安徽农业大学学报2018，Vol.45Issue(1)：81-89,9.DOI:10.13610/j.cnki.1672-352x.20180302.017
伊犁地区不同引种杨树品系苗木光合日变化特性研究
Diurnal variations of photosynthetic characteristics in seedlings of different introduced Poplar clones in Ili region, Xinjiang
摘要
Abstract
In this study,we analyzed the correlation between photosynthetic characteristics and environment factors in seedlings of 10 introduced poplar clones through measuring the photosynthetic physiological indexes using Li-6400XT photosynthetic apparatus in order to provide some practical guidance for selecting and popularizing excellent trees.The results suggested that:the daily mean value of the highest net photosynthesis rate (Pn) was observed in P.deltaids ×P.pseudo-simonii'LX-6'and the lowest was observed in P.simonii canaden×P.russkii-9.Except for P.deltaids ×P.pseudo-simonii'LX-6',the diurnal variation of Pn showed a bimodal curve,which was mainly caused by stomatal limitation.The diurnal variation of transpiration rate (Tr) showed a single peak curve or bimodal curve,and the daily Tr mean value of P.deltaids ×P.pseudo-simonii'LX-2'and P.deltaids ×P.pseudo-simonii'LX-6'was high,while it was the lowest in Populus×euranericana'Guarien'.Populus×euranericana 'Guarien'and Populus suaveolens Fisch.×P.liaoningensis'TL-13'showed a higher level of WUE and LUE,and the overall daily mean WUE and LUE of introduced poplar clones were slightly higher than the control.The physiological and ecological factors had different effects on Pn and Tr,as the stomatal conductance (Gs) had a great impact on Pn.Similarly,the air temperature (Ta) greatly affected Tr.Clustering analysis of the 10 poplar clones showed that:Populus×euranericana'Guarien',Populus suaveolens Fisch.×P.liaoningensis'TL-13',Populus×liaohenica,Populus sieboldie Miq.,and Populus euramericana belong to a high indicator type of growth,ground diameter,Pn,Tr,WUE and LUE,which can adapt to the local climate better.Populus×liaoningensis,P.deltaids ×P.pseudo-simonii 'LX-6',P.deltaids ×P.pseudo-simonii'LX-2'and Populus P.Xcanadensis Moench cv.'Sacrou 79'were of the middle and P.simonii canaden×P.russkii-9 showed a relatively low level of the indicators.By comparing the photosynthetic characteristics and growth,Populus×liaoningensis,P.deltaids ×P.pseudo-simonii'LX-6'and P.deltaids ×P.pseudo-simonii'LX-2'were screened out as superior clones for local popularization.关键词
伊犁地区/引种/杨树品系/光合特性Key words
Ili region/variety introduction/poplar clones/photosynthetic characteristics分类
农业科技引用本文复制引用
夏诗书,李宏,程平,夏黎,李斌,武胜利,沙吉旦·尕衣提,吾马尔·吾哈甫,郑朝晖..伊犁地区不同引种杨树品系苗木光合日变化特性研究[J].安徽农业大学学报,2018,45(1):81-89,9.基金项目
新林科字[2017]26号(优良杨树品种的二次选育与培养研究)资助. （优良杨树品种的二次选育与培养研究）
