Author(s):

HB Virani, RB Madariya, A Panera and NM Bhut

Abstract: The P₁, P₂, F₁, F₂, BC₁ and BC₂ of five castor crosses viz., JM-6 x 48-1, JI-433 x SKI-346, JI-436 x PCS-124, SKI-346 x JI-35 and SKI-346 x SKI-215 were studied for twelve metric traits. The scaling tests revealed the importance of additive-dominance model for number of nodes up to primary raceme in JI-436 x PCS-124. The result of rest of the cases depicted the epistatic digenic model including all types of interactions played a major role for the entire cross combinations. The study revealed the importance of additive and non-additive type of gene action for all the characters studied suggesting the use of reciprocal recurrent selection or biparental mating for improving the characters in castor. Duplicate type epistasis played a greater role than complementary epistasis in most of the cases.

Pages: 2705-2708  |  650 Views  206 Downloads

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