Heterosis Assessment for Yield Related Traits in F₁ Rice Hybrids

Fasih Uddin* and Syed Mehar Ali Shah

Department of Plant Breeding and Genetics-Faculty of Crop Production Sciences, The University of Agriculture Peshawar-Pakistan

*Corresponding Author: Fasih Uddin, Department of Plant Breeding and Genetics-Faculty of Crop Production Sciences, The University of Agriculture Peshawar-Pakistan.

Received: January 27, 2022; Published:

Abstract

Realizing the genetic potential of hybrid rice for yield improvement, the present study was undertaken to study the performance of F₁ rice hybrids derived from 8 × 8 full diallel mating design. F₁ rice hybrids along with the parents were planted in randomized complete block design with three replications at The University of Agriculture-Peshawar during 2019 rice crop growing season. Significant (P ≤ 0.01) differences among the parental genotypes and F₁ hybrids were observed for yield related traits. Most of the F₁ rice hybrids showed superior performance for yield related traits in comparison with the parental genotypes. Among F₁ cross combinations, Shaheen-Basmati × Shua-92 displayed maximum panicle length (33.7 cm), primary branches panicle^-1 (12), secondary branches panicle^-1 (35), grains panicle^-1 (95), 100-grain weight (4.0 g) and grain yield plant^-1 (44.7 g). F₁ cross combination, DR-82 × Shaheen-Basmati revealed the highest better-parent heterosis for panicle length (16.38%) and 100-grain weight (32.50%) while F₁ hybrid, Shaheen-Basmati × Shua-92 showed maximum better-parent heterosis for primary branches panicle^-1 (24.44%) and secondary branches panicle^-1 (21.35%). Maximum better-parent heterosis for grains panicle^-1 (67.31%) was manifested by F₁ cross combination, DR-92 × Shaheen-Basmati whereas highest better-parent heterosis for grain yield plant^-1 (157.88%) was displayed by F₁ rice hybrid, Shaheen-Basmati × Shua-92. On the basis of the superior performance for yield related traits, F₁ cross combinations, DR-82 × Shaheen-Basmati, Shaheen-Basmati × Shua-92 and DR-92 × Shaheen-Basmati are recommended for commercial use as rice hybrids after multi-locational trials. Additionally, segregating generations of these hybrids could be advanced to develop rice cultivars with desirable attributes.

Keywords: Rice; Heterosis; F₁ Rice Hybrids; Grain Yield; Yield Related Traits

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Citation

Citation: Fasih Uddin and Syed Mehar Ali Shah. "Heterosis Assessment for Yield Related Traits in F₁ Rice Hybrids". Acta Scientific Agriculture 6.5 (2022): 12-24.

Copyright

Copyright: © 2022 Fasih Uddin and Syed Mehar Ali Shah. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.