Estimation of genetic diversity for CLCuV, earliness and fiber quality traits using various statistical procedures in different crosses of Gossypium hirsutum L
Автор: Nazir Amna, Farooq Jehanzeb, Mahmood Abid, Shahid Muhammad, Riaz Muhammad
Журнал: Вестник аграрной науки @vestnikogau
Статья в выпуске: 4 (43), 2013 года.
Бесплатный доступ
In the current studies 70 crosses made among different genotypes were evaluated for CLCuV tolerance, better fiber quality and earliness related traits. For evaluation of these traits cluster, PC and correlation analysis was employed to obtain suitable parents and crosses that can be exploited in future breeding programmes. The earliness related traits had positive and significant association among them and days to 1 st boll opening showed its positive association with CLCuV%. Only negative and significant association was found between GOT% and staple length. Principal component (PC) analysis showed first 3 PCs having Eigen value >1 explaining 64.1of the total variation with days to 1 st square and flower were the most important traits in PC1. Cluster analysis classified 70 crosses into four divergent groups. The genotypes in cluster 1 & 3 comprised of genotypes with less attack of CLCuV%, better GOT% along with better fiber quality. The cluster 2 and 4 comprised of some crosses having fair tolerance against CLCuV% and very good GOT% along with low micronaire values. The crosses in cluster 2 and 3 also exhibited desirable values of earliness related traits. The results concluded that the diversity among the genotypes could be utilized for cultivar breeding and germplasm conservation programs aimed at improving CLCuV% tolerance with better fiber quality.
Cotton, correlation, clcuv, earliness, fiber quality, principle component analysis
Короткий адрес: https://sciup.org/147124092
IDR: 147124092
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