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Genetic variability for yield and fiber related traits in genetically modified cotton

Journal of Cotton Research 2021年第3期4卷 219-228页

作者： SAHAR Adeela ZAFAR Muhammad Mubashar RAZZAQ Abdul MANAN Abdul HAROON Muhammad SAJID Sunaina REHMAN Abdul MO Huijuan ASHRAF Muhammad REN Maozhi SHAKEEL Amir YUAN Youlu Department of Plant Breeding and Genetics University of AgricultureFaisalabadPakistan Institute of Cotton Research Chinese Academy of Agricultural SciencesAnyang 455000China Institute of Molecular Biology and Biotechnology The University of Lahore-PakistanLahorePakistan National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhanChina Zhengzhou Research Base State Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhouChina.

Background:Cotton(Gossypium hirsutum L.)is grown for fiber and oil purposes in tropical and sub-tropical areas of the *** is the 4th largest producer of *** has a significant contribution in the GDP of ***,the present study was performed to assess the genetic variations and genetic diversity of yield and fiber quality traits in cotton and to analyze the associations present among ***:Analysis of variance exhibited significant variation for all studied traits except total number of nodes and the height to node *** phenotypic coefficient of variation was higher than the genotypic coefficient of variation for all studied *** height,monopodial branches,total number of bolls,lint index,seed index,and seed cotton yield displayed high heritabilities in a broad sense with maximum genetic *** analysis revealed that seed cotton yield had a significant positive association with plant height,the nu mber of monopodial branches,the nu mber of sympodia I branches,ginning outturn(GOT),the number of bolls,seed per boll,seed index,uniformity index,the number of sympodial branches,reflectance,and seed index at the genotypic level while a significant positive relationship was observed with plant height,the number of sympodial branches,boll number,and *** height,monopodial branches,GOT,boll weight,seeds per boll,and short fiber index exerted direct positive effects on seed cotton *** first 6 principal component analysis(PCs)out of the total fourteen PCs displayed eigenvalues(>1)and had maximum share to total variability(82.79%).The attributes that had maximum share to total divergence in eluded plant height,uniformity index,the nu mber of sympodial branches,seed per boll,GOT,seed cotton yield,and short fiber ***:The genotype AA-802,IUB-13,FH-159,FH-458,and CIM-595 were genetically diverse for most of the yield and fiber quality traits and could be utilized for the selection of better perform

关键词： Upland cotton fiber trait Cotton yield Genetic variability Yield components

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