Impact of grafting on sensory profile of tomato landraces in conventional and organic management systems
Landraces are valued for their higher organoleptic quality, so it is important to assess the impact of grafting on their sensory
profile. We studied the influence of ‘Beaufort’ rootstock on agronomic, morphologic, and sensory traits using two landraces
(‘Mando’ and ‘Montgri’) and one commercial cultivar (‘Egara’) as scions in two extreme management systems for tomato
cultivation: conventional/greenhouse and organic/open field. Panel sensory analysis found that grafting onto ‘Beaufort’ had
a negative effect on sensory attributes, reducing sweetness, acidity, and intensity of flavor in the organic system and sweetness
and intensity of flavor in the conventional system. In conventional management, grafting also modified some aspects of
fruit appearance. In the conventional system, grafting significantly increased yield in all the genotypes (mean increase, 52%).
By contrast, in the organic system, grafting increased yield only in the ‘Mando’ landrace (mean increase, 62.3%). As many
genotype Å~ grafting interactions affecting many important commercial traits occurred in both management systems, specific
studies with different rootstock-scion combinations are highly recommended before adopting this technique for producing
landraces with high sensory quality.