Susceptibility of European and Asian pears to pear scab
O.N. Villalta, W.S. Washington and G. McGregor, Primary Industries Research Victoria, Knoxfield, Private Bag 15, Ferntree Gully Mail Delivery Centre, Victoria 3176, Australia.
A controlled study showed that leaves of young trees of the European pear cultivars Williams Bon Chretien and Packham's Triumph were highly susceptible (HS) to pear scab infection. European cultivars Buerre Bosc, Clapps, Red Sensation, Howell, Josephine de Malines and Conference were susceptible (S) to infection while leaves of the European cultivars Pound, Doyenne du Comice, Corella and Eldorado were resistant (R), and the Chinese pear cultivar Ya Li was also resistant (R) to infection. Japanese pear cultivars Hosui and Twentieth Century, the Chinese cultivar Tsu Li, and the rootstock Pyrus calleryana were immune (I) to infection. Leaves of two interspecific hybrids of crosses between European and Asian pears were also immune to infection.
Keywords: black spot, Venturia pirina, Pyrus communis, Pyrus pyrifolia.
Plant Protection Quarterly (2004) 19 (1) 2-4.