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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2020, Volume : 8, Issue : 2
First page : (303) Last page : (310)
Article doi: : http://dx.doi.org/10.18782/2582-2845.8061

Heterotic Potential for Green Cob Yield and Related Traits in Sweet Corn (Zea mays L. saccharata)

Ravikesavan, R.^1* , Niji, M.S.¹, Ganesan, K.N.¹ and Chitdeshwari, T.^2
1Department of Millets, Centre for Plant Breeding and Genetics
²Department of Soil Science and Agricultural Chemistry
Tamil Nadu Agricultural University, Coimbatore – 641003, India
*Corresponding Author E-mail: chithuragul@gmail.com
Received: 15.03.2020  |  Revised: 23.04.2020   |  Accepted: 27.04.2020 

 ABSTRACT

A study was taken up to understand the heterotic potential of sweet corn hybrids in terms of green cob yield. The crosses were made in line x tester fashion with seven lines and testers each. The resulting 49 hybrids were evaluated against the popular private hybrid Sugar 75.  Highly significant variance due to genotypes was obtained for all the characters, which indicated the presence of sufficient variability for improvement. The lines L5 and L4  and the testers T6 and T5 were identified as desirable parents for developing hybrids with improved yield and quality traits due to high  per se performance.   The hybrids  L4 xT6  , L4 xT5, L5xT6, L1 xT7, and L7 xT3  exhibited higher  mean performance for green cob yield. which The hybrid L4 xT6 showed favourable per se performances for thirteen traits in addition to green cob yield. The best five hybrids identified based on mean performance for green cob yield and its associated traits were L4 xT6 , L4 xT5, L5xT6, L1 xT7, and L7 xT3   and these hybrids possess atleast one of the parents which were found to be having superiority in mean performance. For total sugar content trait, hybrids L6 xT5, L5 xT7, L1 xT3 and L5 xT6 showed significant positive heterosis.These hybrids can be potentially used after testing their performance over locations.

Keywords: Sweet Corn, Hybrids, Heterotic potential, Green cob yield.

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

Cite this article: Ravikesavan, R., Niji, M.S., Ganesan, K.N., & Chitdeshwari, T. (2020). Heterotic Potential for Green Cob Yield and Related Traits in Sweet Corn   (Zea mays L. saccharata), Ind. J. Pure App. Biosci. 8(2), 303-310. doi: http://dx.doi.org/10.18782/2582-2845.8061