Project Number: 5302-21220-005-07
Project Type: Trust

Start Date: Oct 01, 2006
End Date: Jun 30, 2009

Objective:
Develop Pierce's Disease (PD) resistant table and raisin grape germplasm/varieties with fruit quality equivalent to standards of present day varieties. Develop molecular markers for Xf/PD resistance in a family (SEUS) other than those from V. arizonica.

Approach:
1) Backcross hybrids [(V.rupestris x V. arizonica) x V. vinifera seedless table and raisin grapes] that have been selected for Pierce's Disease (PD) resistance to high quality V. vinifera seedless table and raisin grapes. 2) Hybridize bunch grapes from the southeastern U.S. that have PD resistance as shown by greenhouse tests with hight quality V. vinifera seedless table and raisin grapes. 3) Embryo rescue will be used to facilitate the use of seedless plants as parents. Seedlings will be propagated to conduct greenhouse screeing for PD and field evaluation of fruit characteristics simultaneously. 4) 170 plants from V. vinifera x Southeast U.S. resistant material will be evaluated in the greenhouse for resistance to PD. SSR primers will be used to develop markers to detect resistant genotypes. Documents Reimbursable with Consolidated Central Valley Table Grape Pest and Disease Control District. Log 31810. Formerly 5302-21220-004-17T. (08/08).