ISHS Acta Horticulturae 785: International Symposium on Grape Production and Processing
ROOTING BEHAVIOR OF GRAPE ROOTSTOCKS IN RELATION TO IBA CONCENTRATION AND BIOCHEMICAL CONSTITUENTS OF MOTHER VINES |
| Authors: | J. Satisha, P.G. Adsule |
| Keywords: | grape, rootstocks, IBA, phenols, C/N ratio, rooting |
| Abstract:
Grape rootstocks are playing a major role in Indian viticulture to combat adverse effects of water scarcity, soil and water salinity. Apart from Dog ridge, which is the leading rootstock in grape growing regions of India, some other rootstocks are also gaining importance for both table and wine grape varieties. Rootstocks vary in their ability to root, based on biochemical constituents of mother vines and also IBA (Indole butyric acid) concentration used for treatment of cuttings. An experiment to standardize IBA concentration for better rooting of grape rootstocks revealed maximum success percent in Vitis longii, SO-4 and 99 R using 1000 ppm of IBA, while it was maximum using 750–1000 ppm of IBA in Dog ridge, Salt Creek, 110 R and 1103 P rootstocks and Thompson Seedless recorded highest success percent using 500 ppm. Early sprouting was noticed in Vitis longii, SO-4, 99 R when treated with 2000 ppm; Dog ridge, Salt Creek, 110 R and 1103 P treated with 1000 ppm and Thompson Seedless with 500 ppm. Cuttings taken from mother vines with moderate C/N ratio and less phenol content recorded maximum success percent with maximum root length. This suggests rooting ability of different rootstock depends on biochemical content of mother vines and also concentration of IBA used for treatment of cuttings. | |
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