Drought tolerance monitoring of apple rootstock M.9-T337 based on infrared and fluorescence imaging
文献类型： 外文期刊
作者： Gao, D. T. 1 ; Shi, C. Y. 3 ; Li, Q. L. 3 ; Wei, Z. F. 3 ; Liu, L. 3 ; Feng, J. R. 1 ;
作者机构： 1.Shihezi Univ, Coll Agr, Dept Hort, Shihezi 832003, Xinjiang, Peoples R China
2.Xinjiang Prod & Construct Corps Key Lab Special F, Cultivat Physiol & Germplasm Resources Utilizat, Shihezi 832003, Xinjiang, Peoples R China
3.Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Zhengzhou 450009, Henan, Peoples R China
关键词： chlorophyll fluorescence; drought stress; infrared thermal imaging; M.9-T337; photosynthesis
期刊名称：PHOTOSYNTHETICA （ 影响因子：3.189； 五年影响因子：3.38 ）
ISSN： 0300-3604
年卷期： 2021 年 59 卷 3 期
页码：
收录情况： SCI
摘要： Apple rootstock seedling M.9-T337 was selected to explore the effect of drought stress. The findings indicated that the relative water content of both the leaf and soil gradually decreased with an increase in drought stress. The water-use efficiency of the leaves increased gradually but decreased sharply after 20 d of drought. Changes in the gas-exchange parameters and chlorophyll fluorescence parameters reflected the gradual decrease in the photosynthetic capacity of the plants with drought stress duration. Infrared thermal imaging showed significant temperature differences between the drought-stressed and control plants after 15 d of drought treatment. When irreversible damage occurred under drought stress, the crop water-stress index and relative water content of the leaf and soil were 0.7, 60.5, and 17.8%, respectively. Based on the results, we formulated a drought stress-grade standard. Further, we established that the best time for irrigation is when drought stress reaches grade 3.
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