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首页> 外文期刊>Journal of natural fibers >Inheritance Pattern of Fiber Related Traits under Normal and Hypoxia Conditions in Cotton (Gossypium Hirsutum L.)
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Inheritance Pattern of Fiber Related Traits under Normal and Hypoxia Conditions in Cotton (Gossypium Hirsutum L.)

机译：棉花正常和缺氧条件下纤维相关性状的遗传模式

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摘要

An 8 x 8 diallel crossing system was employed in F-1 generation of cotton to study the inheritance pattern of fiber related traits likemicronaire, strength and maturity under normal and hypoxia conditions. Analysis of variance revealed significant variation (P < 0.01) for all the traits under both environments. The regression coefficient b deviated significantly from zero but not from unity for all studies traits allowed further analysis of the data. The additive component (D) was significant for all the traits and more than the values of dominance components H-1 and H-2 in case of fiber strength under both conditions and for fiber uniformity under normal conditions thus showing the preponderance of additive genetic effects. For micronaire non-additive effects were predominant under both environments. Estimates of narrow sense heritability for micronaire were 38.6% under normal and 49.5% for hypoxia, 79 and 80% for fiber strength and for fiber uniformity the estimates were 79% under normal conditions and 63% under hypoxia conditions. Predominance of additive genetic effects, high heritability along with partial dominance for fiber strength under both conditions and for fiber uniformity under normal conditions is indicative of early generation selection but for micronaire under both conditions selection may be practiced in later generations.
机译：在棉花的F-1代中，采用8 x 8的二叉杂交系统研究了在正常和低氧条件下纤维相关性状的遗传模式，如马克隆值，强度和成熟度。方差分析显示两种环境下所有性状的显着差异（P <0.01）。对于所有研究特征，回归系数b均显着偏离零，但未偏离统一性，因此可以进一步分析数据。对于两种性状，添加组分（D）均具有显着性，并且在两种条件下的纤维强度以及正常条件下的纤维均匀性方面，显性组分H-1和H-2的值均高于显性组分H-1和H-2，因此显示出附加遗传效应的优势。 。对于马克隆值，在两种环境下非加性效应都是主要的。在正常条件下，马克隆虫的狭义遗传力估计为38.6％，在低氧条件下为49.5％，纤维强度为79％和80％，对于纤维均匀度，在正常条件下为79％，在低氧条件下为63％。在这两种条件下，附加遗传效应，高遗传力以及部分优势对纤维强度和正常条件下纤维均匀性的支配优势占主导地位，这表明早期选择，但两种条件下马克隆值的选择都可以在后代进行。

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