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Efeitos de fitorreguladores na germinação de sementes de citrumelo "swingle"
Author(s) -
Elizabeth Orika Ono,
Sarita Leonel,
João Domingos Rodrigues
Publication year - 1995
Publication title -
semina. ciências agrárias
Language(s) - Portuguese
Resource type - Journals
SCImago Journal Rank - 0.268
H-Index - 25
eISSN - 1679-0359
pISSN - 1676-546X
DOI - 10.5433/1679-0359.1995v16n1p47
Subject(s) - germination , horticulture , gibberellin , kinetin , biology , citrus paradisi , distilled water , botany , chemistry , rutaceae , tissue culture , biochemistry , chromatography , in vitro
Foram estudados os efeitos de giberelinas e citocininas, na germinação de sementes de citrumelo "Swingle" (Poncirus trifoliata x Citrus paradisi). As sementes foram colocadas no germinador em gerbox contendo papel de filtro umedecido com água destilada. As sementes, retiradas de frutos maduros, foram lavadas, secadas à sombra e armazenadas em câmara fria; logo após, foram tratadas com os fitorreguladores por 24 horas, definindo os seguintes tratamentos: H2O; 50 mg/l de GA3; 250 mg/l de GA3, 50 mg/l de GA4 + GA7 + fenilmetilaminopurina; 100 mg/l de GA4 + GA7 + fenilmetilaminopurina; 20 mg/l de fenilmetilaminopurina e 40 mg/l de fenilmetilaminopurina. As avaliações foram realizadas depois de 10 dias de semeadura, num intervalo de 2 dias entre elas. Através da análise estatística dos resultados obtidos, foi possível concluir que, no tratamento com 50 ou 250 mg/l de GA3, houve a maior porcentagem de germinação de sementes, em menor tempo.  The objective of this research was study the effects of kinetin and gibberellins on Poncirus trifoliata x Citrus paradisi seed germination. The medium for seed germination was filter paper moisted with distilled water. The seeds were removed from ripe fruits, washed, dried and placed in refrigerator at 4-5°C. After that, the seeds were treated with growth regulators during 24 hours. The treatments were H2O; 50 mg/l de GA3; 250 mg/l de GA3, 50 mg/l de GA4 + GA7 + phenylmethylaminepurine; 100 mg/l de GA4 + GA7 + phenylmethylaminepurine; 20 mg/l of phenylmethylaminepurine; 40 mg/l of phenylmethylaminepurine. The evaluations were accomplished every two days starting 10 days after seeding. The GA3 50 or 250 mg/l proved to be most beneficial in enhancing seed germination.

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