广西植物Issue(6)：806-811,820,7.DOI:10.3969/j.issn.1000-3142.2014.06.013
遮荫对濒危植物甜菜树光合生理和叶绿素荧光特性的影响
Effects of shading on the photosynthetic characteristics and chlorophyll fluorescence of the endangered plantYunnanopilia longistaminata
摘要
Abstract
In order to provide the scientific basis for the species conservation and sustainable exploitation and utiliza-tion,the effect of different shadness(0,50%,65% and 80% shading)on the photosynthetic characteristics,chloro-phyll fluorescence and stomata structure of an endangered species Yunnanopilia longistaminata were studied.The results indicated that net photosynthetic increased at 50% shading but decreased at 80% shading.The transpiration rate and stomatal conductance increased at both 50% and 65% shading,which was helpful to photosynthetic process. Meanwhile,both of net photosynthetic and transpiration rates of the plant were suppressed as a result of the stomata limitation and the increase of the intercelluer CO2 at 80% shading.For the chlorophyll fluorescence parameters,the maximal photochemical efficiency (F v/F m )and the actual quantum yield of photosystem Ⅱ(ΦPSⅡ)decreased signifi-cantly under 80% shading.Shading treatments also decreased the stomatal density and stomatal index.关键词
甜菜树/遮荫/光合生理/气孔结构/叶绿素荧光参数Key words
Yunnanopilia longistaminata/shading/photosynthetic characteristic/stomata structure/chlorophyll fluorescence parameters分类
农业科技引用本文复制引用
杨冠松,张爱丽,申仕康,吴春妍,王跃华,申意..遮荫对濒危植物甜菜树光合生理和叶绿素荧光特性的影响[J].广西植物,2014,(6):806-811,820,7.基金项目
国家自然科学基金(31360074) （31360074）
云南大学生命科学学院科学研究与人才培养开放基金(2012S202) （2012S202）
