广西植物Issue(4)：475-481,7.DOI:10.3969/j.issn.1000-3142.2013.04.009
Guaduaamplexifolia光合季节动态
Seasonal variation in photosynthesis of an introduced bamboo species Guadua amplexifolia
摘要
Abstract
Photosynthetic characteristics and main impact factors were measured in different seasons,and the data were analyzed by correlation and path coefficients,and different irradiances were measured in Hua’an County,Fuj ian Province,in order to study Guadua amplexifolia’s photosynthesis characteristic,CO2 assimilation rate on different times in one day.The results indicated that light saturation point (LSP),light compensation point (LCP),dark res-piration rates(Rd),and net photosynthesis at saturation light (Pnmax)all reached highest in July,lower in April and October,the lowest in January.In all seasons but April,daily course of net photosynthesis rate (Pn)had midday-de-pression pattern.The daily mean value of Pn was in the sequence April>July>October>January.All environmental and physiological factors except for relative humidity (RH)had significant correlation with Pn,such as Tr ,Ci,Gs, VPD,PAR,Tleaf and so on.The main environmental factors differed in every season.In January,leaf temperature (Tleaf)was the most important factor to Pn.But the effect of RH increased obviously in October.The effect of tested environmental factor to Pn was in the sequence VPD>PAR>RH>Tleaf in the whole growth period.关键词
Guadua amplexifolia/光合日进程/光响应/相关分析/通径分析Key words
Guadua amplexifolia/diurnal change in net photosynthesis/light response/correlation analysis/path coefficients analysis分类
农业科技引用本文复制引用
马兰涛,陈双林..Guaduaamplexifolia光合季节动态[J].广西植物,2013,(4):475-481,7.基金项目
国家林业局“948”项目(2000-04-16) （2000-04-16）
