International Journal of Chemical Studies
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P-ISSN: 2349-8528, E-ISSN: 2321-4902   |   Impact Factor: GIF: 0.565

International Journal of Chemical Studies

Vol. 6, Issue 2 (2018)
Studies on genetic component analysis and gene action for growth, yield and yield attributing traits of pumpkin


Author(s): Vimlesh Kumar, DP Mishra, GC Yadav and Umesh Babu

Abstract: Fifteen hybrids of pumpkin developed through diallel mating (excluding reciprocals) using six parents were evaluated for three seasons with the objective to know the nature of inheritance of growth and yield attributes. The present study revealed that the both additive and dominance variance were found important in the inheritance of most of the traits, whereas dominance variance were more prominent than the additive variance in all three seasons. Average degree of dominance revealed the presence of over dominance for all traits in all three seasons (E1, E2, E3). Highly significant values of additive ( 6-2-189) and dominance (Ĥ1 and Ĥ2) effects of components were observed for most of the traits studied in all three seasons (E1, E2, E3) except the values of 6-2-189 for node number to first male flower appearance, number of primary branches per plant, polar circumference of fruit and intermodal length in all three seasons and for days to first male flower anthesis in E2, for equatorial fruit circumference in E1 and E2 which were found non-significant. In general the proportions of dominant and recessive genes in parents [6-2-1894 Ĥ1)1/2 + 6-2-189 / (46-2-189 Ĥ1)1/2- 6-2-189] were more than unity with positive6-2-189value for all the traits in all three seasons except fruit length in Y2 indicating major contribution of dominant genes.

Pages: 2695-2699  |  264 Views  6 Downloads

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How to cite this article:
Vimlesh Kumar, DP Mishra, GC Yadav, Umesh Babu. Studies on genetic component analysis and gene action for growth, yield and yield attributing traits of pumpkin. Int J Chem Stud 2018;6(2):2695-2699.
International Journal of Chemical Studies