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Asian Journal of Plant Sciences
Year: 2007  |  Volume: 6  |  Issue: 1  |  Page No.: 122 - 128

Genetic Variability and Association Analysis in Three Different Morphological Groups of Cotton (Gossypium hirsutum L.)

S. Preetha and T.S. Raveendran    

Abstract: Genetic variability, correlations and path coefficients were studied in three different morphological groups viz., robust, semi-compact and compact types of Gossypium hirsutum. A combination of high heritability and genetic advance was noticed for characters plant height, internode length, number of sympodia, length of sympodia, number of flower bearing nodes, number of bolls, boll weight, seed cotton yield, micronaire, elongation percentage, specific leaf area, specific leaf weight, leaf area index and root length showing that they will respond to selection. Correlation and path analysis revealed that number of bolls per plant and boll weight were the important yield components in all the three groups while pre-flowering duration and internode length in semicompact types and specific leaf area in compact accessions also contributed to yield and formed the critical characters for cotton improvement.

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