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ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Crop and Product Physiology
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1568859
This article is part of the Research Topic Elucidating the Molecular, Physiological, and Biochemical Mechanisms Underlying Stress Responses in Crop Plants View all 12 articles
Genetic diversity in F3 segregating populations of rice (Oryza Sativa L.) genotypes under salt stress
Provisionally accepted
Azhar Ali Laghari 1
Shabana Memon 2* Syed Abdul Majeed Musavi 2
Aamir Ali 1 Akash Kumar 3* Qingxia Guo 1*- 1 Shanxi Agricultural University, Jinzhong, China
- 2 Sindh Agriculture University, Tando Jam, Sindh, Pakistan
- 3 Guangzhou University, Guangzhou, Guangdong Province, China
Rice is an important cereal crop rich in starch and carbohydrates grown around the globe.Despite its significance, rice exhibits substantial genetic variation, particularly under environmental stresses such as salinity. This study investigates the genetic diversity of F3 segregating populations of rice under normal and salt stress. Various segregating genotypes were evaluated, demonstrating statistically significant differences (p<0.01 and p<0.05, ANOVA) in morphological and physiological parameters. The genotypes Kharagnjia and L-12 performed well in normal soils, while Shua-92 and L-20 showed better performance in tiller plant-1 and panicle length. The cluster analysis grouped rice genotypes into four major clusters based on genetic similarity. Principal Component Analysis (PCA) identified tillers per plant, panicle length, grain yield per plant, and leaf area as key contributors to genetic variation. The highest variability was observed in PC-XII (100%) and PC-XI (98.3%). These findings provide valuable insights for breeding programs aimed at enhancing salt tolerance in rice.
Keywords: Chlorophyll content, F3 segregating populations, genetic diversity, Leaf area, rice (Oryza sativa L.), salinity tolerance, Salt stress L-2, L-4, L-6, L-8, L-10, L-12, L-14, L-16, L-18, and
Received: 30 Jan 2025; Accepted: 17 Mar 2025.
Copyright: © 2025 Laghari, Memon, Musavi, Ali, Kumar and Guo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Shabana Memon, Sindh Agriculture University, Tando Jam, 71000, Sindh, Pakistan
Akash Kumar, Guangzhou University, Guangzhou, 510006, Guangdong Province, China
Qingxia Guo, Shanxi Agricultural University, Jinzhong, China
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