Articles
RESISTANCE TO PEAR SCAB IN EUROPEAN AND ASIAN PEAR CULTIVARS IN AUSTRALIA
Article number
694_19
Pages
129 – 132
Language
English
Abstract
A series of artificially inoculated glasshouse experiments and naturally infested field trials were conducted to determine the susceptibility of leaves of European and Asian pear cultivars to pear scab in Victoria, Australia.
The two commercially important European cultivars Packhams Triumph and Williams Bon Chretien were equally highly susceptible to pear scab following inoculations in the glasshouse and at one field site (Knoxfield), but Packhams Triumph was less susceptible than Williams Bon Chretien at another field site (Tatura). The European cultivars Corella, Doyenne du Comice and Pound showed good levels of resistance against Venturia pirina in glasshouse experiments and field trials.
The other nine European cultivars were susceptible to pear scab at the two field sites.
The Asian pears Tsu Li, Hosui and Twentieth Century, and the rootstock Pyrus calleryana were immune to infection.
Hood and Flordahome cultivars, produced by crossing European and Asian cultivars, were also immune to infection.
The Chinese cultivar Ya Li was also immune to leaf infection at one field site, but showed some hypersensitive leaf reactions (resistant reactions) following glasshouse inoculations and natural infections at another field site.
The two commercially important European cultivars Packhams Triumph and Williams Bon Chretien were equally highly susceptible to pear scab following inoculations in the glasshouse and at one field site (Knoxfield), but Packhams Triumph was less susceptible than Williams Bon Chretien at another field site (Tatura). The European cultivars Corella, Doyenne du Comice and Pound showed good levels of resistance against Venturia pirina in glasshouse experiments and field trials.
The other nine European cultivars were susceptible to pear scab at the two field sites.
The Asian pears Tsu Li, Hosui and Twentieth Century, and the rootstock Pyrus calleryana were immune to infection.
Hood and Flordahome cultivars, produced by crossing European and Asian cultivars, were also immune to infection.
The Chinese cultivar Ya Li was also immune to leaf infection at one field site, but showed some hypersensitive leaf reactions (resistant reactions) following glasshouse inoculations and natural infections at another field site.
Publication
Authors
O.N. Villalta, W.S. Washington , G.R. McGregor, S.M. Richards, S.M. Liu
Keywords
Venturia pirina, Pyrus communis, Pyrus pyrifolia, pear breeding
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