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首页> 外文期刊>Advances in Applied Agricultural Sciences >Association Analysis of Yield and Fiber Traits in Advance Pakistani Upland Cotton Cultivars (Gossypium hirsutum L.)
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Association Analysis of Yield and Fiber Traits in Advance Pakistani Upland Cotton Cultivars (Gossypium hirsutum L.)

机译：巴基斯坦陆地棉高级品种（陆地棉）的产量和纤维性状的关联分析

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摘要

The present study was conducted to estimate correlation and regression between yield and fiber characters in eight commercially grown cultivars of cotton genotypes during kharif 2012. The mean squares from analysis of variance showed that genotypes differed significantly for majority of the traits studied. This shows the presence of genetic variability for various major characters in the studied materials. The correlation coefficient (r) indicated that sympodial branches plant-1(bolls plant-1 and boll weight were significantly and positively correlated with seed cotton yield plant-1. The higher correlations coefficients of yield components with seed cotton yield also suggested that yield components can reliably be used as indirect selection criteria to improve seed cotton yield plant-1. However, negatively significant correlation was found between micronaire value and seed cotton yield plant-1, suggesting that care must be given to micronaire value while seed cotton yield is being improved. The regression coefficient (b)revealed that a unit increase in monopodial branches plant-1, sympodial branchesplant-1, bolls plant-1 and boll weight caused a substantial increase in seed cotton yieldplant-1. The coefficient of determination (r2) further suggested that larger portion oftotal variability in seed cotton yield plant-1 was attributable to traits such as sympodialbranches plant-1, bolls plant-1 and boll weight. Correlation and regression coefficientanalysis suggested that sympodial branches plant-1 and bolls plant-1 were the mostimportant yield components traits and could be exploited as selection criteria forfurther improvement of cotton genotypes.
机译：本研究的目的是估计2012年卡里夫（Krifif）期间八个基因型商业种植棉花品种的产量与纤维特性之间的相关性和回归。方差分析的均方表明，大多数研究的性状的基因型差异显着。这表明所研究材料中各种主要特征的遗传变异性。相关系数（r）表明，子叶分枝植物1（bolls plant-1和铃重）与籽棉产量plant-1呈显着正相关，产量成分与籽棉产量的相关系数越高，表明产量成分可以可靠地用作间接选择标准，以提高籽棉产量植株-1，但是，马克隆值与籽棉产量植株-1之间存在负显着相关性，这表明在籽棉产量提高时必须谨慎对待马克隆值回归系数（b）表明单足分枝植物-1，交足分枝植物-1，棉铃植物-1和棉铃重量的单位增加导致籽棉产量植物-1的大幅增加。进一步表明，籽棉产量植物1中总变异的较大部分归因于诸如dia茎植物1，棉铃nt-1和铃重。相关和回归系数分析表明，sym茎植物1和棉铃植物1是最重要的产量构成要素，可作为进一步改良棉花基因型的选择标准。

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