Journal of Pharmacognosy and Phytochemistry
Vol. 6, Issue 3 (2017)
Inbreeding depression heritability and genetic advance for yield and yield components in Indian mustard
VR Akabari, N Sasidharan and VN Kapadia
Seed yield per plant had significant and negative estimates of inbreeding depression in the crosses GM-3 x B-351, GM-2 x RH-8813 and GM-3 x RH-8813, which showed possibilities of desirable segregants in F2
population. The additive effects and gene interaction viz., dominance x dominance (l) or other type of digenic complementary gene interactions can be exploited effectively by selection. The high estimates of narrow sense heritability and expected genetic advance in most of families for most of characters. Use of reciprocal recurrent selection or bi-parental mating could be suggested for improving those characters when additive and non- additive gene effects are involved. In addition to additivity and dominance, epistatic interactions of various kinds were also observed; one or two cycles of intermating of selected segregants may be adopted to accumulate favorable genes through recurrent selection which will result in the improvement of seed yield.
Pages: 755-760 | 1300 Views 258 Downloads
VR Akabari, N Sasidharan and VN Kapadia. Inbreeding depression heritability and genetic advance for yield and yield components in Indian mustard. J Pharmacogn Phytochem 2017;6(3):755-760.