在气候变暖条件下延迟播种可以通过改变粉的结构特征来改善米的质量
Xiaoyuan Zhong1,2, Fei Deng3, Li Wang1
1State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/Key Laboratory of Crop Eco-Physiology and Farming System in Southwest China/College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China.
BMC plant biology
|December 16, 2025
概括
延迟播种通过改变粉结构,提高了米的质量. 这种方法减少了状,增强了外观和味道,为农业适应气候变化提供了一种战略.
科学领域:
- 农业科学 农业科学
- 食品科学 食品科学 食品科学
- 植物生理学 植物生理学
背景情况:
- 全球变暖需要适应性农业策略,如延迟播种 (DS).
- 对于DS对米粉结构和由此产生的质量的影响仍然不够了解.
- 米质量受粉成分,结构和谷物特征的影响.
研究的目的:
- 研究延迟播种对印加大米的粉结构和质量的影响.
- 在延迟播种条件下,将粉特性变化与大米质量参数相关联.
- 评估延迟播种作为改善大米质量的适应策略的潜力.
主要方法:
- 实地实验是在中国四川 (2017-2018) 两个播种日期 (常规和延期) 的两个印加大米品种进行的.
- 监测了谷物填充阶段的温度,显示在延迟播种期间降低了1.87-2.99°C.
- 分析了米的质量参数 (粉含量,粉含量,分子量,链长,颗粒大小,结晶度) 和感官属性 (外观,味道,综合得分).
主要成果:
- 延迟播种显著增加了粉素含量 (AC),分枝度 (BD) 和分子重量比 (Mw/Mn,Mz/Mn),同时减少了粉颗粒大小和粉素链长度.
- 粉结构的这些变化导致灰米率 (CRR) 和灰度 (CD) 的显著降低.
- 延迟播种对米质量产生了积极影响,显著增加了外观价值 (AV),味道价值 (TV) 和综合得分 (CS),但对磨质量没有显著影响.
结论:
- 延迟播种通过修改粉成分和结构特征,有效地改善了大米的外观和食用质量.
- 在延迟播种条件下观察到的水质量的改善,为适应气候变化提供了一个可行的策略.
- 对优化延迟播种实践的进一步研究可以在气候变化中提高大米的生产和质量.
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