摘要
试验说明，花生在花针盛期以前为花生矮化病毒（ＰＳＶ）易感病时期，随后抗性有所增强。ＰＳＶ可以通过花生种传，但种传率很低，仅０．０２％。不同种类蚜虫对ＰＳＶ传毒效率有明显差异，在测定的４种蚜虫中，豆蚜（Ａｐｈｉｓｃｒａｃｃｉｖｏｒａ）传毒效率高，其他种类蚜虫传毒效率低。１９８８～１９９４年在河南开封田间观察说明，由ＰＳＶ引起的花生普通花叶病毒病在花生上流行受花生苗期和花针期田间迁飞蚜虫数量和花生苗期降雨量的影响，并根据上述３因素７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９８．５７％左右，经相关检验，估计值与实侧值达极显著水平。
Tests showed that peanut plants were more susceptible to peanut stunt virus (PSV) infection in seedling and early and middle of flowering and pegging stages. PSV were transmitted at a rate of 0.02% through the seeds collected from PSV infected peanut plants. The Aphis cracovora , Aphis glycines and Myzus persicae transmitted the virus in a nonpersistent manner. On the basis of observation in Kaifeng region, Henan province from 1988～1994, epidemic level of PSV on peanut plants was affected by flying aphid population in the peanut fields and rainfall during peanut seedling stage. On the basis of the data of PSV occurrence in seven years, an equation was established for the disease forecasting.
出处
《中国油料作物学报》
CAS
CSCD
北大核心
1998年第1期78-82,共5页
Chinese Journal of Oil Crop Sciences
基金
国家自然科学基金
"九五"农业部项目
国际半干旱所资助
