Author(s):

Delvadiya IR, Korat KM, Dobariya KL and Barad HR

Abstract: Five generations (P₁, P₂, F₁, F₂ and F₃) of four crosses of castor were used for estimation of genetic parameter for seed yield and its related eleven traits days to flowering of main raceme, days to maturity of main raceme, plant height up to main raceme (cm), number of nodes up to main raceme, length of main raceme (cm), effective length of main raceme (cm), number of effective branches per plant, number of capsules on main raceme, shelling out turn (%), 100-seed weight (g) and oil content (%). Both additive and dominance gene actions were involved in the inheritance of number of nodes up to main raceme in the cross JP 100 x SKI 215 and number of effective branches per plant in the cross JP 96 x JI 355. Whereas, only dominance gene effect was prevailing in the inheritance of days to flowering of main raceme in the cross JP 100 x JI 362. Additive x additive (i) and dominance x dominance (l) gene actions were important for days to flowering of main raceme in cross JP 96 x JI 355; seed yield per plant in the cross JP 100 x SKI 215; days to maturity of main raceme, plant height up to main raceme, number of nodes up to main raceme, length of main raceme, effective length of main raceme and seed yield per plants in the cross JP 100 x JI 362; number of capsules on main raceme in the cross JP 100 x JI 363 and for shelling out turn in all the four crosses. In view of the importance of both additive and non-additive gene effects a biparental mating and reciprocal recurrent selection may be utilized for genetic improvement of the seed yield and related in castor.

Pages: 330-332  |  783 Views  211 Downloads

Download (520KB)