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应用生态学报 ›› 2000, Vol. ›› Issue (4): 612-614.

• 研究论文 • 上一篇    下一篇

梨锈病病菌生态位研究

李瑶, 承河元   

  1. 安徽农业大学园艺系, 合肥230036
  • 收稿日期:2000-01-31 修回日期:2000-03-28
  • 通讯作者: 李瑶,女,1949年生,副教授,主要从事果树蔬菜病害治理研究,发表论文10多篇.
  • 基金资助:
    安徽省教委基金资助项目(94JL0051)

Niche breadth of Gymnosporangium haraeanum

LI Yao, CHENG Heyuan   

  1. Department of Horticulture, Anhui Agricultural University, Hefei 230036
  • Received:2000-01-31 Revised:2000-03-28

摘要: 安徽主栽梨树品种对锈病菌的抗性差异显著,而对感病品种以病情指数和病叶数为依据的锈菌寄主生态位进行研究,结果生态位宽度依次是0.7555和0.7951;各品种水平空间和垂直空间生态位宽度均接近于1.此研究表明梨锈病菌是以随机扩散传播侵染的.

关键词: 梨树, 梨锈病, 梨锈菌, 抗性, 生态位宽度

Abstract: The resistant difference among different main pear cultivars in Anhui Province to pear rust caused by Gymnosporangium haraeanum was significant. According to disease index and diseased leaves of susceptible cultivars, the niche breadths of hosts were 0.7555 and 0.7951, respectively. The niche breadths of horizontal and vertical space of each cultivar were approximate to 1. The result shows that the infection of G. haraeanum was a random distribution.

Key words: Pear, Pear rust, Gymnosporangium haraeanum, Resistance, Niche breadth