Comparasion of Photosynthetic and Water Use Characteristics of Different Varieties (Lines) in Prunus humilis(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Comparasion of Photosynthetic and Water Use Characteristics of Different Varieties (Lines) in Prunus humilis

Author(s):: HA Xiaoli; HAN Zhanjiang; LIANG Jiye; (College of Plant Science，Tarim University/Xinjiang Production and Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin/Collaborative Innovation Center for Eco-agriculture Around Tarim Basin，Alar，Xinjiang 843300)

Keywords:: Prunus humilis; photosynthetic characteristics; water use efficiency (WUE)

Abstract:: The measurement of leaf photosynthetic characteristics and water use characteristics of 9 varieties (lines) in Prunus humilis was taken by GFS3000 photosynthesis system under natural condition.The results showed that net photosynthetic rate (Pn)，stomatal conductance (Gs)，intercellular CO2 concentration (Ci)，transpiration rate (Tr)，transpiration ratio (TR) and water use efficiency (WUE) were different among 9 varieties (lines) in Prunus humilis.Under the Regiment 224 cultivation condition，there was an extremely significant positive correlation between Pn and Gs，Tr，WUE，while an extremely significant negative correlation between Pn and Ci，TR.Ci had an extremely significant positive correlation with TR while an extremely significant negative correlation with WUE.Gs had an extremely significant positive correlation with Tr while a significant negative correlation with TR.HY-Ⅵ had the highest Pn and higher WUE，but its WUE was not the highest，while HY-Ⅰ had the highest WUE and higher Pn，but its Pn was not the highest.Pn and WUE of 01-01 were all the lowest and those of the other varieties (lines) were in the middle level.Different varieties(lines) adapted to growth environment by different ways of regulation of photosynthesis and water use in Prunus humilis.

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Last Update: 2017-03-22