增加粉的应用可以通过减轻粉开始进一步发展期间的高温损伤来提高米产量
Qiuqian Hu1, Na Yan1, Kehui Cui1
1National Key Laboratory of Crop Genetic Improvement, Ministry of Agriculture Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
Physiologia plantarum
|February 27, 2024
概括
高温降低了米产量,因为它影响了尖细胞的生育能力. 将更多的气应用于米粉,可以改善的发育和花粉的活力,显著减少热应激下的产量损失.
科学领域:
- 农业学是一种农业学.
- 植物生理学 植物生理学
- 农作物科学 农作物科学
背景情况:
- 谷产量与尖细胞生育能力有关,尖细胞生育能力对高温敏感.
- (N) 对于米产量形成至关重要,但其在热应激下的作用需要进一步研究.
研究的目的:
- 为了确定在关键的恐慌启动阶段在高温下如何影响粉的应用,在高温下影响米产量形成.
- 为了比较热应激和管理对热敏感 (Liangyoupeijiu) 和耐热 (Shanyou63) 米品种的影响.
主要方法:
- 在恐慌开始期间,两种大米品种经历了高温 (HT) 或控制温度.
- 应用了低恐慌 (LPN) 和高恐慌 (HPN) 的治疗方法.
- 分析了谷物产量,刺生育力,和花粉发育,以及恐慌温度.
主要成果:
- 高温显著降低了谷物产量,在两种品种中,LPN的损失比HPN更大.
- 热应激损害了的发育和花粉的活力,导致尖细胞的生育能力下降.
- 通过改善的发育,花粉的活力和尖端的生育能力,降低了产量损失,特别是在热敏品种中.
- 由于蒸发转化增加,HPN在热应激下也导致恐慌温度略有下降.
结论:
- 增加粉的应用是一个有前途的策略,以提高大米的抗高温压力的弹性.
- 优化管理可以改善和花粉的发展,从而在热应激条件下减少大米的产量损失.
- 这些发现突出了有针对性的应用的潜力,以保护在气候变化中的大米生产.
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