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15种柑橘砧木出苗期耐盐碱性评价 被引量:17

Evaluation of Salinity and Alkalinity Tolerances of 15 Citrus Rootstocks by in vitro Culture
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摘要 以不同盐浓度和pH值为试验因子,采用双因素正交试验设计,对15种柑橘砧木的种子进行离体培养,以种子出苗率为指标评价不同砧木的耐盐性和对pH值的适应性.结果表明:盐害是影响大多数砧木材料出苗率的最主要因素.不同种类砧木对盐碱的耐性存在着显著的差异.在15个砧木中,扁平桔表现出较强的耐盐性和对不同pH值的适应性. It is difficult to evaluate the tolerance to salinity and alkalinity stresses in field for woody plants such as citrus due to long period of growth and the difficulty in controlling the conditions. In order to pro- vide useful information for selecting rootstocks with good tolerance to salinity and alkalinity for citrus pro- duction and breeding and establish a technique rapid, highly efficient and easy to operate for salinity and al- kalinity tolerance evaluation in citrus, the in vitro culture technique was employed to assess the tolerance to salinity and alkalinity of 15 citrus rootstocks at the early stage of their growth. The frequencies of seed- ling emergence of their seeds under different NaC1 concentrations and pH values were recorded and ana- lyzed. The results showed that for most of the citrus rootstocks used in the present study, salinity was the main factor affecting seedling emergence. Significant differences were found to exist among the rootstock varieties in their tolerances to salinity and alkalinity, and Shiikuwasha (C. depressa Hayata) demonstrated much stronger tolerance to both salinity and alkalinity than the other rootstocks.
出处 《西南大学学报(自然科学版)》 CAS CSCD 北大核心 2014年第6期47-52,共6页 Journal of Southwest University(Natural Science Edition)
基金 国家科技计划(2011AA100205) 现代农业产业技术(柑橘)体系(CARS-27) 公益性行业(农业)科研专项(201203075-07)基金资助
关键词 柑橘 砧木 耐盐性 耐碱性 离体培养 citrus rootstock salinity tolerance alkalinity adaptation in vitro culture
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参考文献20

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