Abstract：In order to study the chlorophyll content(Chl)and variation characteristics of fluorescence kinetic parameters of grape under micro spray condition in extreme drought land, the diurnal variation of chlorophyll fluorescence, Chl variation and the correlation between Chl and fluorescence parameters were analyzed by measuring the Chl and chlorophyll fluorescence in various growth stages of grape. The results show that there are significant differences in Chl and fluorescence parameters in fruit setting, expansion and maturity periods. The variation coefficients of Chl and Fv/Fm are all as small as 0.013-0.017 and 0.009-0.010, respectively. The variation coefficient of Fv/Fo is in 0.026-0.029 and was the largest. On the relationship between Chl and fluorescence parameters, Fv and Fo, Fm, Fv/Fm, Fv/Fo and Fv/Fm are significantly and positively correlated to Fv/Fo, with a correlation coefficient of 0.157-0.999. Fo/Fm is negatively correlated to Fm, Fv, Fv/Fo and Fv/Fm, and the correlation coefficient is in the range of -0.143-0.992. With the increase of water spraying duration, the measured values of Fv/Fm and Fv/Fo decrease obviously, indicating that an appropriate water spraying duration and period can improve the chlorophyll fluorescence characteristics of grape, thus the water stress effect can be reflected exactly.
刘洪波, 白云岗*, 张江辉, 丁平. 微喷条件下葡萄叶绿素质量比及荧光参数变化特征[J]. 排灌机械工程学报, 2018, 36(9): 892-896.
LIU Hongbo, BAI Yungang*, ZHANG Jianghui, DING Ping. Study on chlorophyll content and fluorescence parameters of grape under micro spray conditions. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(9): 892-896.
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