DU Hui,WANG Chunming,GUO Jianguo,et al.Study on Correlation Between Sporangia Dispersal Dynamics of Plasmopara viticola and Disease State in Vineyard[J].Northern Horticulture,2016,40(02):113-116.[doi:10.11937/bfyy.201602030]
葡萄霜霉菌孢子囊扩散动态与田间霜霉病扩展的相关性研究
- Title:
- Study on Correlation Between Sporangia Dispersal Dynamics of Plasmopara viticola and Disease State in Vineyard
- 文献标志码:
- A
- 摘要:
- 以兰州、天水地区的葡萄为试材,利用孢子捕捉仪对2个地区葡萄生长期田间葡萄霜霉病菌孢子囊数量进行了观测,同时定点系统调查了田间霜霉病发生情况,并分析二者之间的相关性。结果表明:甘肃葡萄霜霉病菌孢子囊始见期一般为6月下旬或7月初,7—9月为扩散期,7月下旬至8月下旬为扩散盛期,9月以后进入快速消退期;从田间捕捉到霜霉病菌孢子囊开始,若环境条件适合,7 d后霜霉病陆续发生;葡萄生长期孢子囊扩散量与田间病情相关系数为 0.90以上,葡萄霜霉菌孢子囊扩散量与田间病情扩展呈显著正相关。
- Abstract:
- Taking grapes in Lanzhou and Tianshui area as materials,sporangia of Plasmopara viticola dispersal was observed using the spore-trapping machine and the disease state was investigated during the grape growing season in Tianshui and Lanzhou area.The results showed that the sporangia first appeared in the late June or early July,and kept dispersal from July to September.From the end of July to the late August the dispersal reached the peak.While it decreased rapidly in September.The onset of disease was observed 7 days after the first appearance of sporangia when the climatic conditions were suitable for disease.The correlation coefficient was more than 0.90.The dynamics of sporangia dispersal had significantly positive correlation with the disease levels.
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备注/Memo
第一作者简介:杜蕙(1970-),女,甘肃临洮人,硕士,研究员,现主要从事植物病害等研究工作。E-mail:dh0928@163.com. 基金项目:公益性行业(农业)科研资助项目(201203035);甘肃省科技支撑计划资助项目(1204NKCA099)。