Relationships between light and physiological characters of five climbing plants

Abstract

Abstract: Studies on the photosynthetic and respiratory rates,light utilization efficiencies and light compensations of five climbing plants showed that the diurnal variations of photosynthetic rates presented double peak,the first peak was between 10:00 to 12:00,and the second was between 14:00 to 16:00.The phenomenon of “noon break" was obvious.The diurnal variations of respiration rates also presented double peak,the first peak was between 11:00 to 13:00,and the second was between 14:00 to 17:00.The light compensation point of Hedera nepatensis,H.helix,Parthenocissus tricuspidata,P.quinuefolia and Wisteria sinensis was 5.73,5.07,9.96,6.40 and 18.93 μmol·m^-2·s^-1,respectively,and the light utilization efficiency of W.sinensis was higher under strong light,P.quinuefolia was the second,but that of H.helix was higher under weak light.The results showed that Wisteria sinensis was a typical heliophytic plant,Parthenocissus tricuspidata and P.quinuefolia were neuter plants,and Hedera nepalensis and H.helix were typical sciophytic plants.

Key words: Climbing plants, Vertical virescence, Hedera helix, Parthenocissus quinuefolia, Wisteria sinensis

CLC Number:

Q948.1

HUANG Chenglin, FU Songling, LIANG Shuyun, JI Yifan. Relationships between light and physiological characters of five climbing plants[J]. Chinese Journal of Applied Ecology, 2004, (7): 1131-1134.

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