不同旱胁迫对春小麦生育前期抗旱生理性状的影响

Effects of Different Dry Stress on Drought Resistance Physiological Trait of Spring Wheat in Early Growth Period

[目的]明确小麦生育前期旱胁迫对其抗旱生理性状的影响。[方法]在4种水分处理、不同生育期条件下测定水旱2个小麦品种的叶绿素含量和叶含水量。[结果]从分蘖到开花,叶绿素含量随着旱胁迫的增强而增加。在相同水分条件下,抗旱品种的叶绿素含量较非抗旱品种低,叶绿素含量与抗旱性关系密切。[结论]试验结果为小麦抗旱节水研究提供了参考。

[Objective] To clear effects of different dry stress on drought resistance physiological trait of spring wheat in early growth period.[Method]We determined chlorophyll content and leaf water content of two varieties wheat under four different water dispose and in different growing seasons. [Result] From tillering to blossom period,the chlorophyll content increased with the increase of drought stress. Under the same water condition,compared with the non-drought resistant variety,the drought resistant variety contained lower chlorophyll content,and the chlorophyll content was closely related to drought resistance. [Conclusion]The results provide reference for study on resisting drought and saving water of rice.