米的抗寒应激能力:基因型变异,产量特征和GGE双图洞察力
Tanaya Bala1, Sarita Pradhan2, Twinkle Jena3
1Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India.
Scientific reports
|October 29, 2025
概括
识别耐寒大米基因型对于保持作物产量至关重要. 梅赫尔在寒冷压力下发芽率最高,而比鲁帕和哈拉维拉显示出高产量潜力,这表明它们对寒冷环境的特殊适应.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 遗传学 是一个遗传学.
背景情况:
- 米 (Oryza sativa L.) 是全球重要的主食,但在早期生长期间非常容易受到寒冷压力,导致产量大幅减少.
- 选大米基因类型的耐寒性对于确保作物建立和在具有挑战性的环境中最大限度地提高产量至关重要.
研究的目的:
- 通过发芽试验,生物识别和生物化学参数,评估十种大米基因型的耐寒性.
- 识别具有较强抗低温压力的大米品种,以改善作物生产.
主要方法:
- 在寒冷压力条件下的实验室发芽测试.
- 选十种大米基因型的寒冷耐受性,基于发芽率,大长度 (PERCOL,REDCOL),植物高度,耕地,力,尖生育力和100种种子重量.
- 生物化学分析包括和碳水化合物含量.
- 基因型按收益率 (GGE) 的双图分析,以获得收益率稳定性.
主要成果:
- 在寒冷压力下,Meher表现出最高的发芽率 (95%). 贾贾蒂和拉尼达纳显示出微小的发芽变化 (2-7%).
- 寒冷压力减少了植物的高度 (9.2-31.1%) 和生产力的耕种者 (36.8-37.1%). 萨曼塔和比鲁帕分别在控制和寒冷压力下记录了最高的耕作者.
- 在寒冷压力下,比鲁帕的产量最高 (12.25克/植物). 哈拉维拉和比鲁帕分别通过GGE双线分析被确定为控制和冷压下的高收益者. 萨曼塔的蛋白质和碳水化合物含量很高.
结论:
- 在大米品种中,在耐寒性方面存在显著的基因型变异.
- 比鲁帕,哈拉维拉,拉尼达纳和萨曼塔由于它们的弹性和产量稳定性,在容易受寒冷的地区表现出种植的潜力.
- 对寒冷耐受性生理和遗传机制的进一步研究可以有助于开发适应各种环境条件的改良大米品种.
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