Detecting the presence and distribution ofGlobodera rostochiensisandG. pallidamixed populations in New Zealand using DNA probes
作者:
JohnW. Marshall,
期刊:
New Zealand Journal of Crop and Horticultural Science
(Taylor Available online 1993)
卷期:
Volume 21,
issue 3
页码: 219-223
ISSN:0114-0671
年代: 1993
DOI:10.1080/01140671.1993.9513772
出版商: Taylor & Francis Group
关键词: DNA probes;potato cyst nematodes;species distribution;New Zealand
数据来源: Taylor
摘要:
The distribution of the potato cyst nematodeGlobodera rostochiensis(Woll.) pathotype Rol and G.pallida(Stone) pathotype Pa2/3 in New Zealand was determined using dot‐blot hybridisation with species‐specific DNA probes. Both species of nematode were present in New Zealand, with the main foci in intensive cropping areas (market gardens) around the urban centres of Auckland, Christchurch, and Dunedin. A number of domestic gardens were also infested. Of the 64 populations tested, 24% were pure Ro 1, 20% were predominantly Ro 1 with a low frequency or trace of Pa2/3, 33% were pure Pa2/3, and 6% were Pa2/3 with a trace of Ro 1. The remaining 17% contained an equal proportion of both species. The presence of trace Pa2/3 and the impact of mixed species populations on the long‐term success of nematode‐resistant potato cultivars is discussed.
点击下载:
PDF (453KB)
返 回