Combining Ability Analysis for Grain Improvement in Linseed (Linum usitatissimum L.) | Chapter 05 | Emerging Issues in Science and Technology Vol. 1
Eight diverse parents of linseed (Linum
usitatissimum L.) were used in diallel mating design (excluding reciprocal) to
generate twenty eight crosses and evaluated against Shekhar as check in
randomized block design for nine quantitative traits. General combining ability
(GCA) of the parents and specific combining ability (SCA) of crosses were
estimated for development of high yielding varieties. Analysis of variance
revealed that the genotypes differed genetically from each others for all the
nine characters studied. Combining ability analysis revealed that mean square
due to GCA and SCA for days to 50% flowering, days to 50% maturity, plant
height, number of primary branch, number seeds per capsules, oil percent and
grain yield were significant. Genetic component of variances depicted that
additive genetic variance were higher than non-additive genetic variance for
plant height, number of capsules per plant and oil percent. Whereas,
non-additive genetic variance was higher for rest of the characters studied.
SLS72 was found to be good general combiner for grain yield and its attributing
traits viz. Oil percent, number of capsules per plant, shorter plant height and
early flowering. Crosses PKDL71 x LCK7035, NL260 x SLS72, NL260 x Shekhar,
RL26018 x Shekhar, LCK7035 x BAU-06-05 and RL26018 x LCK7035 showed higher
positive significant SCA effects for grain yield per plant.
Author(s) Details
Dr. Ram Balak Prasad Nirala
Department of Plant Breeding
and Genetics, Bihar Agricultural University, Sabour, Bhagalpur, India.
Ms Neha Rani
Department of Plant Breeding
and Genetics, Bihar Agricultural University, Sabour, Bhagalpur, India.
Dr. Awadhesh Kumar Pal
Department of Plant
Physiology and Biochemistry, Bihar Agricultural University, Sabour, Bhagalpur,
India.
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