Location: Crop Diseases, Pests and Genetics
Project Number: 5302-21220-006-00
Start Date: Jun 14, 2013
End Date: Jun 13, 2018
Classical breeding techniques have been used to create segregating populations where the expression of quantitative traits has been concentrated and newly available characters have been transferred into adapted Prunus and Vitis germplasm. Seedlings in existing segregating populations of Prunus and Vitis will be selected and propagated for new cultivar development. Greenhouse and field screening will proceed to select Vitis seedlings with resistant to powdery mildew. Molecular markers will be used to identify those Vitis seedlings with multiple sources of powdery mildew resistance. Resistance to powdery mildew and Pierce’s Disease will be combined through hybridization of appropriate vines. Hybridizations will continue for production of both dry on the vine and red flesh color in grapes. Apricots will be selected for drying ability and for late maturity season from all remaining segregating progenies. New self-compatible almonds will be selected from segregating populations that have kernel qualities similar to Nonpareil, and four high kernel quality self-compatible almond selections will be trialed in three locations in the San Joaquin Valley. Hybridization will be repeated if necessary, to achieve population sizes necessary for identifying and selecting elite germplasm or for the development of molecular markers linked to traits of interest.