三种不同需冷量桃品种休眠诱导期生理变化  

Physiological Changes of Peach Cultivars with Three Different Chilling Requirement during Dormancy Induction

作　　者：文滨滨 张新昊 陈修德[1,2] 高东升 朱翠英[1] 肖伟 WEN Bin-bin;ZhANG Xin-hao;CHEN Xiu-de;GAO Dong-sheng;ZHU Cui-ying;XIAO Wei(College of Horticulture Science and Engineering/Shandong Agricultural University, Tai’an 271018, China;Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency,Tai’an 271018,China)

机构地区：[1]山东农业大学园艺科学与工程学院,山东泰安271018 [2]山东省果蔬优质高效生产协同创新中心,山东泰安271018

出　　处：《山东农业大学学报（自然科学版）》2019年第1期1-5,74,共6页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：山东省现代农业产业技术体系果品创新团队项目(SDAIT-06-01)

摘　　要：以三个不同需冷量的桃品种‘常绿桃’(无)、‘春捷’(102～120 C.U.)、‘青州蜜桃’(1200 C.U.)嫁接在同一桃树砧木‘山桃’上为实验材料,研究不同需冷量桃叶片在自然休眠诱导期(8月20日-11月20日)的生理变化。结果表明:在自然休眠诱导期,桃叶片的抗氧化保护酶活性、光合速率、可溶性糖和淀粉含量发生显著变化。随着休眠诱导的发展,超氧化物歧化酶(SOD)活性一直升高,在休眠诱导期后期(10月10日)‘常绿桃’高于‘春捷’和‘青州蜜桃’,过氧化物酶(POD)活性下降,不同需冷量桃无显著差异,过氧化氢酶(CAT)活性呈双峰变化且常绿桃峰值低于‘春捷’和‘青州蜜桃’;净光合速率呈下降趋势但常绿桃高于‘春捷’和‘青州蜜桃’且峰值分别是‘春捷’和‘青州蜜桃’的1.96和3.13倍;可溶性糖含量降低、淀粉含量增加但‘常绿桃’可溶性糖含量高于‘春捷’和‘青州蜜桃’、淀粉含量低于‘春捷’和‘青州蜜桃’。以上结果表明,‘常绿桃’在休眠诱导期保护酶活性、光合速率和可溶性糖含量均高于‘春捷’和‘青州蜜桃’,淀粉含量低于‘春捷’和‘青州蜜桃’。Physiological changes of peach leaves in dormancy induction period(20^th August-20^th November)were studied with three different chilling requirement peach cultivars‘evergreen peach’(no),‘Chunjie’(102~120 C.U.),‘Qingzhou’Peach(1200 C.U.)was grafted on the same peach rootstock.The result indicated that the activities of antioxidant protective enzymes,photosynthetic rate,soluble sugar and starch content in peach leaves all significantly changed during the natural dormancy induction.Along with dormancy developing,the activity of superoxide dismutase(SOD)increased and in the late dormancy induction period(10th October),the evergreen peach was higher than that of‘Chun Jie’and‘Qingzhou peach’,the activity of peroxidase(POD)decreased and there was no significant difference between peach cultivars with different chilling requirement,the activity of catalase(CAT)changed as double Peak and the peak value of‘evergreen peach’were lower than dormant peach;the net photosynthetic rate decreased but the value of everygreen peach was higher than‘Chun Jie’and‘Qingzhou peach’and the peak was 1.96 and 3.13 times of‘chunjie’and‘qingzhou’peach respectively.The content of soluble sugar decreased and the starch content increased but the content of soluble sugar of evergreen peach was higher than‘Chun Jie’and‘Qingzhou peach’,starch content was lower than them.The above results showed that the protective enzymes activity,photosynthesis rate and soluble sugar content was higher than‘Chun Jie’and‘Qingzhou peach’,the starch content was lower than‘Chun Jie’and‘Qingzhou peach’.

关 键 词：桃 自然休眠诱导 生理变化 需冷量 叶片 

分 类 号：S662.1[农业科学—果树学]