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《Journal of Inner Mongolia Agricultural University(Natural Science Edition)》 2015-05
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COMPARATIVE STUDY ON DIURNAL VARIATION OF PHOTOSYNTHESIS AT THE POD SETTING STAGE FOR DIFFERENT PEANUT VARIETIES IN NORTHERN

XU Huifeng;YUAN Shuheng;GAO Huayuan;XU Baohui;WANG Liyan;YANG Chenglin;ZHU Bingbing;Agricultural College,Jilin Agricultural University;Institute of Peanut,Jilin Academy of Agricultural Sciences;Peanut Institute of Shuangliao City in Jilin Province;  
Peanut plant growth and development,diurnal variation of photosynthetic characteristics of four peanut varieties during bearing pod stage in northern were monitored using portable LI-6400 Photosynthesis System. Investigated the effects between diurnal variation of photosynthetic characteristics and net photosynthetic rate. The results show that net photosynthetic rate of four peanut varieties had two peaks and midday depression at 12: 00 and 16: 00 O'clock. It was speculated that the midday depression of LH12 and HY22 was controlled by stomatal factor. But the midday depression of HY20 and HY16 was controlled by nostomatal factor. The curves of four peanut varieties in transpiration rate had two peaks and single peak. Transpiration rate of HY20 and HY16 had two peaks,when LH12 and HY22 had single peak. Correlation analysis showed: net photosynthetic rate and transpiration rate of four peanut varieties was significantly positively correlated with stomatal conductance and significantly negatively correlated with Ca. Tr,Cond and Ca was the major environmental factor influencing diurnal variation of the Pn of peanut.
【Fund】: 吉林省科技厅重点攻关项目(20150204012NY);(20130206072NY);; 长春市科技局项目(2014196)
【CateGory Index】: S565.2
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