The production of organically grown tomatoes in the Amazonian region of Brazil is difficult due to inherent phytosanitary issues. The objectives of the present investigation were to evaluate the productivity of grafted tomato plants (Solanumlycopersicum cv. Santa Adélia) grown organically in Rio Branco, Acre, Brazil, and to assess scion/rootstock compatibility under organic growth conditions. The Solanum species employed as rootstocks were S. gilo (jiló), S. lycocarpum (jurubebão), S. stramonifolium (jurubeba vermelha) and S. viarum (joá), while the susceptible S.lycopersicum cultivar Santa Adélia was the scion. Ungrafted tomato plants and tomato grafted on tomato rootstock were employed as controls. The experiment was arranged in a completely randomized block design with six treatments and five repetitions of five plants each. Data were submitted to analysis of variance and the significance of differences between treatments were determined using the Tukey test (P<0.05). All ungrafted tomato plants and those comprising tomato grafted on S.lycopersicum rootstock became infected by brown rot and perished. The total numbers of fruits, numbers of marketable fruits, mean masses of fruits, total productivities and productivities of marketable fruits associated with tomato grafted on S. gilo, S. lycocarpum and S. stramonifolium rootstocks were significantly higher (P<0.05) than the equivalent values obtained with tomato grafted on S. viarum rootstock. S. gilo exhibited the best compatibility index (1.11) of all rootstock/scion combinations studied. It is concluded that tomato grafted on S. gilo, S. lycocarpum and S. stramonifolium rootstocks represent viable alternatives for the production of organic tomatoes in the Amazon region.
RESUMO A pós-colheita de banana 'Maça' muitas vezes é limitada pela deteriorização fisiológica causada pelo excessivo amadurecimento da fruta. Desta forma, este trabalho objetivou avaliar o efeito de concentrações de fécula de mandioca utilizadas como revestimento comestível sobre as características físico-químicas de frutos de banana 'Maça' durante o período armazenamento em temperatura ambiente, com média de 25°C e umidade relativa médi a de 41%. Os frutos foram colhidos no assentamento Bezerro Vermelho, no município de Tangará da Serra/MT. O delineamento foi inteiramente casualizado em esquema fatorial 5 x 5 (épocas x concentrações de fécula de mandioca). Os frutos foram imersos nas suspensões 0, 2, 4, 6 e 8% de concentração de fécula de mandioca. As avaliações foram realizadas aos 0, 4, 8, 12 e 16 dias de armazenamento para as variáveis, sólidos solúveis (SS), pH, acidez titulável (AT), relação sólidos solúveis e acidez titulável (SS/AT), e até 12 dias de armazenamento para perda de massa fresca (PMF), cor de casca (CC), e vida útil (VU). A utilização do biofilme a base de fécula de mandioca na concentração de 8% demonstrou ser uma opção viável para conservação pós-colheita de frutos de banana 'Maça' pois além de ser comestível e de baixo custo, proporcionou o aumento da vida útil, retardando o amadurecimento e conservando a firmeza do fruto. PALAVRAS-CHAVE: biofilme, Musa acuminata, vida útil.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.