关键词：
枣(Ziziphus jujuba Mill.);抗寒性;鉴定
摘 要：
以二年生新疆地方枣(Ziziphus jujuba Mill.)为研究对象,设置不同低温胁迫处理,测定一年生枝条内的相对电导率、可溶性糖和可溶性蛋白质含量及保护酶(SOD、POD、CAT)活性的变化,比较枣的抗寒性差异。结果表明,随着处理温度的降低,各品种枣枝条的相对电导率逐渐升高;可溶性糖和可溶性蛋白质含量在5～-10℃略微上升,随后其含量较对照有明显提高,直至后期-25℃一直保持在较高水平;枝条中的SOD、POD和CAT活性均呈先上升后下降的变化趋势。在5～-25℃,库尔勒小枣的相对电导率始终低于其他品种,而可溶性糖和可溶性蛋白质含量、保护酶(SOD、POD和CAT)活性在整个处理期间高于其他品种。6个枣抗寒性比较结果表明,库尔勒小枣抗寒能力最强,喀什葛尔小枣抗寒能力最弱。
译 名：
Identification of freezing resistance in local jujube germplasm in south Xinjiang
作 者：
CHEN Yan;MA Hong-yu;YU Rong-rong;CHEN Xiao-yi;BAO Jian-ping;College of Plant Science,Tarim University;Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin;The National and Local Joint Engineering Laboratory of High Efficiency and Superior-Quality Cultivation and Fruit Deep Processing Technology of Characteristic Fruit Trees in South Xinjiang;
单 位：
CHEN Yan%MA Hong-yu%YU Rong-rong%CHEN Xiao-yi%BAO Jian-ping%College of Plant Science,Tarim University%Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin%The National and Local Joint Engineering Laboratory of High Efficiency and Superior-Quality Cultivation and Fruit Deep Processing Technology of Characteristic Fruit Trees in South Xinjiang
关键词：
jujube(Ziziphus jujuba Mill.);;cold resistance;;identification
摘 要：
Taking the two-year-old local jujube(Ziziphus jujuba Mill.) germplasm in south Xinjiang as test material,the relative conductivity rate, content of soluble sugar and soluble proteins and activities of SOD, POD, CAT of isolated brunches of two-year-old local jujube tree under different low temperature treatments were measured and identified. The result showed that with the decreasing temperature,the relative conductivity rate was rising. Content of soluble proteins and soluble sugar exhibited a slightly uptrend during 5～-10 ℃, subsequently there was a remarkable difference between treatment group and control in the content of soluble proteins and soluble sugar, when the treatment temperature adding to-25 ℃, its content still remained at this high level. After low temperature stress treatment, there was a remarkable difference between treatment group and control in the content of soluble sugar, and then exhibited a slightly uptrend as the treatment time going on. The activity of SOD, POD and CAT enhanced before it decreased under cold stress. During the whole process, the relative conductivity rate in Kuerlexiaozao jujube was lower than that of others during 5～25 ℃, while Content of soluble proteins and soluble sugar and activities of SOD, POD and CAT in Kuerlexiaozao jujube were higher than that of others. According to the comparation of the cold resistance of six local jujube germplasm in south Xinjiang,cold resistance of Kuerlexiaozao jujube was the strongest among the six apple cultivars,and Kashigeerxiaozao jujube was the weakest.
