ASSOCIATION AND DIVERGENCE STUDIES FOR YIELD AND ITS ATTRIBUTING TRAITS IN UPLAND COTTON
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Authors
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RANI CHAPARA
Department of Genetics and Plant Breeding, Regional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Lam, Guntur - 522 034
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K.V. SIVA REDDY
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M. SUDHA RANI
Department of Genetics and Plant Breeding, Regional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Lam, Guntur - 522 034
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K. SUDHAMANI
Department of Genetics and Plant Breeding, Regional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Lam, Guntur - 522 034
Keywords:
Correlation, D2 analysis, Principal Component Analysis, Upland CottonAbstract
The study was executed during Kharif, 2022 to evaluate the character association and genetic
variability of yield and its associated traits in cotton. Correlation studies revealed that seed cotton
yield exhibited a substantial positive kinship with the number of bolls per plant, the number of sympodial
branches per plant, seed index, ginning out turn (GOT), and lint yield.The first three principal
components (PCs) out of the 12 PCs displayed eigen values more than one and exhibited maximum
share to total variability. The attributes that contributed a maximum portion to the total divergence
included the number of sympodia per plant, lint yield, seed cotton yield, ginning outturn percent, and
number of bolls per plant. The traits, number of bolls per plant, number of sympodia per plant, seed
index, ginning out turn, and lint yield can be utilized for direct selection for further heterosis breeding.
Based on D2 analysis the lines, L 2251 and L 2252 were found divergent and may be used in further
heterosis breeding programs.
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