七子花苗期光合生理生态特性研究
七子花苗期光合生理生态特性研究-植物科学学报
2002, 20(2) : 125130 J ournal of Wuha n Botanica l Resear ch 柯世省 金则新 李钧敏 张崇邦 ( , 317000) :, : ( 1) , CO2 , CO2 , 7 00 , , 7 00 , 10 0016 00(2) , , , , , ,, ( 3) , , , CO 2 : ; ; ; ; CO ; ; 2 : Q945.79: A: 1000-470X( 2002)02-0125-06 - Study on the Characteristics of Photosynthetic Physio ecology in Leaves of H ep ta codium miconioid es Seedlings - , - , - , - KE Shi Sheng JI Ze Xin LI Jun Min ZHA G Chong Bang ( Taiz hou Teach ers Coll ege , Linhai, Zhejiang317000, China) Abstract: The characteristics of photosynthetic physio-ecology in leaves of H ep tacod ium mic o- nioides seedlings had been studied. The results showed as follows: ( 1) T he diurnal variations of net photosynthetic rates (Pn) and transpiration rates (E) were twin-peakedcurve. T he diurnal variations of internal CO2 concentration (Ci) were just opposite to Pn. T he increasing of Ci at - . midday showed that the decreasing of Pn were related to non stomatal restriction factors Respi- ( ) , - . ration rates R were highest at midday whose diurnal variations were single peaked curve ( s) . The diurnal variations of stomatal resistance r were just opposite to E Solarenergy uti
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