In order to compare the anti-aphid melon varieties，7 varieties were compared by combination of
preference selection on leaf discs in laboratory and the population dynamics on plants in the open field．The results
showed that differences of feeding and oviposition preferences of Aphis gossypii Glover have been observed among
the 7 melon cultivars．The aphids on‘ Yangjiaomi’ and‘ IVF437’ were lower（2-3 aphids），with the choice
rate of 5.54%-7.38% after 2 hours feeding．After 12 hours，there were 5.50 and 14.00 nymph aphids observed on
‘Yangjiaomi’ and‘ IVF437’，respectively，showing that the preferences for‘ Yangjiaomi’ and‘ IVF437’ of A.
gossypii were significantly lower than that of the other varieties．Same trend were observed for the choice trial on
leaf discs after 24 hours．In addition，the population of A. gossypii increased continuously on 7 melon plants and
the aphids on‘ IVF437’ plants were 827.00 after 15 days，exhibiting the lowest quantities．In conclusion，‘IVF437’
and‘ Yangjiaomi’ had higher anti-aphid traits than the rest tested varieties in this study．The results will provide
scientific basis for the plantation and breeding of melon aphid-resistant varieties．
