Haack confirmed his assumption of gradual differences in resistance by making artificial inoculations on infected, less infected and healthy trees . Haack通過在被侵染,較少侵染和健康樹木上實行人工接種,證實了他關于在抗性方面程度漸次不同的假設。
Haack confirmed his assumption of gradual differences in resistance by making artificial inoculations on infected , less infected and healthy trees Haack通過在被侵染,較少侵染和健康樹木上實行人工接種,證實了他關于在抗性方面程度漸次不同的假設。
The resistance of 7 grapevine varieties to plasmopara viticola was estimated by natural infection and inoculation on leaf discs in vitro , as well as artificial inoculation on plants in the field , in the meantime , the regular of p . viticola and three biochemical contents were also determined 摘要利用7個酒葡萄品種對霜霉病抗性進行了鑒定,并研究了不同感病性酒葡萄品種霜霉病的發生情況及霞多麗品種葉片內三項生化指標的變化。