首页> 外文学位 >Studies on effects of crop rotation and tillage on blackleg disease (Leptosphaeria maculans) in canola (Brassica napus), dispersal patterns of L. maculans spores, and effects of temperature and relative humidity on infection of canola cotyledons.
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Studies on effects of crop rotation and tillage on blackleg disease (Leptosphaeria maculans) in canola (Brassica napus), dispersal patterns of L. maculans spores, and effects of temperature and relative humidity on infection of canola cotyledons.

机译:轮作和耕作对油菜(Brassica napus)中黑腿病(Leptosphaeria maculans)的影响,黄斑胶乳孢子的散布方式以及温度和相对湿度对油菜子叶感染的影响的研究。

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摘要

Leptosphaeria maculans (anamorph: Phoma lingam ), the causal agent of Blackleg of canola, is an important disease affecting the crop across western Canada. The disease could be significantly reduced when canola was rotated with wheat and flax, and was grown on tilled plots. Tillage showed a significant effect on decreasing the disease when it was performed with a single-crop rotation; however, it did not with a two-crop rotation. Survival of Blackleg pathogen on canola stubble significantly decreased within nine months. With increase of soil depth, viability of the pathogen significantly decreased. The pathogen had more difficulty in surviving in clay than in loam and sand. The optimum relative humidity and temperature were 70% and 18/20°C (night/day). (Abstract shortened by UMI.)
机译:油菜黑斑病的致病病原体是Leptosphaeria maculans(变形:Phoma lingam),是影响加拿大西部作物的重要疾病。当双低油菜籽与小麦和亚麻一起旋转并种植在耕地上时,可大大减轻该病。单作轮作耕作对减少病害有明显的影响。但是,它没有进行两次修剪旋转。黑腿病病原体在低芥花菜子残茬上的存活率在九个月内显着下降。随着土壤深度的增加,病原体的生存能力显着下降。该病原体在黏土中生存的难度比在壤土和沙子中的生存困难更大。最佳相对湿度和温度为70%和18/20°C(夜/日)。 (摘要由UMI缩短。)

著录项

  • 作者

    Guo, Xiaowei.;

  • 作者单位

    University of Manitoba (Canada).;

  • 授予单位 University of Manitoba (Canada).;
  • 学科 Agriculture Plant Pathology.
  • 学位 M.Sc.
  • 年度 2004
  • 页码 122 p.
  • 总页数 122
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物病理学;
  • 关键词

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