HUBEI AGRICULTURAL SCIENCES ›› 2019, Vol. 58 ›› Issue (6): 97-100.doi: 10.14088/j.cnki.issn0439-8114.2019.06.021

• Horticulture & Local Products • Previous Articles     Next Articles

Identification of freezing resistance in local jujube germplasm in south Xinjiang

CHEN Yan1, MA Hong-yu1, YU Rong-rong1, CHEN Xiao-yi1, BAO Jian-ping1,2,3   

  1. 1.College of Plant Science,Tarim University,Alar 843300,Xinjiang,China;
    2.Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin,Alar 843300,Xinjiang,China;
    3.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,Alar 843300,Xinjiang,China
  • Received:2018-09-30 Online:2019-03-25 Published:2019-12-03

Abstract: 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.

Key words: jujube(Ziziphus jujuba Mill.), cold resistance, identification

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