INTRODUCTION AND EVALUATION OF STONEFRUIT VARIETIES FOR THE GRANITE BELT OF QUEENSLAND
Breeding programmes in the USA accounted for 80% of the peach and nectarine introductions, with the majority from California and Florida. Californian peaches and nectarines are grown commercially but many plum varieties such as Friar and Laroda are too susceptible to bacterial spot for economic production. The Florida introductions have extended the range of early ripening varieties. Peaches from North Carolina such as Correll have potential because they combine bacterial spot resistance and high fruit quality.
The narrow germplasm base of Californian varieties is discussed in relation to similarity of varieties, susceptibility to bacterial spot and future progress.