摘要
近年广州地区观赏植物疫病发生普遍。1987~1992年,从九重葛、长春花、忍冬、白兰、五彩椒、米兰及云南黄素馨等观赏植物上分离获得39个疫霉菌株。根据孢子囊形态、脱落性、有性器官的形成、生长温度及致病性等,将其鉴定为寄生疫霉(PhytophthoraparasiticaDast,),辣椒疫霉(P.capsiciLconian.)和棕榈疫霉(P.palmivora(Butl.)Butlcr.)。对这3种疫霉分别作了种的描述。试验结果表明,甲霜灵(瑞毒霉)及甲霜灵锰锌(瑞毒霉锰锌)防病效果比较显著。
The phytophthora diseases of ornamental plants have been prevalent in Guangzholl inrecent years,During the years of l987-1992,39 phytophthora isolates were obtained from thefollowing ornamental plants:Bougainvillea glabra(number of isolates:7),Catharanthus roseus(5),Lonicera japonica(5),Michelia alba(6),Capicum frutescens(5)Aglaia odorata(6)andJasminum mesmy(5).According to the morphology and caducity of their sporangia,the formation and mating type of their sexual organs,their growth temperature,and their infectivity to thehost plants,the 39 isolates were identified as P. parasitica(17),P,capsici 11 and 11 P.palmivora(ll).Metalaxyl and Ridomil-Mz were found in field tests to be quite effective in controlling the diseases.
出处
《热带作物学报》
CSCD
1996年第2期100-105,共6页
Chinese Journal of Tropical Crops
关键词
观赏植物
疫霉属
交配型
防治
Ornamental plant Phytophthora diseases;P. parasitica;P. capsici P. palmivora;Chemical control