The present study aimed to evaluate the initial growth of Passiflora edulis plants under water deficit and inundation. The work was carried out in a greenhouse covered with transparent plastic in pots with a capacity of five liters and filled with 5 kg of substrate composed of oxisol, sand and cattle manure in the proportion of 3:1:1, respectively. The experimental design used was completely randomized, with seven treatments and five repetitions; 30 days after emergence, the plants were irrigated with water equivalent to 25%, 50%, 75%, 100%, 125%, 150% and 175% of the pot capacity and the analyzes were performed on the 52nd day. The P. edulis plants under limitation and excess water showed high stomatal sensitivity to reduce the water. In addition, under water deficit, the plants showed bigger root growth to maximize water absorption from the soil, but in both stresses the plants demonstrated reduced vegetative growth, that implies retarded establishment, thus, demonstrating an average susceptibility to water deficit and inundation.

ABSTRACT:The objective of this work was to evaluate the effect of water stress caused by the reduction of soil water availability on root development and the commercial characteristics of carrot grow crops Nantes and Brasília Calibrated Average in protected environment. The study was conducted in a greenhouse at the State University of Goiás, Câmpus Ipameri. Sowing was carried out in July 2016, and the experimental design was a randomized block design, analyzed in a 2 x 5 factorial scheme with four replications. The treatments were composed of the cultivars (Brasília Calibrated Average and Nantes) x percentage of available water in the soil (20, 40, 60, 80 and 100%). The fresh and dried masses of the individual parts of the plants (root, leaf), length, diameter, commercial classification, yield and root defect were determined.The data obtained were treated with statistical analysis through the F test and when significant regression analysis was applied. Regarding the development, the carrot Nantes of carrot in protected environment the blade of 70% obtained the best data. For the cultivar Brasília Calibrada Average the slides between 70% and 80% presented satisfactory performance for the evaluated parameters. The cultivar Brasília Calibrada Meio, showed a higher percentage of increment for regression. For the commercial classification, size and absence of defect, the Nantes cultivar in the 40% blade was the one that presented the best. KEYWORDS:Daucus carota, water available in the soil, commercial classification. (20, 40, 60, 80 e 100%).Determinaram-se as massas frescas e secas das partes individuais das plantas (raiz, folha), comprimento, diâmetro, classificação comercial, produtividade e raiz com defeito. ANÁLISE COMERCIAL DAS CULTIVARES DE CENOURA BRASÍLIA CALIBRADA AMARELA E NANTES EM DIFERENTES REPOSIÇÕES HÍDRICASOs dados obtidos foram tratados com análises estatísticas através do teste F e quando significativo aplicou-se a análise de regressão. Quanto ao desenvolvimento, a cultivar Nantes de cenoura em ambiente protegido a lâmina de 70% obteve os melhores dados. Para a cultivar Brasília Calibrada Média as lâminas entre 70% e 80% apresentaram desempenho satisfatório para os parâmetros avaliados. A cultivar Brasília Calibrada Média mostrou maior porcentagem de incremento para regressão. Para a classificação comercial, tamanho e ausência de defeito, a cultivar Nantes na lâmina de 40%, foi a que melhor se apresentou. PALAVRAS-CHAVE:Daucus carota, água disponível no solo, classificação comercial.