安徽省小麦上两个孢囊线虫群体的鉴定  

Identification of Two Cyst Nematode Populations Parasitizing Wheat in Anhui,China

作　　者：郑经武[1] 林茂松[1] 程瑚瑞[1] 方中达[1] 

机构地区：[1]南京农业大学植物保护学系,南京210095

出　　处：《江苏农业学报》1996年第1期31-35,共5页Jiangsu Journal of Agricultural Sciences

摘　　要：1993年,在安徽省固镇县和淮北市郊小麦根土中采集到两个孢囊线虫群体。其孢囊均呈柠檬形,阴门膜孔为双膜孔型,无下桥,有泡状突,阴门裂较短,属 Mulvey 所分5个组的第三组。这两个群体中的2龄幼虫口针平均长24μm,透明尾与口针长度的比值约为1.6;在扫描电镜下观察唇区类型,属 Stone 划分的6个类型的第四类;侧区有4条侧线形成3条侧带,两条外带与横纹交叉呈网格状。上述特征均与燕麦孢囊线虫(Heterodera avenae)相吻合,故将这两个群体鉴定为燕麦孢囊线虫。Two cyst nematode populations in wheat were collected from Anhui,China,and i- dentified by light microscopy and scanning electron microscopy(SEM)in 1993.The cysts of both populations,with posterior protuberance,lemon shaped,vulval silt short,bifenestrate,bullae pre- sent and underbridge absent,indicating they belong to Mulvey's(1972)group 3.The stylets of their second-stage larvae averaged 24μm in length,and the ratio between the lengths of the clear tail and the stylet was about 1.6.SEM observation showed that their lip pattern belonged to Stone's(1975)pattern 4.There were four incisures in the lateral field forming three bands,the two outer bands being areolated.Both of the cysts and the second-stage larvae morphologically conformed to those of Heterodera avenae.Thus,the two populations were identified as H.avenae.

关 键 词：小麦 孢囊线虫 形态学 鉴定 

分 类 号：S435.121.4[农业科学—农业昆虫与害虫防治]