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Article

Evaluating Genotype × Environment Interactions of Yield Traits and Adaptability in Rice Cultivars Grown under Temperate, Subtropical and Tropical Environments

1
Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
2
Crop Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
3
Delta Research and Extension Center, Mississippi State University, Stoneville, MS 38776, USA
*
Author to whom correspondence should be addressed.
Xing Huang and Su Jang contributed equally to this work.
Academic Editor: Diego Jarquin
Agriculture 2021, 11(6), 558; https://doi.org/10.3390/agriculture11060558
Received: 27 May 2021 / Revised: 14 June 2021 / Accepted: 17 June 2021 / Published: 18 June 2021
(This article belongs to the Section Genotype Evaluation and Breeding)
Rice yield is a complex trait that is strongly affected by environment and genotype × environment interaction (GEI) effects. Consideration of GEI in diverse environments facilitates the accurate identification of optimal genotypes with high yield performance, which are adaptable to specific or diverse environments. In this study, multiple environment trials were conducted to evaluate grain yield (GY) and four yield-component traits: panicle length, panicle number, spikelet number per panicle, and thousand-grain weight. Eighty-nine rice varieties were cultivated in temperate, subtropical, and tropical regions for two years. The effects of both GEI (12.4–19.6%) and environment (23.6–69.6%) significantly contributed to the variation of all yield-component traits. In addition, 37.1% of GY variation was explained by GEI, indicating that GY performance was strongly affected by the different environmental conditions. GY performance and genotype stability were evaluated using simultaneous selection indexing, and 19 desirable genotypes were identified with high productivity and broad adaptability across temperate, subtropical, and tropical conditions. These optimal genotypes could be recommended for cultivation and as elite parents for rice breeding programs to improve yield potential and general adaptability to climates. View Full-Text
Keywords: rice yield; genotype by environment interaction (GEI); genotype evaluation; multiple environmental trials rice yield; genotype by environment interaction (GEI); genotype evaluation; multiple environmental trials
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MDPI and ACS Style

Huang, X.; Jang, S.; Kim, B.; Piao, Z.; Redona, E.; Koh, H.-J. Evaluating Genotype × Environment Interactions of Yield Traits and Adaptability in Rice Cultivars Grown under Temperate, Subtropical and Tropical Environments. Agriculture 2021, 11, 558. https://doi.org/10.3390/agriculture11060558

AMA Style

Huang X, Jang S, Kim B, Piao Z, Redona E, Koh H-J. Evaluating Genotype × Environment Interactions of Yield Traits and Adaptability in Rice Cultivars Grown under Temperate, Subtropical and Tropical Environments. Agriculture. 2021; 11(6):558. https://doi.org/10.3390/agriculture11060558

Chicago/Turabian Style

Huang, Xing, Su Jang, Backki Kim, Zhongze Piao, Edilberto Redona, and Hee-Jong Koh. 2021. "Evaluating Genotype × Environment Interactions of Yield Traits and Adaptability in Rice Cultivars Grown under Temperate, Subtropical and Tropical Environments" Agriculture 11, no. 6: 558. https://doi.org/10.3390/agriculture11060558

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