The Effect of Grapevine Rootstock on the Performance of Vitis vinifera L. ( cv. Colombard) on a Relatively Saline Soil

Abstract

The performance of cv. Colombard grafted onto 25 rootstocks (1045P, 1103P, 775P, 99R (RY 13), 99R (RY 2), 110R, 140Ru, 143-B Mgt, 101-14 Mgt, Ramsey, 13-5 EVEX, Constantia Metallica, Jacquez, Grezot 1, 216/3 Castel and the US hybrids 1-6, 3-6, 4-4, 2-1, 24-41, 24-10, 35-1-15, 16-13-23, 16-13-26 and 12-6-8) on relatively saline soils was investigated for 6 years. The highest yields were obtained on 13-5 EVEX, Ramsey, 143-B Mgt, 1045P and 140 Ru, whereas the US hybrids generally performed poorly, particularly those with Jacquez in their parentage. At this early stage in the trial a highly positive correlation between yield and cane mass was found. Although total soluble solids concentration and pH generally declined with increasing yield and cane mass, differences in grape composition appeared to be largely the result of differences in actual maturity.