum cv. Atropurpureum (purple red leaves) 〉 Acer pal-matum Thunb. cv. Atropurpureum (red leaves). The ranking of anthocyanin contents was just opposite. The chlorophyl content was negatively related to the anthocyanin content. The leaf color of plants is determined by various pigments. The more the chlorophyl is, the greener the leaf is. The more the anthocyanin is, the redder the leaf is. In the colored-leaf plants, the chlorophyl content represents about 80% of the content of pigments, the carotenoids content represents about 17%, and the an-thocyanin represents about 3%. There is a difference in the chlorophyl content be-tween colored-leaf plants and green plants. However, the relatively low chlorophyl content wil not hamper the normal life activities of colored-leaf plants. [Conclusion] We hoped to provide reference and basis for the production and landscaping of col-ored-leaf plants. 展开更多
关键词 Pigment indicator Colored-leaf garden plant Color expression effect
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Control Effect of Floating Plants Constructed Wetland to Nitrogen and Phosphorus Pollution from Rice Field Drainage 被引量:16
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作者 方荣杰 谭茂兰 《Meteorological and Environmental Research》 CAS 2010年第11期70-72,共3页
[Objective] The control effect of floating plants constructed wetland to nitrogen and phosphorus pollution from rice field drainage was studied.[Method] Firstly,the characteristic of floating plants and the purificati... [Objective] The control effect of floating plants constructed wetland to nitrogen and phosphorus pollution from rice field drainage was studied.[Method] Firstly,the characteristic of floating plants and the purification principle of pollutants were introduced,and then purification effect was analyzed through controlling nitrogen and phosphorus pollution from rice field drainage by floating plants constructed wetland.[Result] By means of floating plants constructed wetland,the average removal rate of total nitrogen(TN) from double-season early and late rice field drainage reached 52.17% and 62.23%,respectively,while that of total phosphorus(TP) was 45.69% and 74.37%,respectively,with better removal effect.Meanwhile,floating plants have ecological and ornamental value to some extent.[Conclusion] Floating plants constructed wetland could not only control nitrogen and phosphorus pollution in field drainage effectively but also keep farmland ecosystem in healthy state. 展开更多
关键词 Floating plants Constructed wetland TN TP Purification effect China
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Medical plant extracts and natural compounds with a hepatoprotective effect against damage caused by antitubercular drugs: A review 被引量:4
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作者 María Adelina Jiménez-Arellanes Gabriel Alfonso Gutiérrez-Rebolledo +1 位作者 Mariana Meckes-Fischer Rosalba León-Díaz 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2016年第12期1116-1125,共10页
Drug-induced liver injury encompasses a spectrum of diseases ranging from mild biochemical abnormalities to acute liver failure; example of this scenery is hepatotoxicity caused by the first-line antituberculous drugs... Drug-induced liver injury encompasses a spectrum of diseases ranging from mild biochemical abnormalities to acute liver failure; example of this scenery is hepatotoxicity caused by the first-line antituberculous drugs isoniazid, rifampin and pyrazinamide, which are basic for treatment of drug-sensible and drug-resistant tuberculosis. In the search for pharmacological alternatives to prevent liver damage, antitubercular drugs have been the subject of numerous studies and published reviews, a great majority of them carried out by Asian countries. At the same time, hepatoprotectors from plant source are now emerging as a possible alternative to counteract the toxic effects of these therapeutic agents. The present review aims to highlight the most recent studies on the subject, based information published in scientific databases such as Scopus and Pub Med. 展开更多
关键词 Medicinal plants Hepatoprotective effect Antitubercular drugs-induced HEPATOTOXICITY Natural compounds
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Synergistic effects of plant extracts and antibiotics on Staphylococcus aureus strains isolated from clinical specimens 被引量:3
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作者 Ghaleb Adwan Mohammad Mhanna 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2009年第3期46-51,共6页
Objective:This study has been done to evaluate the interaction between water extracts of Psidium guajava, Rosmarinus officinalis,Salvia fruticosa,Majorana syriaca,Ocimum basilucum,Syzygium aromaticum,Laurus nobilis,an... Objective:This study has been done to evaluate the interaction between water extracts of Psidium guajava, Rosmarinus officinalis,Salvia fruticosa,Majorana syriaca,Ocimum basilucum,Syzygium aromaticum,Laurus nobilis,and Rosa damascena alone and then synergy testing of these extracts with known antimicrobial agents including oxytetracycline HCl,gentamicin sulfate,penicillin G,cephalexin and enrofloxacin.This study was conducted against five S.aureus isolates;one is Methicillin -resistant Staphylococcus aureus(MRSA) and 4 Methicillin - sensitive Staphylococcus aureus(MSSA).Methods:Evaluation of the interaction between plant extracts and different antimicrobial agents has been done using well - diffusion and microdilution methods. Results:The results of the conducted experiments using well - diffusion method demonstrate that these plants showed in vitro interactions between antimicrobial agents and plant extracts were additive,while using microdilution method showed synergistic effects with significant reduction in the MICs of the test antibiotics against these strains of S.aureus.This change in MIC was noticed in all plant extracts against test antibiotics including these plants showed weak antibacterial activity by well diffusion method.Synergism effect was occurred in both sensitive and resistant strains but the magnitude of minimum fold reduction of inhibitory concentration in resistant strains especially MRSA strain was higher than the sensitive strains.Coclusion:This study probably suggests the possibility of concurrent use of these antimicrobial drugs and plant extracts in combination in treating infections caused by S.aureus strains or at least the concomitant administration may not impair the antimicrobial activity of these antibiotics. 展开更多
关键词 plant EXTRACTS SYNERGISTIC effects ANTIMICROBIAL agents Microdilution METHOD Well diffusion METHOD
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Mapping QTLs with epistatic effects and QTL×environment interactions for plant height using a doubled haploid population in cultivated wheat 被引量:37
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作者 Kunpu Zhang Jichun Tian Liang Zhao Shanshan Wang 《Journal of Genetics and Genomics》 SCIE CAS CSCD 北大核心 2008年第2期119-127,共9页
Quantitative trait loci (QTLs) for plant height in wheat (Triticum aestivum L.) were studied using a set of 168 doubled haploid (DH) lines, which were derived from the cross Huapei 3/Yumai 57. A genetic linkage ... Quantitative trait loci (QTLs) for plant height in wheat (Triticum aestivum L.) were studied using a set of 168 doubled haploid (DH) lines, which were derived from the cross Huapei 3/Yumai 57. A genetic linkage map was constructed using 283 SSR and 22 EST-SSR markers. The DH population and the parents were evaluated for wheat plant height in 2005 and 2006 in Tai'an and 2006 in Suzhou. QTL analyses were performed using the software of QTLNetwork version 2.0 based on the mixed linear model. Four additive QTLs and five pairs of epistatic effects were detected, which were distributed on chromosomes 3A, 4B, 4D, 5A, 6A, 7B, and 7D. Among them, three additive QTLs and three pairs of epistatic QTLs showed QTL×environment interactions (QEs). Two major QTLs, Qph4B and Qph4D, which accounted for 14.51% and 20.22% of the phenotypic variation, were located similar to the reported locations of the dwarfing genes Rhtl and Rht2, respectively. The Qph3A-2 with additive effect was not reported in previous linkage mapping studies. The total QTL effects detected for the plant height explained 85.04% of the phenotypic variation, with additive effects 46.07%, epistatic effects 19.89%, and QEs 19.09%. The results showed that both additive effects and epistatic effects were important genetic bases of wheat plant height, which were subjected to environmental modifications, and caused dramatic changes in phenotypic effects. The information obtained in this study will be useful for manipulating the QTLs for wheat plant height by molecular marker-assisted selection (MAS). 展开更多
关键词 doubled haploid population epistatic effects plant height quantitative trait loci QTL×environment interactions wheat (Triticum aestivum L.)
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Psychophysiological Effects of Bamboo Plants on Adults 被引量:8
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作者 Ahmad Hassan CHEN Qi Bing +12 位作者 JIANG Tao LYU Bing Yang LI Nian LI Shu SHANGGUAN Zi Yue LI Yun Ting JUN Zhou Li LUO Qian CHEN Xin Yi WANG Yi Yan ZENG Cheng Cheng YANG Jun Muhammad Sohaib Tahir 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2017年第11期846-850,共5页
The present study was conducted to clarify the psychophysiological relaxation effects of viewing bamboo on university students. Forty healthy Chinese participants enrolled in this study to clarify the psychophysiologi... The present study was conducted to clarify the psychophysiological relaxation effects of viewing bamboo on university students. Forty healthy Chinese participants enrolled in this study to clarify the psychophysiological relaxation effects of viewing bamboo. The effects of visual stimulation using a pot both with and without a bamboo were recorded by measuring the student's blood pressure, EEG and STAI. We observed that viewing bamboo plants resulted in significantly lower systolic(female, P 〈 0.001; male, P 〈 0.001; P 〈 0.05) and diastolic(female,P 〈 0.001; male, P 〈 0.001; P 〈 0.05) blood pressures, but no changes in the pulse rate(female, P = 0.09; male, P = 0.07; P 〉 0.05) were observed. The results of the EEG analysis indicated brainwave variation(all P 〈 0.05) and lower anxiety scores(P 〈 0.01) after 3 min of viewing bamboo compared with the control. These findings indicate that visual stimulation with bamboo plants induced psychophysiological relaxation effects on adults. 展开更多
关键词 Psychophysiological effects o Bamboo plants on Adults
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Effects of Eichhornia crassipes Growth on Aquatic Plants in Dianchi Lake
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作者 WU Fu-qin LIU Tian-meng +2 位作者 WANG Zu-tao WANG Yue-hua HE Shu-zhuang 《Meteorological and Environmental Research》 CAS 2011年第2期74-75,79,共3页
[Objective] The aim was to study the effects of Eichhornia crassipes as an invasive plant on aquatic plants in Dianchi Lake. [Method] Based on the determination of chlorophyll content of phytoplankton and submerged pl... [Objective] The aim was to study the effects of Eichhornia crassipes as an invasive plant on aquatic plants in Dianchi Lake. [Method] Based on the determination of chlorophyll content of phytoplankton and submerged plant (Potamogeton pectinatus) in Dianchi Lake in different months, the effects of E. crassipes on aquatic plants in Dianchi Lake were studied, and the allelopathy effect of root culture solution of E. crassipes on Microcystis aquaticum was discussed. [Result] The growth of E. crassipes in Dianchi Lake reduced the chlorophyll content of phytoplankton and submerged plant (P. pectinatus), and it showed that E. crassipes had certain inhibitory effect on their growth; the culture solution of E. crassipes root inhibited M. aeruginosa growth obviously. [Conclusion] The study could provide scientific references for the prevention and control of ecological safety of E. crassipes. 展开更多
关键词 Eichhornia crassipes Aquatic plant Allelopathy effect Chlorophyll content China
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Immunomodulatory effects of selected Malaysian plants on the CD18/11a expression and phagocytosis activities of leukocytes
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作者 Nurul Hikmah Harun Abdi Wira Septama Ibrahim Jantan 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2015年第1期48-53,共6页
Objective:To investigate the effects of 20 methanolic extracts from Malaysian selected plants on CD18/11 a expression and phagocytosis activity of leukocytes using flow cytometry analysis.Methods:The effects of methan... Objective:To investigate the effects of 20 methanolic extracts from Malaysian selected plants on CD18/11 a expression and phagocytosis activity of leukocytes using flow cytometry analysis.Methods:The effects of methanolic extracts on CD18/11 a expression and phagocytosis of leukocytes were measured by labelling the cells with CD18-fluorescein isolhiocyanaie and ingestion labelled with Escherichia coli-fluorescein isothiocyanate and then analyzed using flow cytometer.Results:About 12 out of 20 methanolic extracts of selected Malaysian medicinal plants significantly(P≤0.05) inhibited the CD18/1 la expression of leukocytes at both concentrations of 6.25 μg/mL and 100 μg/mL in dose dependent manner.The most active inhibitory was shown in Citrus aurantifolia(Christm.) Swingle and Alpinia galangal(L.) Willd.at dosage 100ug/mL.Moreover,the Orthosiphon aristatus(Blume) Miq(O.aristatus).showed the highest stimulatory activity at the concentration of 100 μg/mL.Other than that,four plant extracts significantly(P<0.05) rose the phagocytosis activities of leukocytes in dose dependent manner.However,Annona muricata L.and O.aristatus showed the highest stimulated activities at the 100 pg/mL concentration.Conclusions:The results suggest that methanolic extracts of Cirrus aurantifolia.Alpinia gaiangal,O.aristatus and Annona muricata are able to modulate innate immune system and can potentially be recognized as therapeutic agents for modulating immune system. 展开更多
关键词 SELECTED MALAYSIAN medicinal plantS Immunomodulatory effects CD18/11a EXPRESSION PHAGOCYTOSIS activity Flow cytometry analysis
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Effects of plant latex based anti-termite formulations on Indian white termite <i>Odontotermes obesus</i>(Isoptera: Odontotermitidae) in sub-tropical high infestation areas
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作者 Ravi Kant Upadhyay 《Open Journal of Animal Sciences》 2013年第4期281-294,共14页
In the present investigation various bioassays were conducted to evaluate the anti-termite efficacy of plant latex based formulations to control population of Indian white termite in subtropical soil. Results reveal t... In the present investigation various bioassays were conducted to evaluate the anti-termite efficacy of plant latex based formulations to control population of Indian white termite in subtropical soil. Results reveal that crude latex, its fractions and combinatorial fractions have shown very high toxicity against O. obesus. The LD50 values for different latex fractions of 24 h were in a range of 5.0-17.613 μg/mg while combined mixtures of Calotropis procera have shown synergistic activity against termites and caused comparably high mortality with LD50 1.987-6.016 μg/mg. The mortality rate was found dose and time dependent as it was found to be increased with an increase in dose and exposure period. In olfactometry tests, C. procera latex solvent fractions have shown significant repellency at a very low dose 0.010-0.320 μg/mg. Interestingly, solvent fractions have significantly repelled large numbers of worker termites due to volatile action of active components of latex and different additives. ED50 values obtained in crude latex were 0.121 μg/mg body weights while combinatorial formulations have shown ED50 in between 0.015-0.036 μg/mg. Statistical analysis of repelled and un-repelled termites gave a low Chi-square value (X2 value = 0.890) which is an indicator of independence of repellent action in randomly selected termite groups. In field experiments pre-soaked cotton threads impregnated with Calotropis procera crude latex were tagged around tree trunks of Tectona grandis provided a wider protection against O. obesus. By employing these pre-coated threads, termite infestation and tunneling activity were significantly decreased (p Calotropis procera possesses enough anti-termite potential against Indian white termite, O. obesus population. If used these, formulations may also provide wide a range of control against other kinds of pests including house hold, medical and veterinary. However, Calotropis procera latex based formulations can be recommended for effective control of termites in high infestation areas by applying spray, or in form of poison baits or as fumigant in pure form. 展开更多
关键词 Calotropis procera Odontotermes obesus plant LATEX Toxic effectS
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The effect of dehydration on plant regeneration and some physiology characters in rice calli 被引量:1
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作者 ZHAO Chengzhang WU Lianbin YANG Changdeng QI Xiufang CNRRI,Hangzhou 310006,China 《Chinese Rice Research Newsletter》 1997年第2期7-8,共2页
The plant regeneration frequencies of ealli fromplant tissue and cell culture,especially that of thecalli from rice tissue culture and rice anther cul-ture,and that of the foreign-DNA-transfor-mation-derived rice call... The plant regeneration frequencies of ealli fromplant tissue and cell culture,especially that of thecalli from rice tissue culture and rice anther cul-ture,and that of the foreign-DNA-transfor-mation-derived rice calli is very low(usually 10-15%).It is therefor very important to improve theplant regeneration frequency of rice calli.A1- 展开更多
关键词 The effect of dehydration on plant regeneration and some physiology characters in rice calli
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Stability and Ecological Effects of Main Plant Communities in Minqin Desert Area
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作者 Chang Zhaofeng Duan Xiaofeng +3 位作者 Han Fugui Zhong Shengnian Wang Qiangqiang Zhang Jianhui 《Animal Husbandry and Feed Science》 CAS 2015年第3期191-196,共6页
[ Objective ] To elucidate the change trend in stability and ecological effects of plant communities in desert along with global wanning. [ Method ] The data of site-specific observation on five main plant communities... [ Objective ] To elucidate the change trend in stability and ecological effects of plant communities in desert along with global wanning. [ Method ] The data of site-specific observation on five main plant communities at ten plots in Minqin desert area were used to analyze the stability and ecological effects of desert plant communities by using two indicators vegetation coverage and projective cover degree. [ Results ] The vegetation coverage of Artemisia arenaria and Ephedra przewalskii, and the projective cover degree of A. arenaria and man-made Haloxylon ammodendron forest decreased remarkably; and the vegetation coverage of Ni- traria tangutorum was also decreased to some extent. [ Conduslon] (1) The plant communities with poor vegetation coverage gives a relatively strong stability, while that with high vegetation coverage has a relatively poor stability; (2) the yearly precipitation is the determinant of vegetation coverage and projective cover deglee; (3) the ecological function is found to be most remarkable in per unit area N. tangutorum, followed by E. przewalskii and N. tangutorum +H. ammodendron, and least in per unit area A. Arenaria. The vegetation is sparse in desert and plant branches does not distribute regularly, thus the crown-based vegetation coverage can not reflect the actual surface coverage. 展开更多
关键词 plant communities STABILITY Ecological effects Minqin desert area
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Lack of Evidence for Local Adaptation of the Endangered Karner Blue Butterfly to Its Sole Larval Hostplant—The Wild Lupine
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作者 Kevin Handel Maria Gabriela Bidart 《Advances in Entomology》 2023年第3期172-187,共16页
Local adaptation is an important process that drives the evolution of populations within species, and it can be generally expressed by the higher fitness of individuals raised in their native habitats versus in a fore... Local adaptation is an important process that drives the evolution of populations within species, and it can be generally expressed by the higher fitness of individuals raised in their native habitats versus in a foreign location. The influence of local adaptation is especially prominent in species that subsist in small and/or highly isolated populations. This study evaluated whether the federally endangered Karner blue butterfly, Lycaeides melissa samuelis (Lepidoptera: Lycaenidae) is locally adapted to its exclusive larval host plant, the wild lupine (Lupinus perennis). To test for local adaptation, individuals from a laboratory-raised colony were reared on wild lupine plants from populations belonging to either their native (Indiana) or a foreign (Michigan and Wisconsin) region. For this purpose, lupine plants from the different populations were grown in a common garden in growth chambers, and one Karner blue larva was placed on each plant. Fitness traits related to growth and development were recorded for each butterfly across populations. Days from hatching to pupation and eclosion showed gender-specific significant differences across wild lupine populations and plant genotypes (within populations). The percent survival of butterflies (from hatching to eclosion) also differed among plants from different populations. These results indicate that wild lupine sources can affect some developmental traits of Karner blue butterflies. However, growth-related traits, such as pupal and adult weight of individuals reared in plants from native populations did not differ from those of foreign regions. The apparent absence of local adaptation to wild lupine suggests that, at least, some individuals of this species could be translocated from native populations to foreign reintroduction sites without experiencing decreased fitness levels. However, future studies including more populations across the geographical range of this butterfly are recommended to evaluate other environmental factors that could influence adaptation on a wider spatial scale. 展开更多
关键词 Local Adaptation Karner Blue Butterfly Wild Lupine Butterfly Fitness-Related Responses plant Genotypic effects
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Speed up the Retrofit of Thermal Power Generating Units, Raise the Effectiveness of Power Plant Comprehensively
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作者 Jiang Zhesheng 《Electricity》 2000年第1期13-16,共4页
关键词 Speed up the Retrofit of Thermal Power Generating Units Raise the effectiveness of Power plant Comprehensively
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垂穗披碱草根际促生菌的分离鉴定及促生作用研究 被引量:1
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作者 任智慧 于乔 +5 位作者 高士孔 王家驹 牛德鹏 刘美丽 呼天明 付娟娟 《草地学报》 CAS CSCD 北大核心 2024年第6期1693-1701,共9页
优良的根际生长促生菌(Plant growth-promoting rhizobacteria, PGPR)是生产优质微生物菌肥的重要物质基础。本研究以广布于青藏高原的垂穗披碱草(Campeiostachys nutans Griseb.)为材料,采用平板划线法分离其PGPR,探究菌株的促生特性,... 优良的根际生长促生菌(Plant growth-promoting rhizobacteria, PGPR)是生产优质微生物菌肥的重要物质基础。本研究以广布于青藏高原的垂穗披碱草(Campeiostachys nutans Griseb.)为材料,采用平板划线法分离其PGPR,探究菌株的促生特性,通过16S测序确定菌株的分类地位,并进行盆栽试验验证PGPR的促生效果。结果表明,从垂穗披碱草根际土筛选出14株促生特性优良的PGPR,其中,有11株兼具产IAA,ACC脱氨酶以及铁载体的能力。经16S rDNA鉴定,以假单胞菌属为优势菌属,6株属于假单胞菌属(Pseudomonas),2株属于芽孢杆菌属(Bacillus),2株属于葡萄球菌属(Staphylococcus),其他四株分别属于类节杆菌属(Paenarthrobacter)、微杆菌属(Microbacterium)、不动杆菌属(Acinetobacter)和考克氏菌属(Kocuria)。盆栽试验表明,接种14株菌株对多年生黑麦草具有良好的促生效果,并能够提高其光合效率。研究结果丰富了植物根际促生菌菌种资源库,为实现农业“绿色增产”提供优质菌肥种质资源。 展开更多
关键词 青藏高原 垂穗披碱草 根际促生菌 分离筛选 促生作用
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Effect of CRMS on male sterility of rice plant
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作者 WANG Xi YU Meiyu YAO Fude CNRRI Hangzhou 310006,China 《Chinese Rice Research Newsletter》 1995年第2期2-4,共3页
The experiments were carried out in paddy field of CNRRI in 1985-1989. Seedlings of the indica variety Erjiufeng were raised in a seedbed and transplanted to pots with area of 0.1 m~2 at seedling age of 30 d. Treatmen... The experiments were carried out in paddy field of CNRRI in 1985-1989. Seedlings of the indica variety Erjiufeng were raised in a seedbed and transplanted to pots with area of 0.1 m~2 at seedling age of 30 d. Treatments with (CRMS) were conducted at different stages: pistil and stigma primordium formation 展开更多
关键词 CRMS effect of CRMS on male sterility of rice plant
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Valuing Health Effects of Natural Radionuclides Releases from Yatagan Power Plant
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作者 Tayfun BUKE Aylin CiGdem KONE 《Energy and Power Engineering》 2010年第1期46-52,共7页
The objective of this paper is the valuation of radiological health effects of Yatagan Power Plant. To this aim the radiation dose calculations are carried out for the population living within 80 km radius of the plan... The objective of this paper is the valuation of radiological health effects of Yatagan Power Plant. To this aim the radiation dose calculations are carried out for the population living within 80 km radius of the plant. The average of the maximum measured specific isotopes 238U, 232Th and 226Ra in the flying ash samples are considered as radioactive sources. Based on the dose calculations, first the stochastic health effects and then monetary health effects are estimated. The estimated total collective dose and economic value of the pre-dicted health effects are 0.3098 man Sv/y and 14791 US$/y respectively. The results obtained from the dose calculations are lower than the limits of International Commission of Radiation Protection (ICRP) and it does not pose any risk for public health. Monetary value of health risks is also negligible in comparison to the av-erage yearly sales revenue of the plant which is 250 million US$. 展开更多
关键词 coal-fired power plants COLLECTIVE DOSE ATMOSPHERIC DISPERSION VALUING health effects
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棉隆土壤消毒联合种植密度防除油菜田杂草及对作物产量和田间光照的影响
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作者 朱文达 颜冬冬 +2 位作者 刘晓洪 李林 曹坳程 《植物保护》 CAS CSCD 北大核心 2024年第2期361-365,共5页
在农田杂草的治理中,结合农艺措施来治理草害的发生,可有效减少化学除草剂的使用,实现草害的综合治理。本文采用田间试验研究了棉隆土壤消毒联合油菜不同种植密度对油菜田主要杂草野燕麦Avena fatua、苦苣菜Sonchus oleraceus的防除效果... 在农田杂草的治理中,结合农艺措施来治理草害的发生,可有效减少化学除草剂的使用,实现草害的综合治理。本文采用田间试验研究了棉隆土壤消毒联合油菜不同种植密度对油菜田主要杂草野燕麦Avena fatua、苦苣菜Sonchus oleraceus的防除效果,及杂草对氮、磷、钾及水分消耗的影响。结果表明,土壤消毒联合种植密度对油菜田杂草防除效果显著,对野燕麦、苦苣菜均有良好防效,总鲜重防效达到89.8%~100.0%。采取防除措施后,杂草对田间氮、磷、钾和水分的消耗量减少85%以上,有效改善了田间的水肥和光照条件。土壤消毒联合种植密度不同处理的油菜籽产量达到3155.0~4920.5 kg/hm^(2),增产效果显著,产量较未消毒土壤区增加13.3%~76.8%,增收1857.3~10684.8元/hm^(2)。研究表明采用土壤消毒结合种植密度对油菜田杂草具有很好的控制效果,适度增加油菜种植密度既能保证对杂草防效,同时也能保证产量。 展开更多
关键词 棉隆 种植密度 杂草防效 养分 油菜籽产量
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