Estimation of Gene Interaction for Grain Yield and Yield Traits in Rabi Sorghum [Sorghum bicolor (L.) Moench]
Lokesh Kumar Verma
Department of Genetics and Plant Breeding, UAS, Dharwad, Karnataka, India.
B. D. Biradar
Department of Genetics and Plant Breeding, UAS, Dharwad, Karnataka, India.
Ayyanna
Department of Genetics and Plant Breeding, UAS, Dharwad, Karnataka, India.
P. Kariyannanavar *
Department of Genetics and Plant Breeding, UAS, Dharwad, Karnataka, India.
P. Rakshith
University of Agriculture Sciences, Raichur, Karnataka, India.
Anusha
Indian Institute of Horticulture Sciences, Bangalore, Karnataka, India.
R. S. Prajwal
Department of Genetics and Plant Breeding, UAS, Dharwad, Karnataka, India.
*Author to whom correspondence should be addressed.
Abstract
Generation mean analysis is the potent tool to provide information about different types of gene actions and interactions. To determine the inheritance pattern and gene action of 10 grain yield and grain related quantitative traits, six generations of the four cross combinations viz., BJV44 × DSMR8, BJV44 × DSMR4, PKV Kranti × DSMR8 and PKV Kranti × DSMR4 were studied employing generation mean analysis during rabi of 2020. Interestingly, both additive and dominant gene action were prevalent for all the traits in the cross BJV44 × DSMR8, whereas the other three crosses exhibited additive for some traits and dominant gene action for some traits. Most of the traits in the majority of the crosses displayed the duplicate type of gene interaction and realized their suitability for the population improvement program. Some crosses viz., BJV44 × DSMR4 and PKV Kranti × DSMR4 exhibited complementary gene interaction and were found suitable for heterosis breeding for grain yield/plant.
Keywords: Sorghum, grain size, grain yield, genetic interaction, generation mean analysis
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References
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