通过应力耐受性指数识别耐热豆基因型
Rohit Sarkar1, Gyan Prakash Mishra2, Premakumar1
1Division of Genetics, Indian Agricultural Research Institute, New Delhi, India.
Scientific reports
|January 29, 2025
概括
气候变化威胁到粮食安全. 研究人员确定了耐热的豆基因型 (P13143,P13130,P13135),对于提高作物弹性和在热压下维持豆生产至关重要.
科学领域:
- 农业科学 农业科学
- 植物育种 植物育种
- 适应气候变化 适应气候变化
背景情况:
- 气候变化加剧了极端高温事件,威胁到全球粮食安全.
- 终端热应激在关键的繁殖阶段显著降低了镜片的生产力.
- 关于为繁殖计划确定耐热的豆来源的研究有限.
研究的目的:
- 为了确定耐热的豆基因型,以提高作物弹性.
- 评估热应激对豆产量的影响,并确定合适的热应激指数.
- 为养计划提供遗传资源,旨在提高的耐热性.
主要方法:
- 在两个季节的正常和晚播 (热应激) 条件下评估了158种的基因型.
- 利用11个热应力指数来量化和识别耐热线条.
- 用于基因型评估的相关性分析,集群分析和主要组件分析 (PCA).
主要成果:
- 所有的基因型都显示在热应激条件下,谷物产量减少.
- 像STI,MP,MRP,YI,GMP和HM这样的指数与压力下的收益率正相关.
- 基因型P13143,P13130和P13135被确定为高产和适合跨环境.
结论:
- 基因型P13143,P13130和P13135表现出显著的耐热性和高产量潜力.
- 这些已识别的基因型可以在培养计划中充当有价值的捐赠者.
- 改善的热应激耐受性的遗传基础对于未来的粮食安全至关重要.
相关概念视频
Responses to Heat and Cold Stress
13.3K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.3K
Responses to Salt Stress
13.0K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.0K
Photosystem II
69.7K
The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
69.7K


