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Plant Science Today (PST)

Research Articles

Vol. 13 No. sp5 (2026): Recent Advances in Agriculture

Assessment of heterosis for grain yield and component traits in bread wheat (Triticum aestivum L. em Thell)

DOI
https://doi.org/10.14719/pst.10592
Submitted
11 July 2025
Published
30-07-2026

Abstract

The present study was conducted under two environments created by different sowing dates, namely normal and late sowing (heat stress environment). During rabi 2022–23, eight genetically diverse parents were crossed in a half diallel mating design. These eight parents, along with their 28 F1 progenies, were evaluated in a randomised block design (RBD) with 3 replications during rabi 2023–24 at the Instructional Farm of Sri Karan Narendra College of Agriculture, Jobner, Rajasthan, India. A substantial degree of heterosis and heterobeltiosis was observed for all the traits studied. Among the significant and desirable heterobeltiosis crosses, HD 2932 × Raj 4238, HD 2864 × Raj 4238, MP 3336 × Raj 4238, MP 3336 × HD 2932, HD 2864 × HD 2932, MP 3336 × CG 1029, Raj 4238 × CG 1029 and Raj 4238 × HI 1634 were identified as promising in the normal environment (E1). In the heat stress environment (E2) the crosses, MP 3336 × HI 1634, Raj 4238 × Raj 3777, HD 2932 × HI 1634 and HD 2864 × Raj 3765 exhibited desirable heterobeltiosis. Notably, HD 2864 × CG 1029 performed well in both environments. Overall, these crosses emerge as promising candidates for achieving significant improvement in wheat (Triticum aestivum L.) grain yield and its component traits under both normal and heat stress conditions.

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