Improved Disease-Resistant Seedless Muscadine Grape Cultivars Utilizing Consumer-Friendly Genetic Modification Technologies
Southern Horticultural Research
2013 Annual Report
1a.Objectives (from AD-416):
The goal of this program is to modify quality attributes of muscadine grape (Vitis rotundifolia Micx. and hybrids) in order to broaden its consumer acceptance, thus increasing production and markets. The primary objective is to add the seedless trait to target cultivars. The secondary objective is to increase resistance to fungal diseases that plague certain important cultivars, leading to poor shelf life.
1b.Approach (from AD-416):
Use genetic engineering to create seedless, rot resistant cultivars and extend the information to growers, wholesalers and retailers.
Constructs of the two muscadine grape cultivars Alachua’ and ‘Delicious’ that contain genes for improved disease resistance and for seedlessness were obtained from the University of Florida. 10 plants each of controls (cultivars) and their genetically modified constructs were established in June at the USDA-ARS blueberry research farm at Stone County, MS. Plot maps were prepared and initial data have been collected on plant characteristics including plant growth and disease ratings.