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E. Boulding | 1998Pea aphid (Acyrthosiphon pisum) clones have been shown to be adapted to particular host plant species but it is unknown whether there are host races. A 1101 base pair region of the mitochondrial cytochrome oxidase I gene (COI) was sequenced for [...]article/chapitre/communication
P. Sunnucks ; P. Debarro ; G. Lushai ; N. Maclean ; D. Hales | 1997In a previous study, samples of the grain aphid Sitobion avenae (F.) were collected from wheat and adjacent cocksfoot hosts in a population thought to be primarily parthenogenetic, and DNA from individual aphids was analysed with a multilocus te[...]article/chapitre/communication
P. Sunnucks ; D. Chisholm ; E. Turak ; D. Hales | 1998The aim of this study was to test whether host plant responses of Sitobion aphids have evolved under parthenogenesis and to examine the relationship between genetic and phenotypical similarity. There are four known chromosomal races of Australia[...]article/chapitre/communication
B. Fenton ; J. Woodford ; G. Malloch | 1998Clones of the peach-potato aphid, Myzus persicae (Sulzer), mostly from Scotland, UK were examined using an r DNA fingerprinting technique. Eighty patterns (genotypes) were found amongst the 276 clones. A large number of clones (30%) from all sam[...]article/chapitre/communication
W. Tjallingii | 1994Aphis fabae took 3 to 4 hours, after access to a plant, to show the first puncture of a sieve element. A further hour was needed before sustained ingestion started. Early probes did not show sieve element punctures, in general. Within later prob[...]article/chapitre/communication
G. Dawson ; D. Griffiths ; L. Merritt ; A. Mudd ; J. Pickett ; L. Wadhams ; C. Woodcock | 1990article/chapitre/communication