02622naa a2200217 a 450000100080000000500110000800800410001910000180006024501290007826000090020752019260021665000150214265000200215770000170217770000180219470000140221270000160222670000180224270000170226077301270227711333782023-06-27       2023    bl uuuu     u00u1 u    #d1 aBRIGHENTI, A.  aECOPHYSIOLOGY OF SAUVIGNON BLANC GRAFTED ON DIFFERENT ROOTSTOCKS IN THE HIGHLANDS OF SOUTHERN BRAZIL.h[electronic resource]  c2023  aThe growth of many plants in cultivated systems is profoundly affected by selection of appropriate rootstocks, which  have been bred from a number of Vitis species, especially V. berlandieri, V. riparia, and V. rupestris. In addition to the  enhanced resistance to phylloxera, grapevine rootstocks are known to confer resistance to various pathogens and  tolerance to abiotic stresses. Moreover, rootstocks were found to regulate the size of the scion, to affect fruit  development/ripening and to contribute to fruit quality. The objective of this work was to evaluate the influence of  different rootstocks on the ecophysiology of Sauvignon Blanc grown in the highlands of southern Brazil. The experiment  was carried out in the city of S??o Joaquim (28??16'30?S, 49??56'09?W; altitude 1,400 m a.s.l.), during the 2021 and 2022  vintages. The rootstocks evaluated were 101-14 Mgt, 3309 C, 110 R, 99 R, 1103 P, Kober 5BB, SO4, 420 A Mgt, Gravesac and IAC 766.  Ecophysiological analyzes included assessments of vegetative development, productive indexes, physical characteristics of  clusters and berries, technological and phenolic maturation. The rootstocks 1103 P and IAC 766 were related to higher  concentration of total acidity, longer internode length and larger leaf area in the main and secondary shoots. The rootstocks Gravesac, 3309 C and 101-14, were related to an intermediate vegetative development, high concentrations of soluble solids,  lower concentration of total polyphenols and an intermediate productive performance. Rootstocks 420 A Mgt and 110 R were  related to high concentration of soluble solids, high cluster compactness, smaller leaf area and lower pruning weight. The  rootstock 99 R was related to high productivity, lower vegetative development, greater vegetative/productive balance.  Finally, the Kober 5BB and SO4 rootstocks, were related to high yields, heavier clusters and berries.  aRootstocks  aSauvignon Blanc1 aVOTRE, T. G.1 aBRIGHENTI, E.1 aHILHA, A.1 aCARDOSO, J.1 aCASTRO, G. C.1 aSILVA, A. L.  tIn: WORLD CONGRESS OF VINE AND WINE, 44., 2023, C??diz/Jerez, Espa??a. Abstracts... C??diz, Espa??a: OIV, 2023. p. 457-458