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United States Department of Agriculture

Agricultural Research Service

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Research Project: Fastrack Breeding for the Development of Plum Pox Virus Resistant Plum Varieties for the California Dried Plum Industry

Location: Appalachian Fruit Research Laboratory

Project Number: 8080-21000-023-13
Project Type: Trust

Start Date: Jul 01, 2014
End Date: Jun 30, 2015

The objectives of this project are to continue to develop new generations and new lines of PPV resistant plums to be evaluated for the California growing conditions and the quality characteristics required by the California dried plum industry.

Hybridizations between early flowering lines carrying the PPV resistance transgene and ‘Improved French’, and advanced selections from the UC-Davis breeding program will continue through the third backcross generation on a large number of plants propagated onto rootstocks from the flowering F2 generation. These plants will be used in crosses to ‘Improved French’ and several elite UC-Davis breeding program selections. This will provide a large number of seedlings carrying the ‘HoneySweet’ PPV resistance gene and with traits that will be adapted to the California growing conditions and industry requirements. These seedlings (F3) will be planted in the Kearneysville greenhouses, tested for the presence of the early flowering gene, and only those plants not carrying the early flowering gene will be shipped to the UC-Davis program for evaluation by the breeding program and the dried plum industry.

Last Modified: 8/4/2015
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