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将来自我国不同省份的120份小豆种质资源在泰国的田间种植,取每个品种的倒3叶置于放有清水的瓷钵中,用透明玻璃片压住后静置太阳光下,通过不同时间后(24 h,48 h和72 h)离体叶片的失绿速度划分不同品种的不同光氧化等级,并与种植于盆钵中的另一组相同小豆品种通过花荚期(开花后4~5 d)人工控水法测定的抗旱等级进行对比,试验结果表明:小豆离体叶片的光氧化等级与人工控水法的相关系数达到0.792,达极显著水平。因此,在实际操作中,我们可以用此法对小豆的大量种质资源的抗旱能力进行筛选,从而为小豆抗旱育种提供了一条抗旱性筛选的新方法。
120 adzuki bean germplasm resources from different provinces in China were planted in the field in Thailand. The next 3 leaves of each variety were placed in a porcelain bowl with clear water, pressed with clear glass and allowed to rest under sunlight The photosynthetic rate of detached leaves at different times (24 h, 48 h and 72 h) was divided into different light-oxidation grades. 4 ~ 5 d). The results showed that the correlation coefficient between photooxidation level and artificial water control method of adzuki bean leaves reached 0.792, reaching a significant level. Therefore, in practice, we can use this method to screen a large number of adzuki bean germplasm resources drought resistance, which provides a drought resistance of adzuki bean drought screening a new method.