【摘要】 应用隶属函数值法 ,以相对含水量、相对电解质外渗率、叶伸展速率、干物质胁迫指数、相对存活率及成穗率胁迫指数和籽粒产量胁迫指数等为指标 ,对小麦的抗盐性进行了评价。苗期生长生理性状指标的隶属度综合值 (∑X(u) )与均值 (X—(u) )综合评价表明 ,本试验中小麦抗盐性为 :植申 2号 >鲁麦 1 9>浙麦 >扬麦 1 5 8>鲁麦 2 3。产量性状胁迫指数的隶属度综合值 (∑X(u) )与均值 (X—(u) )综合评价表明 ,小麦抗盐性 :鲁麦 1 9>植申 2号 >浙麦>扬麦 1 5 8>鲁麦 2 3。本文还对产量性状胁迫指数与生长生理性状的隶属度进行了相关分析。更多还原

【Abstract】 Responses of five wheat varieties to increasing soil salinity were determined through pot culture experiment.Subordinate function value method (SFVM) was adopted in this paper to evaluate salt resistance of five wheat varieties comprehensively. Relative water content (RWC),relative electrolyte leakage percentage (RELP),leaf expansion rate (LER),dry matter stress index (DMSI),relative survival percentage (RSP),spike formation percentage stress index (SFPSI) and grain yield stress index (GYSI) were introduced as the indexes of evaluation.The results of comprehensive evaluation by means of the subordinate degree comprehensive value of growth and physiological characters and stress indexes of yield characters and their average value showed that "Zhishen No.2"and "Lumai No.19" were of the highest subordinate degree comprehensive value (∑ X ( u ) ) and the largest average value ( X - ( u ) ) of these indexes among five wheat varieties under extreme soil salinity,whereas "Lumai No.23" was of the smallest.It meant that"Zhishen No.2" and "Lumai No.19" were of stronger ability of salt resistance, whereas "Lumai No.23" was of less ability relatively.The statistics also showed that there was positive correlation between the stress indexes of yield characters and subordinate degree of growth and physiological characters.更多还原