Effects of High Temperatures on Pollen Germination and Physio-Morphological Traits in Upland Cotton (Gossypium hirsutum L.)

文献类型： 外文期刊

第一作者： Dev, Washu

作者： Dev, Washu;Sultana, Fahmida;He, Shoupu;Hu, Daowu;Geng, Xiaoli;Du, Xiongming;Hu, Daowu;Du, Xiongming;Iqbal, Babar

作者机构：

关键词： cotton; heat stress; morphology; physiology; pollen germination

期刊名称：JOURNAL OF AGRONOMY AND CROP SCIENCE （ 影响因子：2.8； 五年影响因子：3.6 ）

ISSN： 0931-2250

年卷期： 2025 年 211 卷 4 期

页码：

收录情况： SCI

摘要： Cotton, an essential part of the worldwide textile sector, is very vulnerable to heat stress (HS), which endangers its development and output. This research assessed 18 upland cotton varieties to pinpoint resilient genotypes under heat stress by examining their physiological and morphological reactions. In the years 2019-2020, characteristics like pollen viability, cell membrane thermostability, boll weight, lint percentage and fibre quality were evaluated. Statistical analyses indicated considerable variation among cultivars under HS, showing positive correlations between pollen viability, fibre length and lint percentage, as well as a strong relationship between lint percentage and boll weight. Principal component analysis revealed clear groups of physiological, agronomic and fibre quality characteristics. Genotypes were classified into four categories: CS-85, X-62 and X-84 exhibited outstanding combined physiological and agronomic resilience, whereas MCU-5, D-55, HG-BR-8 and ZC excelled in morphological characteristics; R-89 and S-5 displayed improved lint percentage and fibre length. These results highlight the promise of particular cultivars to guide breeding initiatives aimed at developing heat-resistant cotton varieties, tackling the difficulties created by increasing global temperatures.

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