东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

葡萄霜霉菌孢子囊扩散动态及与田间病情的相关性

ISSN号：1009-9980
期刊名称：《果树学报》
时间：0
分类：S663.1[农业科学—果树学;农业科学—园艺学]
作者机构：[1]石河子大学绿洲农作物病害防控重点实验室,新疆石河子832000, [2]新疆农业科学院,乌鲁木齐830006
相关基金：公益性行业科研专项（201203035）石河子重大农业科技项目（2009031）

作者：吉丽丽[1], 李海强[2], 任毓忠[1], 祁立敏[2], 赵宝龙[1], 李国英[1], 李春[1]

关键词：葡萄霜霉菌, 葡萄霜霉病, 孢子囊扩散动态, 孢子捕捉, 与病情相关性, Plasmopara viticola, Downy mildew of grape, The dynamics of sporangium, Spore-trapping, Correlation with disease

中文摘要：

病原体的数量和密度是病害发生和流行的重要因素之一，也是病害预测预报的重要依据。葡萄霜霉病是新疆葡萄上的一种重要病害，有必要对其病菌的扩散动态进行研究，从而对病害进行预测。采取孢子捕捉和田间系统调查相结合的方法，研究了葡萄霜霉菌孢子囊的时空扩散动态，并分析其与田间病情的相关性。结果表明，葡萄霜霉菌孢子囊一般在6月上中旬开始出现．7月下旬到9月上旬为高峰期，随后进入消退期。其孢子囊通常在葡萄冠层以下分布较多，一天24h内都可捕到孢子囊，但一般8：00左右和20：00左右捕捉量最多。孢子囊的扩散与温度呈正相关，与湿度和降雨量呈负相关。在P〈O．01水平下，霜霉病菌孢子囊扩散动态与5d后病害的发生呈显著正相关。

英文摘要：

Airborne sporangium concentration of Plasmopara viticola is one of the key/actors ot grape downy mildew that has become more prevalent in Xinjiang. This study was initiated with the objective to gain a better understanding of the epidemiology based on relationships between airborne sporangium con- centrations and disease incidence in field. Environmental conditions, airborne sporangium concentrations of Plasmopara viticola, and severity of grape downy mildew were monitored for 3 years in field in Xinjiang. The results showed that predominant sporangia flew within the vineyard canopy. The daily dynamics of sporangium diffusion revealed dual-peak at 8：00 am and 8：00 pm, and higher at 8：00 pro. At P〈0.01 level, airborne sporangium concentrations were positively correlated with severity of grape downy mildew and air temperature, and negatively with humidity and rainfall in field. The sporangium initial diffusion of grape downy mildew was observed in early June, and its epidemic from June to September, and its daily peak were at 8：00 am and 8：00 pm in Shihezi of Xinjiang area. Airborne sporangium concentration of Plas- mopara viticola was a significant positive correlation with disease incidence in field.

同期刊论文项目