2011 Annual Report
"Specialty Crops Research Initiative Proposal"
1)crosses with 'HoneySweet' plum for the transfer of the Plum pox virus (PPV) resistance transgene into California industry-adapted germplasm for the development of new PPV resistant plum varieties useful for the California industry and.
2)crosses with high sugar content plum germplasm for the development of new California-adapted plum cultivars with varying combinations of sugars for improved flavor and health benefits. A large number of 'HoneySweet' progeny were obtained and these, upon flowering, will be crossed with selected California varieties. A moderate number of progeny from the high sugar crosses were obtained. Early flowering lines planted in the field under an APHIS permit flowered in the spring (April) with standard plums and continued flowering into the early summer (June). Fruit from cross pollinations of these plums with 'HoneySweet' will be used to compare fruit growth and quality of early flowering clones in the greenhouse and field, and as additional sources of seedlings. Members of the research team met with the California Dried Plum Board and presented a project progress report. A publicly accessible 'FasTrack' breeding website was initiated with information concerning the project and its progress.