Study on the Daily Change of Photosynthetic Rate for Prunus domestica × armeniacain Different Seasons  

杏李不同季节光合速率日变化研究（英文）

作　　者：李雯雯[1] 冯贝贝[1] 魏雅君[1] 牛莹莹[1] 徐业勇 王明 杨红丽 廖康[1] 

机构地区：[1]新疆农业大学特色果树研究中心,新疆乌鲁木齐830052 [2]新疆林科院佳木试验站,新疆乌鲁木齐843100

出　　处：《Agricultural Science & Technology》2016年第4期838-844,941,共8页农业科学与技术（英文版）

基　　金：Supported by High-quality and High-efficient Cultivation Technology Demonstration and Promotion of Apricot and Plum(ZYLYKJTG2015020)~~

摘　　要：[Objective] The aim of this study was to explore the daily change of photosyntheticratefor Prunus domestica ×armeniacain different growing seasons. The study can provide theoretical basis for arid area high yield and quality cultivation.[Method] The photosynthetic physiological properties of leaves of different types of Prunus domestica × armeniaca were measured by the Li-6400 portable photosynthesis system indifferent seasons. By this method could analysis of photosyntheticcharacteristicsfor different types of Prunus domestica×armeniaca in different seasons.[Result] Daily change of photosyntheticrate（Pn） for Prunus domestica×armeniaca in differentseasons showed a ＂double-peak＂ curve. The peak values were at 10：00 and16：00. The Pn of ‘Fengweihuanghou＇, ‘Konglongdan＇, ‘Weihou＇, ‘Weiwang＇ and‘Weidi＇ reached the maximum in July, theywere 13.75, 14.76, 12.96, 13.3, and 11.9μmol/（m^2·s）, respectively. The Pn of Prunus domestica×armeniaca reached minimumin August, they were 9.78, 10.71, 12.02, 10.43 μmol/（m^2·s）. The Pn overall average of ‘Konglongdan＇ was highest,it reached 12.65 μmol/（m^2·s）.The Pn overall average of ‘Weiwang＇ was lowest, it reached 11.31μmol/（m^2·s）. There were extremely significant positive correlation between the Pn and Gs（P0.01）. [Conclusion] Daily change of photosyntheticrate for Prunus domestica ×armeniaca in differentseasons showed a ＂double-peak＂ curve, showing significant phenomenon of ＂midday depression＂.The photosynthesis intensity of Prunus domestica ×armeniaca was strongest in July, and the photosynthesis intensity was weakest in August. ‘Konglongdan＇showed the strongest photosynthesis capacity, ‘Weihou＇ and ‘Weiwang＇, followed.There were highest correlation between the Pn and stoma conductance（Gs）.[目的]探讨不同生长季节杏李品种光合速率日变化规律,为干旱区杏李的丰产优质栽培提供理论依据。[方法]采用Li-6400XT便携式光合测定系统在5~8月测定不同杏李品种的光合生理参数,分析不同生长季节的光合速率日变化及品种间的光合作用特性和规律。[结果]杏李不同季节净光合速率(Pn)日变化曲线均呈"双峰"曲线,第一个峰值出现在10:00,第二个峰值出现在16:00。‘风味皇后’,‘恐龙蛋’,‘味厚’,‘味王’和‘味帝’均Pn日变化表现为7月份最大,分别为达13.75,14.76,12.96,13.3,11.9μmol/(m^2·s),8月份Pn日变化最小,分别是9.78,10.71,12.02,10.43μmol/(m^2·s)。‘恐龙蛋’的Pn总平均值最高,达12.65μmol/(m^2·s),‘味王’的Pn总平均值最低,仅有11.31μmol/(m^2·s),其他品种居中。杏李的Pn值与Gs均呈极显着正相关关系(P<0.01)。[结论]杏李不同季节净光合速率日变化均呈不对称"双峰"型,有明显地光合"午休"现象。7月份的光合作用强度最强,8月份最弱,5、6月份居中。‘恐龙蛋’表现出较强的光合能力,‘味厚’次之,‘味王’的光合能力较弱,其他品种居中。杏李的Pn值与气孔导度(Gs)相关性最高。

关 键 词：Prunus domestica × armeniaca Net photosynthetic rate Daily change of photosynthetic rate Environmental factors 

分 类 号：S662.3[农业科学—果树学]