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对典型的感赤霉病小麦品种矮秆早与典型的抗病品种苏麦3号杂交组合的F_1、F_2、B_1、B_2、P_1和P_2六世代单花接种后收获时的病小穗数深入分析发现,小麦对赤霉病的抗扩展性呈数量性状遗传。其抗性广义遗传力和狭义遗传力分别为52.57％和35.98％。可见,在对赤霉病的抗扩展性总变异中,遗传变异较环境变异大,遗传因素对抗性表现的影响是主要的,不过环境影响也较大。在总遗传方差中,加性方差(Vd=5.4388)和显性方差(Vh=
The number of spikelets at harvest of typical F_1, F_2, B_1, B_2, P_1 and P_2 single-flower blight of susceptible wheat cultivar Sumai 3 with short stalk and early maturity was in-depth The analysis found that the resistance of wheat to scab resistance was quantitative trait inheritance. The heritability of broad heritability and narrow heritability were 52.57% and 35.98% respectively. It can be seen that in the total variation of scalability against scab, the genetic variation is larger than the environmental variation, and the influence of genetic factors on the resistance is the major, but the environmental impact is also larger. Among the total genetic variance, additive variance (Vd = 5.4388) and dominant variance (Vh =