Impact of grafting on sensory profile of tomato landraces in conventional and organic management systems
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Tomato landrace producers are adopting grafting technology to overcome agronomic deficiencies and increase plant yields. 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 × 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.
KeywordsOrganic farming Solanum lycopersicum L. Organoleptic quality Rootstock Sensory analysis
The authors thank Planters Casas nursery for the grafting labor and the panelists for their collaboration in sensory analysis sessions. This work was supported in part by the Consorci del Parc Natural de la Serra de Collserola.
- Barrett CE, Zhao X, Sims CA, Brecht JK, Dreyer EQ, Gao Z (2012) Fruit composition and sensory attributes of organic heirloom tomatoes as affected by grafting. Horttechnology 22:804–809Google Scholar
- Casals J, Bosch L, Casanas F, Cebolla J, Nuez F (2010) ‘Montgri’, a cultivar within the Montserrat tomato type. Hortscience 45:1885–1886Google Scholar
- Cebolla-Cornejo J, Soler S, Nuez F (2007) Genetic erosion of traditional varieties of vegetable crops in Europe: tomato cultivation in Valencia (Spain) as a case study. Int J Plant Prod 1:113–128Google Scholar
- ISO (1988) Sensory analysis—general guidance for the selection, training, and monitoring of assessors. Part I: selected assessors. International Organization for Standardization, GenovaGoogle Scholar
- ISO (1998) Sensory analysis, general guidance for the design of test rooms (ISO 8589). International Organization for Standardization, GenovaGoogle Scholar
- McAvoy T, Freeman JH, Rideout SL, Olson SM, Paret ML (2012) Evaluation of grafting using hybrid rootstocks for management of bacterial wilt in field tomato production. Hortscience 47:621–625Google Scholar
- Rivard CL, Louws FJ (2008) Grafting to manage soilborne diseases in heirloom tomato production. Hortscience 43:2104–2111Google Scholar
- Simo J, Romero del Castillo R, Almirall A, Casañas F (2012) ‘Roquerola’ and ‘Montferri’ first improved onion (Allium cepa L.) cultivars for “calçots” production. Hortscience 47:801–802Google Scholar