干旱胁迫对10个水稻外源DNA导入系的农艺性状影响

• 作 者: 赵芳明 刘维波 杨正林 凌英华 桑贤春 杨前进 何光华
• 机 构: 西南大学水稻研究所农业部生物技术与作物品质改良重点开放实验室,安徽省农科院绿色食品工程研究所,
• 出 处: 西南大学学报(自然科学版)
• 发表日期: 2009年10期
• 关键词: 导入系 DNA 耐旱 每穗实粒数 农艺性状 随机区组试验 二次枝梗 陆稻 枝梗 粒数

全球淡水资源日渐缺乏,水稻耐旱种质资源创新对粮食生产安全有重要意义.该研究以10个导入空心莲子草DNA的水稻导入系及2个对照为试验材料,采用二因素随机区组试验设计分析了中后期干旱胁迫下导入系及对照品种间农艺性状的差异.结果表明:①穗长、有效穗数、一次枝梗和二次枝梗数水、旱间没有显著差异;而株高、总粒数、每穗实粒数和结实率水、旱差异显著.可以作为水稻耐旱的参考指标.②从农艺性状判断,6号、8号和10号导入系具有耐旱特性.

The global lack of freshwater resources, rice drought-resistant germplasm resources innovation is of great significance for food production safety.In this study, 10 introduction of A. philoxeroides DNA into rice and two lines of rice as the experimental materials, two-factor randomized block test The differences of agronomic traits among the introduced lines and the control lines under drought stress in the middle and late stages were designed and analyzed.The results showed that: (1) There was no significant difference in the spike length, effective panicles, primary branches and secondary branches, The total grain number, grain number per panicle and seed setting rate of water and drought were significantly different, which could be used as a reference index of drought resistance in rice.②The induction of drought resistance was the introduction of 6, 8 and 10 from the agronomic traits.