Germination characteristics and multiple regression analysis of sporangia, Plasmopara viticola

被引：0

作者：

Guo Minghao ^{[1
]}

Li Hua ^{[1
]}

Yang Yongfeng ^{[1
]}

机构：

[1] NW A&F Univ, Coll Enol, Yangling 712100, Shaanxi, Peoples R China

来源：

Proceedings of the Fourth International Symposium on Viticulture and Enology | 2005年

关键词：

Plasmopara viticola; sporangia; germination; polynomial; model;

D O I：

暂无

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Germination of sporangia from Plasmopara viticola to release zoospores is crucial to conduce new infections and disease epidemic. Under incubation conditions of different temperatures and wetness duration,release of zoospores from sporangia was observed microscopically. The results showed that sporangia can germinate between 5 to 27 degrees C, optimum is 15 to 25 degrees C, germination of sporangia can occur within 2 hours and it can not germinate when temperatures below 4 degrees C and above 28 degrees C. GLM programme of SAS was applied to progress trend analyis and optimize polynomial regression model. The coincidence degree of optimal model is satisfactory, F=65.03 (p < 0.0001), R-2=0.906417. The prediction accuracy is 84.53% and accordingly provide theoretical foundation and reference for the disease prediction and reasonable fungicide spray of grape downy mildew.

引用

页码：59 / 63

页数：5