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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 6
First page : (125) Last page : (130)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7135

Overall GCA, SCA and Heterotic Status of Maize (Zea mays L.) Inbreds and Hybrids

Sowmya, H. H.*, Gangappa, E., Ramesh, S., Showkath, B. M., Rakesh, B., Neelavva, K., Suneetha, N. C., Aruna, K., Bharti, Madhura, S. R.,  Gazala, P., Mahesh

University of Agricultural Science, GKVK, Bengaluru, Department of Genetics and Plant Breeding
*Corresponding Author E-mail: sowmyahh.cta@gmail.com
Received: 3.11.2018 | Revised: 30.11.2018 | Accepted: 8.12.2018  

 ABSTRACT

The success of a maize hybrid depends on parental lines with good combining ability to develop stellar hybrids: two inbred parental lines with desirable characteristics should combine into a hybrid. Hence, selection of parents based on combining ability is crusial in producing superior hybrids. Fifteen F3.4 inbred lines selected based on narrow Anthesis-Silking Interval (ASI) (0 days) and high grain yield (20 g plant-1) and four testers (MAI-264, MAI-105, MAI-137 and MAI-215) constituted the basic genetic material. Data of F1 hybrids were subjected to combining ability analysis following line × tester linear model. Analysis of variance for combining ability indicated that crosses differed significantly from one other for all the traits. It is evident from the results that more than 50 per cent of the lines (eight inbreds) were found to be overall good general combiners for all the traits studied. Thirty-four out of 60 hybrids displayed high overall heterotic status and nearly 50 per cent of crosses recorded high overall sca status.

Key words: Inbreds, Maize, Hybrid, GCA, SCA

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Sowmya, H.H., Gangappa, E., Ramesh, S., Showkath, B.M., Rakesh, B., Neelavva, K., Suneetha, N.C., Aruna, K., Bharti, Madhura, S. R.,  Gazala, P., Mahesh, Overall GCA, SCA and Heterotic Status of Maize (Zea mays L.) Inbreds and Hybrids, Int. J. Pure App. Biosci.6(6): 125-130 (2018). doi: http://dx.doi.org/10.18782/2320-7051.7135