UC staff member Jorge Osorio Aguilar weighs grapes from a Syrah clonal selection under test for San Joaquin Valley conditions. To a grower, the right wine grape clone can improve yield, advance or delay ripening, and reduce susceptibility to rots. For a winemaker, the right clone can add complexity to the wines. But with so many clones of a given cultivar available, how do you choose? And, with the performance of clones so dependent on the growing region, how do you choose the best for your site? In the area of clonal research, the United States lags far behind Europe. […]