葡萄树干疾病对来自受感染的根茎母块产生的干的不良影响
Wynand Jacobus van Jaarsveld1,2, Lizel Mostert1, Jacobus Johannes Hunter2
1Department of Plant Pathology, Stellenbosch University, Matieland, South Africa.
Pest management science
|December 5, 2025
概括
母块年龄对葡萄树木质量的影响最小. 然而,母葡萄中的葡萄树干疾病 (GTD) 存在感染风险,降低了繁殖材料的质量和葡萄园的寿命. 对GTD的管理是必不可少的.
科学领域:
- 葡萄种植 葡萄种植 葡萄种植
- 植物病理学 植物病理学
- 园艺科学 园艺科学
背景情况:
- 葡萄树干疾病 (GTD) 威胁着葡萄园的长寿和繁殖材料的质量.
- 确定更换母体块的最佳年龄以减轻GTD风险至关重要.
- 这项研究评估了母块年龄对葡萄藤生理学,形态学和感染状况的影响.
研究的目的:
- 为了评估母体区块年龄对葡萄藤生理和形态特征的影响.
- 确定母葡萄树及其后代的GTD病原体感染状况.
- 了解母体块年龄,GTD患病率和传播材料质量之间的关系.
主要方法:
- 评估了母葡萄树和一岁的生理和形态特征.
- 量化GTD病原体的发病率和DNA度在母葡萄树头和树干中.
- 采用多变量分析,将GTD感染与葡萄藤和甘参数联系起来.
主要成果:
- 母亲区块年龄对甘生理学和形态学的影响很小.
- 在母葡萄树头 (高达90%),主要是Botryosphaeriaceae和Celotheliaceae中,GTD发病率很高.
- 一岁的树表现出较低的GTD率,但母葡萄树的污染是显而易见的;特定的病原体影响了树的形态,粉和含量.
结论:
- 母块年龄不是与GTD相关的甘质量下降的主要驱动因素.
- 在母葡萄头中高GTD流行率对系统感染和传播材料质量的降低具有重大风险.
- 在根茎母块中对GTD病原体的有效监测和管理对于保持繁殖物质的健康和确保葡萄园长寿至关重要.
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