Avaliação de linhagens e híbridos experimentais de pepino do grupo varietal japonês sob ambiente protegido
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Data
2007-01-01
Autores
Cardoso, Antonio Ismael Inácio [UNESP]
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Editor
Instituto Agronômico de Campinas
Resumo
O objetivo deste trabalho foi avaliar linhagens e híbridos experimentais de pepino japonês sob ambiente protegido. 32 tratamentos (18 híbridos experimentais, 12 linhagens e 2 híbridos comerciais: Tsuyataro e Yoshinari) foram avaliados no delineamento em blocos ao acaso, com 4 repetições e 4 plantas por parcela. Foram avaliadas as seguintes características: número de frutos total e comercial; taxa de frutos comerciais; comprimento, diâmetro e relação comprimento pelo diâmetro dos frutos. As médias de todos os tratamentos foram comparadas pelo teste de Scott-Knot (5%) e foram estimadas as heteroses dos híbridos em relação à média dos genitores e em relação ao genitor superior. Foram obtidos híbridos experimentais tão produtivos quanto os comerciais, sendo que, em média, as linhagens foram menos produtivas que os híbridos. No geral, as heteroses para número de frutos foram positivas e elevadas, enquanto que para as características de fruto foram de menor valor.
The objective of this work was to evaluate japanese cucumber experimental lines and hybrids under protected cultivation. 32 treatments (18 experimental hybrids, 12 lines and two commercial hybrids: Tsuyataro and Yoshinari) were evaluated at randomized blocks design, with 4 replicates and 4 plants per plot. The following characteristics were evaluated: total and commercial fruit number; rate of commercial fruits; fruit length (L), diameter (D) and L/D rate. Treatment means were compared by Scott-Knot (5%) test and hybrids heterosis over parentals means and over superior parental were estimated. There were experimental hybrids as productive as commercial ones, and, in general, lines were less yielding than hybrids. In general, heterosis for fruit number were positive and high, while heterosis for fruit characteristics were of lesser values.
The objective of this work was to evaluate japanese cucumber experimental lines and hybrids under protected cultivation. 32 treatments (18 experimental hybrids, 12 lines and two commercial hybrids: Tsuyataro and Yoshinari) were evaluated at randomized blocks design, with 4 replicates and 4 plants per plot. The following characteristics were evaluated: total and commercial fruit number; rate of commercial fruits; fruit length (L), diameter (D) and L/D rate. Treatment means were compared by Scott-Knot (5%) test and hybrids heterosis over parentals means and over superior parental were estimated. There were experimental hybrids as productive as commercial ones, and, in general, lines were less yielding than hybrids. In general, heterosis for fruit number were positive and high, while heterosis for fruit characteristics were of lesser values.
Descrição
Palavras-chave
Cucumis sativus, melhoramento, produção, Cucumis sativus, breeding, yield
Como citar
Bragantia. Instituto Agronômico de Campinas, v. 66, n. 3, p. 469-475, 2007.