华北农学报 ›› 2000, Vol. 15 ›› Issue (2): 67-71. doi: 10.3321/j.issn:1000-7091.2000.02.015

所属专题: 西瓜

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西瓜野生种质幼苗耐冷性的生理生化特性与遗传研究

许勇, 张海英, 康国斌, 王永健   

  1. 国家蔬菜工程技术研究中心, 北京 100089
  • 收稿日期:1999-03-18 出版日期:2000-03-28
  • 作者简介:许勇(1965- ),男,副研究员,博士,主要从事蔬菜遗传育种与抗性分子生物学的研究工作。
  • 基金资助:
    北京市自然科学基金重点项目

Studies on Physiological and Biochemical Characteristics and Inheritance of Chilling Tolerance of Seedlings on Watermelon Wild Germplasm

XU Yong, ZHANG Haiying, KANG Guobin, WANG Yongjian   

  1. National Engineering Research Center for Vegetable, Beijing 100089, China
  • Received:1999-03-18 Published:2000-03-28

摘要: 西瓜野生耐冷材料PI482322幼苗在偏低温(12±1)℃、光流密度140μE·m-2·s-1条件下表现出较强的耐冷性。在低温光照条件下,西瓜幼苗叶片内保护酶SOD,CAT的活性均下降,但野生耐冷材料PI482322较冷敏品种97103的下降幅度小,体内活性氧的积累少,是其表现出耐冷性的主要生理原因。野生耐冷材料PI482322的耐冷性由一个单显性基因所控制。

关键词: 西瓜, 耐冷性, 生理生化特性, 遗传

Abstract: Watermelon wild germplasm (Citrullus lanatus var citroides) PI482322hadhigh chilling tolerance under the condition of (12±1)℃ temperature and 140μE·m-2·s-1 PFD (photon flux density). As the time of low temperature treatment increased, the activities of SOD and CAT in watermelon seedling leaves decreased. Comparing with these of chilling sensitive cultivar 97103, the decrement of activities of SOD and CAT of wild chilling resistance germplasm PI482322 was smaller, and the accumulation content of active oxygen in the seedling was less. These were main physiological causes of cold resistance. The chilling tolerance of PI482322 was controlled by one dominant gene.

Key words: Watermelon (Citrullus lanatus), Chilling tolerance, Physiological and biochemical characteristic, Inheritance

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引用本文

许勇, 张海英, 康国斌, 王永健. 西瓜野生种质幼苗耐冷性的生理生化特性与遗传研究[J]. 华北农学报, 2000, 15(2): 67-71. doi: 10.3321/j.issn:1000-7091.2000.02.015.

XU Yong, ZHANG Haiying, KANG Guobin, WANG Yongjian. Studies on Physiological and Biochemical Characteristics and Inheritance of Chilling Tolerance of Seedlings on Watermelon Wild Germplasm[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2000, 15(2): 67-71. doi: 10.3321/j.issn:1000-7091.2000.02.015.

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