摘要
根据田间调查、病毒粒子和内含体形态、血清反应、寄主范围和症状、昆虫介体、物理性质、潜育期等试验结果、认为华南４省区的番木瓜病毒病只有ＰＲＶ一种。根据在西葫芦上的症状特点，将ＰＲＶ初步区分为４个株系，即Ｙｓ、Ｖｂ、Ｓｍ和Ｌｃ。在３１３份标样中，它们单独所占比例分别为４０．５７％，１０．２２％，０．６４％，４．４７％，Ｙｓ＋Ｖｂ（复合侵染）占４４．０８％，这表明Ｙｓ为优势株系，Ｖｂ次之，Ｌｃ和Ｓｍ发生少分布不广。研究结果还表明，以前有人报道的ＰＭａＬＶ实则是本研究的Ｖｂ，而不是一个新病毒。
Papaya ringspot virus(PRV)only was
found in this survey in South China.Based on the different symptom expressions on Cucurbita
pepo, 4 PRV strains were preliminarily identified.They were Ys, Vb,Sm and L These 4 PRV
strains could be basically identifled by the morphology of virus particles and inclusions,
serological reactions, host range,transnllssbility by Myzus persicae.and physical properties.
The Sm easily caused necrotic local lesions on Chenopodium quinoa, and successfully
back-inoculated to papaya and C.pepo.Among a total of 313 papaya virus samplcs collccted,40.
57% of them were infected with Ys,22% with Vb,44.08% with the above 2 strains mixed,4.47%
with Lc,0.64% with Sm,This research showed that papaya malformed leaf virus(PMaLV)
reported was not a new virus of papaya. but a strain of PRV,i.e. Vb strain.
出处
《华南农业大学学报》
CAS
CSCD
1994年第4期13-17,共5页
Journal of South China Agricultural University
基金
国家自然科学基金
关键词
番木瓜
病毒病
环斑病毒株系
鉴定
papaya
virus diseases. strain identification of papaya ringspot virus
