作物学报Issue(6)：963-971,9.DOI:10.3724/SP.J.1006.2015.00963
普通菜豆品种苗期抗旱性鉴定
Identification of Drought Resistence at Seedlings Stage in Common Bean (Phaseolus vulgaris L.) Varieties
摘要
Abstract
Eleven physiological indices of different common bean varieties were measured under the conditions of irrigation and repeated drought in pot, drought resistance evaluation indices at seedling stage were selected by using grey relational theory, the drought resistance of each germplasm was comprehensively evaluated according to weighted drought-resistance index and drought-resistance measuration value (D-value) and graded by fuzzy cluster analysis. The results showed that the association de-gree between different indices and comprehensive drought resistance indices was ranked as follows: leaf relative water content (0.7726), Fv/Fm(0.7607), chlorophyll content (0.7435), survival rate (0.7341), biomass (0.7329), shoot dry weight (0.7314), root dry weight (0.7192), stomatal conductance (0.7159), root/shoot ratio (0.7092), plant height (0.7086), leaf area (0.6910). The evaluation results based on weighted drought-resistance index andD-value had some differences, but the drought resistance rank was essentially the same. According toD-value, tested materials were divided into four groups including high resistance (10%), moderate resistance (6%), susceptible (58%) and highly susceptible (26%). In conclusion, ten indices including leaf relative water content,Fv/Fm, chlorophyll content and so on can be used to evaluate the drought resistance at seedling stage in common bean; combining weighted drought-resistance index andD-value can improve the reliability of identification results. Among the 50 tested varieties, Baijindelidou, Yuejindou, Tuzitui, Yuanbaicaidou and 260205 have the better drought resistance.关键词
普通菜豆/抗旱性/灰色关联度分析/模糊聚类分析/综合评价Key words
Common bean/Drought resistance/Grey relational analysis/Fuzzy cluster analysis/Comprehensive evaluation引用本文复制引用
李龙,王兰芬,武晶,景蕊莲,王述民..普通菜豆品种苗期抗旱性鉴定[J].作物学报,2015,(6):963-971,9.基金项目
本研究由中国农业科学院科技创新工程和国家现代农业产业技术体系建设专项(CARS-09)资助。 （CARS-09）
