The influence of cultivars and different inoculum levels on penetration by larvae and their development has been investigated. A marked difference was recorded in the penetration percentage of larvae between susceptible and resistant cultivars at the first two inoculum levels (100 and 1000). However, at the higher inoculum level (10,000) there did not seem to be any difference in the reaction of both the susceptible as welI as the resistant cultivars.
Heterodera avenae, penetration of larvae, resistant and susceptible barley cultivar
