Varietal resistance of cowpeas to the cowpea aphid,Aphis craccivorakoch (Homoptera: Aphididae) under field and screenhouse conditions in Nigeria
作者:
T. I. Ofuya,
期刊:
Tropical Pest Management
(Taylor Available online 1988)
卷期:
Volume 34,
issue 4
页码: 445-447
ISSN:0143-6147
年代: 1988
DOI:10.1080/09670878809371299
出版商: Taylor & Francis Group
关键词: cowpeas;resistance;Aphis craccivora;Nigeria
数据来源: Taylor
摘要:
Twenty four varieties of cowpea were evaluated for field resistance toAphis craccivoraKoch under natural infestation at Ile‐lfe, Nigeria. The varieties EW/1, TVu 1037, TVu 2896, TVu 2994 and TVu 3000 showed the lowest field infestation. This may be explained by antixenosis with respect to varietal selectionorfeeding and antibiosis. Screenhouse studies showed that the mechanism of resistance in TVu 1037, TVu 2896 and TVu 3000 includes antibiosis, manifested as high mortality of nymphs, reduced lifespan and low fecundity of adults.
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