tailieunhanh - Selection parameters for improving the seed cotton yield and fibre quality traits in American cotton (Gossypium hirsutum L.)

Hence this present study was planned to assess the genetic variability, correlation and path analysis for various yield and fibre quality characters in a set of genotypes. | 2020 9 10 1333-1342 International Journal of Current Microbiology and Applied Sciences ISSN 2319-7706 Volume 9 Number 10 2020 Journal homepage http Original Research Article https Selection Parameters for Improving the Seed Cotton Yield and Fibre Quality Traits in American Cotton Gossypium hirsutum L. M. Gnanasekaran and K. Thiyagu Tamil Nadu Agricultural University Cotton Research Station Srivilliputtur-626 135 India Corresponding author ABSTRACT Information on the effect of different yield components on improvement of yield will be crucial in any selection programme. Thirty four genotypes of American cotton Gossypium hirsutum L. were utilized to study the genetic variability and correlation of yield its components and fibre properties and data recorded were analyzed to understand the relative contribution of different yield components in enhancing the yield and fibre quality. Keywords Study revealed high heritability observed for days to first flowering days to fifty percent flowering number of monopodia per plant number of bolls per plant ginning percentage Correlation G. upper half mean length bundle strength fibre fineness uniformity index and seed cotton hirsutum yield. Number of monopodia per plant number of bolls per plant and seed cotton yield Variability Yield shows high heritability coupled with high genetic advance over mean indicating the components preponderance of additive gene action in the inheritance of these traits. Traits such as days Article Info to first flowering days to fifty percent flowering ginning percentage ginning percentage upper half mean length bundle strength and uniformity index in which high heritability Accepted accompanied by low genetic advance was recorded indicates the effect of non-additive 12 September 2020 gene action. Significant positive association of plant height number of bolls per plant boll Available Online weight and seed index was .