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Resistance in groundnut ( Arachis hypogaea L.) to Aphis craccivora (Koch).
Author(s) -
PADGHAM D. E.,
KIMMINS F. M.,
RAO G. V. RANGA
Publication year - 1990
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1990.tb04214.x
Subject(s) - biology , arachis hypogaea , aphis craccivora , population , genotype , aphid , veterinary medicine , homoptera , alate , horticulture , aphididae , pest analysis , genetics , medicine , demography , sociology , gene
SUMMARY The behaviour, development and reproductive capacity of Aphis craccivora , vector of a number of groundnut viruses, are compared on a range of susceptible and resistant genotypes. Field trials demonstrated no significant difference between genotypes in the rate of arrival of alates, but population development was slower, and subsequent population decline faster, on the genotype EC 36892 (ICG 5240). Behavioural studies in the screenhouse, likewise showed no inhibition to alighting onto EC 36892 though choice tests demonstrated a significant redistribution of the population in favour of the susceptible genotype TMV 2 (ICG 221) over the following 10 h. In clip cage experiments, development was faster and nymphal numbers were higher on the genotype TMV 2 compared to EC 36892.