ISHS Acta Horticulturae 528: VII International Symposium on Grapevine Genetics and Breeding
BREEDING ROOTSTOCKS RESISTANT TO GRAPE FANLEAF VIRUS SPREAD, USING VITIS X MUSCADINIA HYBRIDIZATION |
| Authors: | A. Bouquet, Y. Danglot, M. Bongiovanni, P. Castagnone-Sereno, D. Esmenjaud, A. Dalmasso, L. Torregrosa |
| Keywords: | Nematode resistance, multiplication rate, virus transmission, ELISA |
| Abstract:
Due to their high toxicity, the nematicides used to prevent the spread of grape fanleaf virus in the vineyards are not safe for environment and health. They are prohibited in numerous European vineyards since several years and will be ineluctably in France. The need of other methods is evident and urgent. The species Muscadinia rotundifolia is known to be highly resistant to Phylloxera and to the nematode Xiphinema index which transmits the virus, but not suitable as rootstock due to its graft-incompatibility with Vitis vinifera, poor rooting ability and high susceptibility to lime-induced chlorosis. This paper reports the nematode and GFLV-transmission resistance observed from 1985 to 1997 during greenhouse and field tests, on F1 hybrids V. vinifera x M. rotundifolia and some of their progenies after back-crossing with V.vinifera and rootstock cultivars. The possibility of combining nematode resistance and virus resistance induced by coat-protein gene of GFLV is discussed. | |
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