![]() ![]() Foi realizado um ensaio em estufa durante a primavera/verão no NW de Portugal com o objetivo de avaliar os efeitos na produtividade e qualidade dos frutos de tomateiros enxertados (cv. ![]() Na cultura de tomate em estufa o número de hastes por planta enxertada, que determina a densidade de plantio e exposição solar da cultura, deve ser investigado para uma correta gestão da cultura. O uso da enxertia na horticultura tem aumentado como estratégia de prevenção de estresses bióticos e abióticos de origem edáfica. Solanum lycopersicum cotyledonary and plant nodes Multifort rootstock stem number vegetable grafting. The greater yield obtained from double-stemmed plants offsets the increased planting and seedlings costs of using grafted tomato plants, particularly so for double-stemmed plants grown from first nodes, as they do not require intensive nursery care and are therefore less costly than those grown from cotyledonary nodes. Fruit quality assessed through firmness (1.0 kg/cm 2), soluble solids (5.1☋rix), acidity (1.0 g/100 g fresh weight), pH (4.4) and dry mater content (4.9%) was not affected by pruning systems. These results can be explained by root system limitations to uptake water and nutrients coupled with the stronger competition between stems for the 3- and 4-stemmed plants. Total yield was significantly increased for the double-stemmed tomato plants, irrespectively of node origin (average yield 26.5 kg/m 2), as compared to the 3- and 4-stemmed plants (average yield 19.5 kg/m 2). Vinicio grafted onto Multifort rootstock) pruned to 2, 3 and 4 stems developed from the plant first nodes, or pruned to 2 stems developed from cotyledonary nodes, according to common practice. A greenhouse experiment was run in the spring/summer season in the NW Portugal to assess the yield and quality parameters for grafted tomato plants (cv. ![]() The effects of pruning grafted plants on yield and fruit quality have not been established, and this information is crucial to support decision-making by growers. For tomato crops, the number of stems per grafted plant determines planting density and crop exposure to sunlight. Vegetable grafting is an increasingly used crop management strategy that aims to prevent soilborne biotic and abiotic stresses. ![]()
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