不同枣砧木1年生枝抗寒性研究  

Study on the cold resistance of annual shoots of different jujube rootstocks

作　　者：樊丁宇[1,2] 靳娟 杨磊 马凯[1,2] 艾沙江.买买提 韩立群[1,2] 郝庆 FAN Dingyu;JIN Juan;YANG Lei;MA Kai;Aisajan Mamat;HAN Liqun;HAO Qing(Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, Xinjinag, China;Scientific Observing and Experimental Station of Pomology （Xinjiang）, Urumqi 830091, Xinjinag, China)

机构地区：[1]新疆农业科学院园艺作物研究所,新疆乌鲁木齐830091 [2]农业部新疆地区果树科学观测实验站,新疆乌鲁木齐830091

出　　处：《经济林研究》2018年第2期195-199,共5页Non-wood Forest Research

基　　金：新疆维吾尔自治区自然科学基金项目"红枣木质化枣吊形成机理及调控途径研究"(2014211B036);新疆维吾尔自治区林业科技专项资金项目"巴楚县红枣标准化生产示范园建设";新疆维吾尔自治区重点研发专项"新疆红枣产业提质增效关键技术研发与应用"(2017B01002)

摘　　要：为研究枣不同砧木的抗寒性,从而为新疆枣砧木的选择提供理论依据。以收集到的6份枣砧木的1年生枝条为试材,采用人工模拟低温环境的方法对其进行低温处理,测定不同砧木的相对电导率、可溶性蛋白、可溶性糖和丙二醛含量,并应用电导法配合Logistic方程计算供试砧木的半致死温度LT_(50)。6份枣砧木的相对电导率、丙二醛含量随着胁迫温度的下降而升高,可溶性糖、可溶性蛋白含量随着胁迫温度的下降显著升高。在本实验温度处理范围内,S+灰、B+灰枝条的可溶性糖、可溶性蛋白含量均显著高于灰枣自根砧。6份枣砧木抗寒性差异较大,除毛叶枣外,LT_(50)均在-19^-24℃之间,抗寒性由强到弱依次为:酸枣、扁核酸、S+灰、B+灰、灰枣、毛叶枣。砧木嫁接可通过提高可溶性糖、可溶性蛋白含量,降低相对电导率和丙二醛含量来提高枣树的抗寒性。In order to provide a theoretical basis for the selection of jujube rootstock by making clear the cold resistance of different rootstocks in xinjiang. The annual shoots of six jujube shoots were used as the tested materials to determinate the effect of low temperature stress on the shoots using the indexes such as relative conductivity, soluble protein, soluble sugar and malondialdehyde content in artificial simulation low temperature environment. The semi lethal temperatures （LTs0） of the tested materials were calculated by the conductance method with application of Logistic equation. As the temperature decreased, the relative conductivity and MDA content of six cultivars increased, soluble sugar and soluble protein content increased. The soluble sugar, soluble protein content of grafted Huizao jujube branches were significantly higher than that of self-rooted rootstock in a certain temperature range. There was obvious difference in cold resistance among these six cultivars. The LT50ranged from -19 ℃ to -24 ℃ except for Maoyezao, and the order of cold resistance was Suanzao 〉 Bianhesuan 〉 Huizao grafted onto Suanzao 〉 Huizao grafted onto Bianhesuan 〉 Huizao 〉 Maoyezao. Rootstock grafting can improve the cold resistance of jujube by increasing soluble sugar, soluble protein content and reducing relative conductivity and MDA content.

关 键 词：枣 砧木 抗寒性 半致死温度 

分 类 号：S665.1[农业科学—果树学]