摘要
按照作物生理学的观点,一个小麦品种的光合生产力和收获指数(HI)越高,籽粒产量也越高。光合生产力则决定于光合器官的性质——大小、寿命和光合效率。作物生理学以叶面积持续期(LAD)和净同化率(NAR)作为光合生产力的指标,其意义是:LAD:是叶面积对时间的积分。NAR:是单位叶面积在单位时间内的干物质净积累。
Seven wheat cultivars and their 3×4 partial diallel crosses were grown for two seasons(1979—1981)to study the inheritance of harvest index(HI)and several other physiological characteristics after anthesis The results of study showed that the genetic variance of leaf area duration(LAD),mean net assimilation ratio(NAR)and grain filling index(FI)was controlled nainly by additive effect.The degree of dominance of HI was high.The estimates of narrow sense heritability were 61.56—69.25%for LAD,45.59—60.55%for NAR.28.50—41.34 for FI and 29.25—65.87%for HI.These results indicate that their genetic improvement should be effective.
作者
任正隆
李尧权
Ren Zhenglong;Li Yaoquan(Sichuan Agricultural College,Yaan,Sichuan Province)
出处
《中国农业科学》
1984年第2期29-33,共5页
Scientia Agricultura Sinica
