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中国沙漠 ›› 2006, Vol. 26 ›› Issue (6): 1041-1045.

• 生物与生态 • 上一篇    下一篇

花椒品种抗冻性比较研究

王有科1,2, 刘 冰3, 郭凤霞2   

  1. 1.甘肃农业大学 林学院, 甘肃 兰州 730070; 2.甘肃农业大学 生命科学技术学院, 甘肃 兰州 730070; 3.甘肃林业职业技术学院 森管系, 甘肃 天水 741020
  • 收稿日期:2005-08-25 修回日期:2005-10-11 出版日期:2006-12-20 发布日期:2006-12-20

Comparison Studies on the Freezing Resistance in Zanthoxylum bungeanum

WANG You-ke1,2, LIU Bing3, GUO Feng-xia2   

  1. 1.Forestry College of Gansu Agricultural University, Gansu 730070, China; 2.The Forest Resources Management Department of Gansu Forestry Professional Technology College, TianShui 741020, Gansu, China;3.College of Life Sciences and Technology, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2005-08-25 Revised:2005-10-11 Online:2006-12-20 Published:2006-12-20

摘要: 秦安1号、油椒和大红袍是甘肃省花椒主产区的主要栽培品种。对其一年生休眠枝在不同低温(0~-40℃)处理不同时间(24~72 h),通过测定相对电导率、超氧物岐化酶(SOD)活性和丙二醛(MDA)含量,对花椒品种休眠枝的抗冻性进行了比较研究。结果表明,各品种休眠枝的相对电导率和MDA含量从低到高均依次为:秦安1号<油椒<大红袍,品种间差异性均达到显著水平(P<0.05);SOD活性秦安1号略高于油椒,二者差异性虽未达到显著水平,但均显著高于大红袍(P<0.01);相同温度下,3品种休眠枝的相对电导率、MDA含量均随低温持续时间的延长而升高,大红袍休眠枝上升更加明显。SOD活性均随处理时间的延长而降低。引起各花椒品种休眠枝低温伤害的临界温度范围为-15~-20℃。从相对电导率、MDA含量和SOD活性的变化综合分析,供试的3个花椒品种中,秦安1号的抗冻性最强,油椒次之,大红袍抗冻性最弱。

关键词: 花椒, 相对电导率, 丙二醛, 超氧物岐化酶, 抗冻性

Abstract: Qingan No.1, Youjiao and Dahongpao are main Zanthoxylum bungeanum cultivars in Gansu province. One-year-old dormant shoots of the above three cultivars were used to determine relative conductivity, MDA concentration and SOD activities under different low temperatures (0~-40 ℃) for different time (24~72 h). The result showed that the relative conductivity and MDA varied in the same trend in the three cultivars, and their levels are arrayed as Qingan No.1Youjiao>Dahongpao.

Key words: Zanthoxylum bungeanum, the relative conductivity, MDA, SOD activity, freezing resistance

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