水稻开花期冷害机理与鉴定指标的研究

• 作 者: 李达模 于新民 王洪春
• 机 构: 中国科学院长沙农业现代化研究所,中国科学院长沙农业现代化研究所,中国科学院上海植物生理研究所
• 出 处: 中国农业科学
• 发表日期: 1986年02期
• 关键词: 耐冷性 鉴定指标 障碍型冷害 冷温 减数分裂期 空秕率 颖花数 人工气候室 开花率 杂交后代

水稻是喜温作物,对冷温不适应,如在减数分裂期和开花期遇几天冷温(<15℃和≤20℃),便会产生“障碍型冷害”,严重影响水稻受精结实,空秕率增加,产量大为降低。国内外许多遗传育种工作者,近些年来对水稻的冷温敏感时期与敏感性器官,冷温处理的花药生理异常与组织异常,品种耐冷性差异与耐冷性指标,选育耐冷性品种等方面开展了大量的研究,为进一步开展水稻耐冷性育种的研究提供了理论和实践方面的依

Rice is a thermophilic crop that does not adapt to cold and warm temperatures. For example, during the meiosis and flowering periods, cold temperatures (<15 ° C and ≤20 ° C) occur for a few days, causing “cold damage” and severely affecting rice fertilization. The rate of increase, greatly reduced production. In recent years, many domestic and foreign genetics and breeding workers carried out a large number of research on rice cold-sensitive period and sensitive organs, physiological and physiological abnormalities of anther treated with cold-temperature treatment, cold tolerance and cold tolerance of cultivars, Research, provide theoretical and practical basis for further research on cold tolerance breeding in rice