Compatibility and initial development of grapevines ‘BRS Magna’ grafted on different rootstocks

Abstract

Rootstocks are widely used in viticulture due to their resistance to biotic and abiotic stress. Additionally, rootstocks can affect vine growth and fruit quality. This study evaluated the compatibility and initial developmental of the ‘BRS Magna’ grafted on different rootstocks The wedge graft technique on woody cuttings was utilized. The percentage of survival ranged from 0% (‘VR043-43’) to 98.33% (‘101-14 MGT’), and the rootstock were grouped into three distinct groups. ‘IAC 313 Tropical’ and ‘SO4’ rootstocks were those ones with the highest vigor in relation to initial shoot growth. However, ‘IAC 572 Jales’, ‘Harmony’, ‘3309 Couderc’ and ‘Gravesac’ had the best balance between initial shoot growth and root development. The ‘BRS Magna’ when grafted on rootstocks ‘IAC 313 Tropical’, ‘SO4’ and ‘101-14 MGT’ showed the highest initial development rates, while when grafted on ‘R99’, ‘R110’ and ‘420A’, it showed the lowest initial development.

Rootstock competition and planting spacing for cv. ‘VERMENTINO’ in an altitude region of Santa Catarina

“…The lowest value of bunch mass was related to 'IAC 572'. These results demonstrate the need for adjustment in management to adapt to the vigor conferred by the rootstocks since excess or lack of vigor can lead to lower productivity (Grigolo et al, 2021), as observed in 'IAC 572' (Table V).…”