玉米幼苗根系对硫酸盐(Na_2^(35)SO_4)亲和性配合力的研究  

STUDY ON COMBINING ABILITY OF SULFATE UPTAKE AFFINITY FOR SEEDLING ROOTS OF MAIZE(Zea mays L.)

作　　者：冯宗云[1] 高之仁[1] 荣廷昭[1] 

机构地区：[1]四川农业大学数量遗传研究室

出　　处：《核农学报》1997年第1期54-58,共5页Journal of Nuclear Agricultural Sciences

摘　　要：本文以来源不同的９个玉米自交系及其按双列杂交组合的３６个杂交种为材料，研究了玉米幼苗根系对硫酸盐（Ｎａ２３５ＳＯ４）亲和性（Ｋｍ）的配合力。结果表明：Ｋｍ以非加性基因效应较重要，Ｋｍ与产量间有密切关系。鉴定出可供玉米育种利用的２个自交系合二和２９２及其有更广泛适应性和高产特性的３个杂交组合：５００５、５０２２、５０３０。The combining ability of sulfate uptake affinity(Km)for seedling roots of maize was studied.The data used in analysis were from an experiment involving 9 inbred lines and their 36 single crosses in a diallel mating design without reciprocals.The results showed that the mean square of specific combining ability was very significant and improtant for Km,indicating the presence of considerable amount of nonadditive gene effects in the control of sulfate uptake.There was significantly close relation between Km and yield.A further noteworthy finding in this study was the identification of two inbred lines,'Heer' and '292',which were the best overall parents for improving affinity of sulfate uptake,and three hybrids,which may have character of wide adaptation and high grain yield.

关 键 词：玉米 硫酸盐吸收 亲合性 配合力 ^35S 

分 类 号：S513.01[农业科学—作物学]