福建林业科技Issue(2)：74-78,5.DOI:10.13428/j.cnki.fjlk.2014.02.017
油桐不同无性系光合特性研究
Stady on Photosynthetic Characteristics among Different Vernicia fordii Clones
摘要
Abstract
In order to make better use of Vernicia fordii ( Hemsl.) resources, photosynthetic characteristics of five Vernicia fordii (Hemsl.) clones planted in Nanning ,which are Wuxuan-3,Guizhou-27,Tianbaoshuiku,Wuxu-4 and Wuxuan-2,were measured u-sing Li-6400 XT portable photosynthesis system in August.The results indicate: ( 1 ) The daily photosynthetic rate change of the Guizhou-27 and Tianbaoshuiku present as single summit type without ″noon break″phenomenon,however,that of Wuxuan-2,Wuxu-an-3 and Wuxu-4 present as double summit type accompanied with ″noon break″phenomenon.(2)Among the tested clones,photo-synthetic efficiency of Guizhou-27 is the highest,and the average daily net photosynthetic rate reach 6.51 μmol· m-2 · s-1 with the strongest material accumulating ability ,while Wuxuan-3 is the weekest,only account for 31.9%of Guizhou-27,therefore,the materi-al accumulating ability of Wuxuan-3 is the lowest.(3) The order based on daily average net photosynthetic rate from high to low is Guizhou-27,Tianbaoshuiku,Wuxu-4,Wuxuan-2,and Wuxuan-3,respectively.The light response curve of each clone was measured under the conditions of simulated photosynthetic radiation , the maximum net photosynthetic efficiency of the five Vernicia fordii (Hemsl.) clones ranges between 17.53 and 36.25 μmol· m-2· s-1,that of Guizhou-27 is the highest,and that of Wuxuan-2 is the lowest.The light compensation point of Wuxu-4 is the lowest with the strongest capacity to utilize low light among each clone ,while the light compensation point of Tianbaoshuiku is the highest with the weakest capacity to utlize low light .The light saturation point of Guizhou-27 and Tianbaoshuiku is higher ,with the stronger capacity to utilize strong light;while the light saturation point of Wuxuan-3 Wuxu-4 and Wuxuan-2 is lower ,with the weaker capacity to utilize strong light .关键词
油桐/光合速率/光响应Key words
Vernicia fordii( Hemsl.) clones/photosynthetic rate/light response分类
农业科技引用本文复制引用
黄莉雅,黄晓露,姚雪涛,周招娣..油桐不同无性系光合特性研究[J].福建林业科技,2014,(2):74-78,5.基金项目
广西林科院基本科研业务费项目（林科201216号）；广西林业科研项目 （）
