%0 Journal Article
%T Acclimation of foliar photosynthetic apparatus of three tropical woody species to growth irradiance<br>热带雨林三种树苗叶片光合机构对光强的适应
%A CAI Zhiquan
%A CAO Kunfang
%A FENG Yulong
%A FENG Zhili
%A <br>蔡志全
%A 曹坤芳
%A 冯玉龙
%A 冯志立
%J 应用生态学报
%D 2003
%I 
%X The photosynthetic characteristics and protective role of leaf antioxidant systems were studied for seedlings of three woody species, Anthocephalus chinensis,Barringtonia pendala,Garcinia hanburyi, acclimated to 8%, 25%, 50% of natural sunlight for four months. As growth irradiance increased, the saturation points,the light compensation points of photosynthesis,the maximum net photosynthetic rate,and the non-photochemical quenching efficiency of three species were increased, while the apparent quantum yield (AQY), the effective quantum efficiency (Fv'/Fm'), and the photochemical quenching efficiency (qP) were decreased.In protective enzymes systems, SOD and APX activities increased with increasing growth irradiance, but CAT activity was not consistent with PFD. AsA exhibited the most dramatic increase in response to growth irradiance. It could be concluded that besides the increase in xanthophyll cycle-dependent energy dissipation, the enhancement of leaf antioxidants was also a protective pathway against high light intensity.
%K Growth irradiance
%K Photosynthetic characteristics
%K Protective enzymes
%K Tropical woody plant seedlings<br>生长光强
%K 光合特性
%K 保护酶
%K 热带木本植物幼苗
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=3BC73A35BAE15C3E&yid=D43C4A19B2EE3C0A&vid=F3583C8E78166B9E&iid=E158A972A605785F&sid=8C267C8DC97FEEEF&eid=C4490A71BEB872FA&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=22&reference_num=25