江淮下游地区大豆地方品种几个生理性状遗传变异的初步研究

本研究对江淮下游地区夏火豆地方品种11个与干物质生产和分配有关的生理性状的遗传变异进行试验分析。结果表明:在本地区大豆地方品种自然群体,所研究的生理性状中均有丰富的遗传变异。分析估计了各个性状的遗传力和选择响应以及与小区产量的相关,得出:生物产量和叶面积相对生长率可作系统选择的辅助指标,其两年平均相关选择效率分别是对产量直接选择的77％和59％。

PRELIMINARY STUDY ON SOME PHYSIOLOGICAL CHARACTERS OF LOCAL SOYBEAN VARIETIES IN LOWER YANGTZE AND HUAI VALLEYS

The objective of this paper was to study the genetic variability of eleven physiological characters including chlorophyll content(CC), specific leaf weight(SLW), fresh leaf weight (FLW), leaf area index (LAI), leaf relative growth rate (LRGR), crop growth rate (CGR), relative growth rate (RGR), net assimilate rate (NAR), leaf area ratio (LAR), biological yield (Ybiol), and harvest index (HI) related to the forming and distribution of photosynthate. The estimates of genotypie variance, genotypic coefficient of variation, heritability, expected genetic advance and correlation with yield were calculated. The results indicated that the genetic resources of the physiological characters of these local varieties are abundant and that some physiologieal characters such as biological yield, leaf relative growth rate might be the useful characters for indirect selection of soybean yield.