Deciphering combining behaviour and magnitude of heterosis in bread wheat cross combinations under sub-tropical region

DOI:10.37992/2024.1502.039

  • Ashish Sheera, Tuhina Dey, Mukesh Kumar Pandey,
  • Tushadri Singh, Rubby Sandhu, Loveleen Dhillon,
  • Sachin S. Chikkeri, Radheshyam Kumawat and Rakesh Kumar

Abstract

The purpose of this research was to examine the extent of heterosis in 21crosses of bread wheat (Triticum aestivum L.). These hybrids originated from a line x tester mating scheme in which seven lines were crossed with three testers. Combining ability analysis revealed that the parental lines HP-25 and HD-3086 performed well for grain yield, while HP-24, HP-22, and HP-06 were observed to be better for other qualities that contribute to yield. Significantly higher positive Specific Combining Ability (SCA) for grain yield per plant was observed for the crosses HP-22 x JAUW-683, HP-44 x HD-3086, and HP-45 x RSP-561 suggesting the role of non-additive gene action. The ratio of variances was observed to be less than unity indicating the presence of non-additive genetic effects in these cross combinations. In terms of heterotic impacts on grain yield, yield contributors, and morpho-physiological features, HP-06 x RSP-561 was shown to be the best combination.

Keywords: Combining ability, heterosis, Triticum aestivum, gene action

Published
02-07-2024
How to Cite
Ashish Sheera, Tuhina Dey, Mukesh Kumar Pandey, Tushadri Singh, Rubby Sandhu, Loveleen Dhillon, Sachin S. Chikkeri, Radheshyam Kumawat and Rakesh Kumar

Deciphering combining behaviour and magnitude of heterosis in bread wheat cross combinations under sub-tropical region

. 2024. Electronic Journal of Plant Breeding, 15 2, 387-393. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4736
Issue
Vol 15 No 2 (2024): EJPB
Section
Research Article

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