摘要
据1985～1990年在密云县试验观察,黄瓜花叶病毒(CMV)在花生上流行受病毒种传率、苗期蚜虫发生数量及苗期温度和雨量的影响。花生苗期和花针初期为易感病时期,随后抗性有所增强,但不明显。苗期和花针期发病植株,CMV种传率最高,之后带毒率有所下降。CMV种传率高低与病害流行关系,在同一年份呈极显著正相关关系,而在年度间未达显著水平。花生田间蚜虫发生盛期与病害发生高峰期是吻合的,蚜虫发生数量与病害流行关系显著。根据花生种传率和苗期蚜虫发生数量两因素6年次资料配合的病害流行预测式,其回报可靠度的置信范围在93%左右。
On the basis of observation in Miyun county,Beijing from 1985～1990,epiphytotics of cu
cumber mosaic virus(CMV)on peanut plants was affected by rate of CMV transmission through
peanut seed,aphid population and activity,rainfall and temperature during peanut seedling
stage.Tests showed that peanut plant was more susceptible to CMV infection in seedling and
early flowerring and pegging stages.CMV seed transmission was higher in the seeds from the
peanut plants infected at seedling,flowerring and pegging stages.Rates of CMV seed transmis
sion affected CMV spread in different peanut fields.Peak of aphid occurrence was correlated with
peak of disease spread in the fields.Population of aphid on peanut fields in the early growing sea
son was significantly correlated with epiphytotic levels of the CMV disease.On basis of the data
of CMV seed transmission and aphid population at seedling stage in six years,an equation is es
tablished for the disease forecasting.
出处
《植物病理学报》
CAS
CSCD
北大核心
1993年第4期355-360,共6页
Acta Phytopathologica Sinica
