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本文总结了1980—1985年间测定的陆地棉纤维长度、整齐度、纤维细度、纤维捻曲度、纤维强度、断裂长度等主要纤维品质性状的广、狭义遗传力(h_B~2·h~2)和显性度(H/D)~(1/2)的估值;结果显示这些性状大多具有中、低等遗传力,广狭义遗传力估值差异不大;这些性状的显性度,除纤维细度在6次测定中有1次达到1.55、断裂长度在1次测定中达到1.01以外,其余都在1.00以下,表明这几种性状大多属于部分显性,杂种优势不强。本文还对在估算遗传力估值中产生的偏倚进行了讨论,对在估算遗传参数中增加样本数和加强地区之间的协作,提出了建议。
This paper summarizes the broad and narrow heritability (h_B ~ 2 · h ~ 2) of major fiber quality traits such as fiber length, uniformity, fiber fineness, fiber twist, fiber strength and breaking length measured from 1980 to 1985 ) And dominant (H / D) ~ (1/2), respectively. The results showed that most of these traits had medium and low heritability, and the values of heritability were not significantly different. The dominant, In addition to the fiber fineness in a determination of six times to reach 1.55, the length of the rupture in a test to reach 1.01, the rest are below 1.00, indicating that most of these traits are part dominant, heterosis is not strong. The article also discusses biases in estimating heritability estimates, and provides recommendations for increasing the number of samples in estimating genetic parameters and for enhancing regional collaboration.