Seasonal variation in susceptibility of apricot to Pseudomonas syringae pv. syringae (bacterial canker), and sites of infection in apricot and cherry
1987
Wimalajeewa, D.L.S. (Victorian Dept. of Agriculture and Rural Affairs, Burnley (Australia). Plant Research Inst.)
Infection of apricot and cherry occurred through buds, flowers, leaves, fruit and stems but not leaf scars through which natural infection can occur. Only stem and bud inoculations consistently led to the establishment of cankers. The proportion of buds showing infection was highest with inoculations made in late autumn and winter, and lowest with inoculations in summer. The number of stem inoculations, resulting in extensive cankers, was highest in late winter and spring and lowest in summer and early autumn. Leaves and fruit were susceptible only during spring, when they were immature. The importance of these findings in relation to epidemiology and control of bacterial canker is discussed
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