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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(12): 551-559
DOI: https://doi.org/10.20546/ijcmas.2017.612.067


Studies on Combining Ability and Heterosis for Yield and its Component Traits in Groundnut (Arachis hypogaea L.)
A.Trivikrama Reddy1, M. Reddi Sekhar2, A. Vijayabharathi3, T. Lakshmi Pathy4
G. Lakshmikantha Reddy2 and V. Jayalakshmi1
1Regional Agricultural Research Station, Nandyal - 518502, ANGRAU, Andhra Pradesh, India
2Department of Genetics and Plant Breeding, S.V. Agricultural College, Tirupati - 517502, Andhra Pradesh, India
3Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bangalore - 560065, Karnataka, India
4ICAR-Sugarcane Breeding Institute, Coimbatore, Tamil Nadu – 641007, India
*Corresponding author
Abstract:

A half diallel cross involving six parental lines and their 15 F1 crosses (without reciprocals) were evaluated for combining ability of parents for 13 characters in groundnut. Variances due to sca were greater than that of gca indicating predominance of non-additive gene action control on all the traits except days to maturity and plant height. The genotypes TCGS-29 and K-134 were found as good general combiners for kernel yield, pod yield per plant, mature pods per plant and 100-kernel weight while K-1238 was a good general combiner for shelling percentage, harvest index and percent pod set per plant, and Faizapur local for pegs per plant and pods per plant. Further, the most heterotic crosses identified in the study, involved either one or both good general combiners. Four heterotic crosses viz., K-134 × TCGS-29, TCGS-29 × K-1238, K-134 × K-1238 and TPT-4 × Local Red were emerged-out as good specific combiners for kernel yield per plant, pod yield per plant, mature pods per plant, pods per plant, pegs per plant, shelling percentage, 100-kernel weight, harvest index, percent pod set per plant and primary branches per plant. The cross combination TPT-4 × Faizapur Local was earlier to flower and mature with good sca effects. An attempt of inter-mating of selected plants in the advance generations of these five crosses is suggested to obtain transgressive segregants for pod and kernel yield in groundnut.


Keywords: Groundnut, Diallel cross, Combining ability, Heterosis.
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How to cite this article:

Trivikrama Reddy, A., M. Reddi Sekhar, A. Vijayabharathi, T. Lakshmi Pathy, G. Lakshmikantha Reddy and Jayalakshmi, V. 2017. Studies on Combining Ability and Heterosis for Yield and its Component Traits in Groundnut (Arachis hypogaea L.).Int.J.Curr.Microbiol.App.Sci. 6(12): 551-559. doi: https://doi.org/10.20546/ijcmas.2017.612.067