Desempenho de genótipos de alface-crespa em diferentes ambientes de cultivo, no município de Igarapava - SP
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Data
2016-02-26
Autores
Silveira, Fabio Colli Garcia [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A alface (Lactuca sativa L.) vem sendo cultivada por longos períodos desde a antiguidade. É considerada a mais importante hortaliça folhosa. É consumida na dieta brasileira, principalmente na forma de saladas cruas, devido a suas boas propriedades organolépticas. O presente trabalho objetivou avaliar o desempenho agronômico de oito linhagens e duas cultivares comerciais do Programa de Melhoramento Genético de Alface da UNESP – FCAV. As linhagens Jab 1, Jab 2, Jab 3, Jab 4, Jab 5, Jab 6, Jab 7 e Jab 8, e as cultivares de alfacecrespa Vanda e Vera foram avaliadas no município de Igarapava-SP, no período outono-inverno, em três sistemas de cultivo: Campo aberto, casa de vegetação tipo guarda-chuva e sombreado. Foram instalados três experimentos (ambientes de cultivo), em delineamento de blocos casualizados, com dez tratamentos (linhagens e cultivares) e quatro repetições. Foram avaliadas as características: diâmetro do caule, comprimento do caule, massa fresca total, número de folhas comerciais, massa das folhas comerciais e volume. Os resultados foram submetidos à análise conjunta, e as médias, comparadas pelo teste de Scott e Knott, ao nível de 5% de probabilidade. Não foram detectadas interações significativas para todas as características avaliadas. Os genótipos Jab 5 e Jab 6 destacaram-se por apresentarem os maiores volumes de planta, sendo superiores às demais linhagens e às cultivares comerciais Vera e Vanda. Os ambientes campo aberto e casa de vegetação tipo guarda-chuva foram mais adequados para todas as características avaliadas, exceto para o diâmetro do caule, que não apresentou diferença significativa entre os ambientes.
Lettuce (Lactuca sativa L.) has been cultivated for long a long time, since the antiquity. It’s considered the most important leafy vegetable. It’s consumed on Brazilian diet, mainly in fresh salads, due its good organoleptic properties. This work aimed to evaluate the agronomic behavior of eight lettuce strains and two commercial cultivars Breeding Program at UNESP – FCAV. The genotypes Jab 1, Jab 2, Jab 3, Jab 4, Jab 5, Jab 6, Jab 7, and Jab 8 and the crispy loose-leaf cultivars Vanda and Vera were assessed at Igarapava County, SP, during the fall-winter period in three cropping systems: Field, “Umbrella” greenhouse and shaded greenhouse. It was carried out three experiments (cropping systems) in randomized blocks design, with ten treatments (genotypes and cultivars) with four replications. The results were submitted to joint analysis and means compared by test of ScottKnott, at level of 5% of probability. It was assessed the following characteristics: stem diameter, stem length, total fresh mass, number of commercial leaves, commercial leaf mass, and volume. There were not significant interactions to all evaluated traits. The genotypes Jab 5 and Jab 6 highlighted from the others, even than the cultivars Vera and Vanda, due to the higher volume. The environments field and “umbrella” greenhouse were the most suitable for all characters, except to stem diameter, which did not present significant difference to all the evaluated environments.
Lettuce (Lactuca sativa L.) has been cultivated for long a long time, since the antiquity. It’s considered the most important leafy vegetable. It’s consumed on Brazilian diet, mainly in fresh salads, due its good organoleptic properties. This work aimed to evaluate the agronomic behavior of eight lettuce strains and two commercial cultivars Breeding Program at UNESP – FCAV. The genotypes Jab 1, Jab 2, Jab 3, Jab 4, Jab 5, Jab 6, Jab 7, and Jab 8 and the crispy loose-leaf cultivars Vanda and Vera were assessed at Igarapava County, SP, during the fall-winter period in three cropping systems: Field, “Umbrella” greenhouse and shaded greenhouse. It was carried out three experiments (cropping systems) in randomized blocks design, with ten treatments (genotypes and cultivars) with four replications. The results were submitted to joint analysis and means compared by test of ScottKnott, at level of 5% of probability. It was assessed the following characteristics: stem diameter, stem length, total fresh mass, number of commercial leaves, commercial leaf mass, and volume. There were not significant interactions to all evaluated traits. The genotypes Jab 5 and Jab 6 highlighted from the others, even than the cultivars Vera and Vanda, due to the higher volume. The environments field and “umbrella” greenhouse were the most suitable for all characters, except to stem diameter, which did not present significant difference to all the evaluated environments.
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Palavras-chave
Lactuca sativa, Ambiente protegido, Cultivares, Linhagens, Lactuca sativa L., Protected environment, Cultivars, Lines