02511naa a2200361 a 450000100080000000500110000800800410001902200140006002400530007410000230012724501320015026000090028252014910029165000200178265000160180265000110181865000250182965000180185465000180187265000090189065000180189965000080191765000140192565000160193965000190195565300140197465300200198865300260200865300250203470000230205970000200208277300470210221457712024-04-25       2023    bl uuuu     u00u1 u    #d  a1678-992X7 ahttps://doi.org/10.1590/1678-992X-2022-00182DOI1 aLEÃO, P. C. de S.  aPerformance of BRS Magna vines grown under different training systems, rootstocks and production cycles.h[electronic resource]  c2023  aOver the past decade, the business of producing juice from grapes (Vitis labrusca L. and hybrids) has been expanding in response to increasing consumption encouraged by campaigns promoting the benefits grape juice can have on health. This study aimed to determine the effect of the production cycle, vine training system, and rootstock on the yield and physical and physical-chemical characteristics of ?BRS Magna? grapes grown in the Vale do Submédio São Francisco in the northeastern region of Brazil. The study was conducted in Petrolina, Pernambuco, over eight production cycles (2017 to 2020). The grapevines were trained in three vine training trellis systems: espalier, lyre, and pergola; and grafted onto two rootstocks: IAC 572 and IAC 766. The production cycle, training system, and rootstocks affected the yield components, vigor, and physical characteristics of the BRS Magna grapes. The combination of the pergola training system and rootstock IAC 766 stood out from the others, providing mean yields estimated at 26 t ha?1 per production cycle. The soluble solids content (SS), titratable acidity (TA), and SS TA?1 ratio were affected neither by the training system nor the rootstock, and higher values for SS and lower values for TA were obtained in the first, second, fourth and eighth production cycles. Thus, the pergola training system and rootstock IAC 766 are recommended for promoting yield gains in the ?BRS Magna? grape in the Vale do Submédio São Francisco.  aCrop management  aGrape juice  aGrapes  aTropical agriculture  aPorta Enxerto  aProdutividade  aSuco  aSuco de Fruta  aUva  aVariedade  aViticultura  aVitis Labrusca  aBRS Magna  aEnxerto IAC 766  aSistema de condução  aViticultura tropical1 aCUNHA, M. A. C. da1 aSOUZA, E. R. de  tScientia Agricolagv. 80, e20220018, 2023.