西北林学院学报2017，Vol.32Issue(4)：34-39,86,7.DOI:10.3969/j.issn.1001-7461.2017.04.06
滨海沙地4种相思不同叶龄春季叶绿素荧光参数日动态
Diurnal Changes of Chlorophyll Fluorescence Parameters of Different Leaf Ages of Four Acacia Species in Southeast Coastal Area in Spring
摘要
Abstract
In order to explore the adaptability of Acacia tree species to the climate and environment in coastal sandy land of Fujian Province,four Acacia species were used as research objects,namely A.aulacocarpa,A.crassicarpa,A.cunningharnia and A.cincinnata.The chlorophyll fluorescence parameters in young leaves and mature leaves under natural conditions in spring were measured.The results showed that the initial fluorescence (Fo) and the maximal fluorescence (Fm) diurnal variations of the young and 1-to 2-year-old mature leaves were different.The Fo in young leaves and 1-to 2-years-old mature leaves of A.cincinnata showed a single peak within a day,and the maxima appeared at 12:00.The diurnal changes of Fo value of the young and mature leaves of A.crassicarpa all showed double peak curves,so did the fm of A.cunninghamia and A.crassicarpa.The diurnal variation of the maximum energy conversion efficiency (Fv/Fm) of PSⅡ and the potential activity (Fv/Fo) of PS Ⅱ showed a trend that first decreased and then increased in four Acacia species,and their lowest values appeared at 12:00,among which the A.aulacocarpa was the lowest.The Fv/Fm and Fv/Fo values of mature leaves were more stable than those of young leaves.The results showed that,in spring,A,crassicarpa and A.cincinnata could better adapt to the environment of coastal sandy land,and the adaptability of A.cunninghamia and A.aulacocarpa were slightly worse.关键词
相思树/叶龄/叶绿素荧光参数/日变化Key words
Acacia species/leaf age/chlorophyll fluorescence parameter/diurnal change分类
农业科技引用本文复制引用
胡欢甜,邱岭军,林宇,林宝平,何宗明,黄秀勇,黄政..滨海沙地4种相思不同叶龄春季叶绿素荧光参数日动态[J].西北林学院学报,2017,32(4):34-39,86,7.基金项目
福建省林木种苗科技攻关项目(KLB160004A) （KLB160004A）
福建省林业科技项目(闽林科[2014]2号). （闽林科[2014]2号）
