Heterosis and combining ability in groundnut (arachis hypogaea L.)

Verma, H. and Ranwah, B.R. (2012) Heterosis and combining ability in groundnut (arachis hypogaea L.). Journal of Progressive Agriculture, 3 (2). pp. 10-12.

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Abstract

Fifty-three genotypes of groundnut including twelve lines, three testers, thirty-six crosses, and two checks were evaluated in randomized block design with three replications at two environments. Analysis of variance indicated significant difference among parents and among crosses for all characters in both the environments except primary branches in E2. Significant positive heterosis was recorded in nine and eight crosses for pod yield per plant in E1 and E2 respectively. Seven crosses exhibited economic heterosis for one or other characters viz., JAL-17 x GG-2 (4), JAL-43 x GG-2 (2), UG-5 x ICGS-37(2), UG-5 x GG-2 (2), UG-17 x GG-2 (1), UG-16 x GG-7 (1) and UG-13 x GG-2 (1) and frequency was higher in E1 than E2. The parents UG-5, UG-10, UG-11, JAL-17 and GG-7 were good general combiner and crosses JAL-17 x GG-2, UG-14 x GG-7 and UG-16 x GG-7 were best specific combiner for pod yield per plant and maximum number of characters in both the environments. Although the economic heterotic cross UG-5 x GG-2 involved both parents and UG-16 x GG-7 cross involved at least one good general combiner parents. But non-significant SCA effects were identified for selection of transgressive segregants in F2 generation with expected that heterosis in these crosses were due to accumulation of desirable alleles.

Item Type: Article
Additional Information: The Authors wish to record their gratitude to Department of Plant Breeding & Genetics, Rajasthan College of Agriculture, MPUAT, Udaipur-313001
Uncontrolled Keywords: Combining Ability, Environment, Genetic effects, Groundnut and Heterosis.
Author Affiliation: Ph.D Scholar, Department of Plant Breeding & Genetics, Rajasthan College of Agriculture, MPUAT, Udaipur-313001
Subjects: Crop Improvement > Genetics/Genomics
Crop Improvement > Plant Breeding
Divisions: Groundnut
Depositing User: Mr Balakrishna Garadasu
Date Deposited: 12 Feb 2013 07:37
Last Modified: 12 Feb 2013 07:37
URI: http://eprints.icrisat.ac.in/id/eprint/9606

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