华北农学报 ›› 2010, Vol. 25 ›› Issue (6): 160-163. doi: 10.7668/hbnxb.2010.06.030

所属专题: 西瓜

• 论文 • 上一篇    下一篇

西瓜及砧木根系分泌物对西瓜枯萎病菌的化感效应

郭尚1, 张作刚2, 田永强2, 王建明2, 姚艳平2   

  1. 1 山西省农业科学院蔬菜研究所 山西 太原 030031;
    2 山西农业大学农学院 山西 太谷 030801
  • 收稿日期:2010-10-10 出版日期:2010-12-28
  • 通讯作者: 张作刚(1966-),男,山西临猗人,副教授,硕士,主要从事植物病理学的教学与研究。
  • 作者简介:郭尚(1968-),男,山西大同人,副研究员,硕士,主要从事瓜类遗传育种栽培及相关机理研究。
  • 基金资助:
    国家星火项目(2008GA630003);山西农业大学科技创新基金(200034)

Allelopathic Effects of the Root Exudates in the Watermelon and Rootstocks on Fusarium oxysporum f.sp.niveum

GUO Shang1, ZHANG Zuo-gang2, TIAN Yong-qiang2, WANG Jian-ming2, YAO Yan-ping2   

  1. 1 Institute of Vegetables,Shanxi Academy of Agriculture Sciences,Taiyuan 030031,China;
    2 Agronomy College,Shanxi Agricultural University,Taigu 030801,China
  • Received:2010-10-10 Published:2010-12-28

摘要: 为了解砧木的抗病机理,提取砧木日本南瓜(RBNG)和野生西瓜(YSXG)及西瓜品种超甜花龙(CTHL)的根系分泌物,测定其对西瓜枯萎病菌的生物活性。结果表明,砧木对枯萎病菌孢子萌发和菌丝生长的相对抑制率显著高于西瓜品种;3种材料均引起菌丝体MDA含量先下降后上升,而砧木引起下降的幅度较小;3种材料均引起菌丝体SOD活性先上升后下降,而砧木引起下降的速度较快;砧木引起菌丝体POD活性呈缓慢下降趋势,而西瓜品种则引起先快速上升后迅速下降;3种材料引起菌丝体可溶性蛋白含量均呈下降趋势,而砧木在前期引起下降的速度较快;砧木引起菌丝体可溶性糖含量呈直续下降趋势,而西瓜品种却引起先下降后上升。

关键词: 西瓜, 砧木, 根系分泌物, 西瓜枯萎病菌, 化感效应

Abstract: To understand disease-resistant mechanism of the rootstock, the root exudates in two rootstocks RBNG, YSXG and watermelon CTHL were collected and their effects on Fusarium oxysporum f.sD.niveum were tested.The re. suits indicated that the root exudates in two rootstocks had stronger inhibitory activity to spore germinations and mycelial growths than that in watermelon;Three kinds of root exudates could enhance the content of MDA in the mycelium, SOD activities.POD activities and soluble protein descended treated with the root exudates in the rootstocks and wa. termelon.But the decreased radio of the fornler was lager than the latter.Besides.the content of soluble sugar in the mycelium decreased treated with the root exudates in the rootstocks and submited the tendency of drop first and in. creased again treated with the root exudates in the watermelon.

Key words: Watermelon, Rootstock, Root exudate, Fusarium oxysporum f.sp.niveum, Allelopathic effect

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引用本文

郭尚, 张作刚, 田永强, 王建明, 姚艳平. 西瓜及砧木根系分泌物对西瓜枯萎病菌的化感效应[J]. 华北农学报, 2010, 25(6): 160-163. doi: 10.7668/hbnxb.2010.06.030.

GUO Shang, ZHANG Zuo-gang, TIAN Yong-qiang, WANG Jian-ming, YAO Yan-ping. Allelopathic Effects of the Root Exudates in the Watermelon and Rootstocks on Fusarium oxysporum f.sp.niveum[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(6): 160-163. doi: 10.7668/hbnxb.2010.06.030.

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