RK Mahawar, JM Dhakar, Sandhya, NR Koli, SC Sharma, Khajan Singh and Yamini Tak

The experiment comprised twenty eight hybrids developed from eight genotypes of linseed through diallel mating design (excluding reciprocal) along with checks were evaluated in randomized block design under early sown in normal irrigated condition with three replications for twelve distinct morphological characters, during Rabi season of 2019-20, to estimate the general combining ability (GCA) of the parents and specific combining ability (SCA) of hybrids. Significant General Combining Ability (GCA) and Specific Combining Ability (SCA) effects were noted for all the traits except GCA for number of secondary branches per plant and biological yield per plant. PA2 and RL15583 displayed positive GCA effects for seed yield per plant. Among these parents PA2 displayed positive significant GCA effect for number of primary branches per plant, test weight and harvest index and RL15583 also showed desirable significant GCA effects for days to 50% flowering, number of capsules per plant, number of seeds per capsule and harvest index. Among 28 crosses, 6 (Padmani x PA2, RL15582 x PA2, RL15583 x KBA3, RL15583 x KBA4, RL15583 x RL13161, and RL15583 x RL15582) involving at least one parent with good GCA effect for seed yield per plant and at least one component of seed yield, are expected to throw higher frequency of desirable segregants to develop high yielding linseed varieties.

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