Physiological fundamentals of the AnM cultivation technique in peanut production: Leaf photosynthetic hysteresis is reduced by exposing hypocotyls
文献类型: 外文期刊
作者: Qin, Feifei 1 ; Takano, Tetsuo 1 ; Xu, Hui-lian 2 ;
作者机构: 1.Univ Tokyo, ANESC, Lab Environm Stress Tolerance Mech, Nishi Tokyo 1880002, Japan
2.Int Nat Farming Res Ctr, Matsumoto, Nagano 3901401, Japan
3.SAAS, Shandong Peanut Inst, Qingdao 266100, Peoples R China
关键词: Hysteresis;hypocotyl exposure;peanut;photosynthetic capacity;mathematics;mesophyll conductance;stomatal conductance
期刊名称:JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT ( 影响因子:0.435; 五年影响因子:0.484 )
ISSN: 1459-0255
年卷期: 2012 年 10 卷 2 期
页码:
收录情况: SCI
摘要: When photosynthetic photon flux (PPP) is changed from low to high and then from high to low, the photosynthetic rate (P-N) at each PPF level is usually higher during the cycle of changing PPF from high to low than during the cycle from low to high. The difference between the two PPF response curves is defined as photosynthetic hysteresis (H-p). H-p would be smaller if physiological activities are high in a plant. The previous experiments of our research have demonstrated that physiological activities are higher in peanut plants grown with the AnM technique including hypocotyl exposure. In the present experiment, H-p was examined in the peanut crop grown with the AnM technique. Peanut leaf photosynthetic activities were improved by exposing the hypocotyl, one practice of the A technique, and film mulching, the combined practice of the modified AnM technique. The improved photosynthetic activities also reflected in less H-p. H-p was consistent with hysteresis of stomatal and mesophyll conductance. Less H-p could be an indicator of higher physiological activities, as improved by the hypocotyl exposing and film mulching in the peanut crop.
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