Estádio de maturação do fruto e uso do ácido giberélico na germinação de sementes de mamoeiro
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Data
2009-12
Título da Revista
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Editor
João Gaspar Farias
Resumo
The achievement of uniform seedlings, capable of
establishing a profitable stand, is fundamental for growing
papaya successfully. Accordingly, studies related to fruit maturity,
dormancy breaking, and physiological quality of seeds can be
of great importance for producers of fruits and seeds. Papaya
(Carica papaya L.) hybrid group ‘Tainung 01’ seeds germination
and seedlings vigor were studied as a function of fruit maturation
stage (semi-mature and mature), combined with immersion of
the seeds, for four hours, in different concentrations of giberelic
acid - GA3 (0 mg L-1, 250 mg L-1, 500 mg L-1, and 1,000 mg L-1).
A completely randomized design was used, disposed in a 2x4
factorial scheme, with four replications. There were significant
effects of the interaction among the factors studied for all
variables. The seeds, regardless of fruit ripeness stage, did not
germinate in the absence of GA3. Seeds from semi-mature fruits
showed higher germination percentages than those from mature
fruits, when soaked in solutions of 250 mg L-1 and 500 mg L-1 GA3.
For seeds treated with 1,000 mg L-1 GA3, the largest germination
percentage was observed in seeds from ripe fruits. The results
allowed us to conclude that fruits at semi-mature stage were more
appropriate to supply seeds for seedlings. The immersion of seeds
from semi-mature fruits in a 500 mg L-1 GA3 solution and seeds
from mature fruits in a 1,000 mg L-1 GA3 solution have promoted
a better germination and seedlings with greater vigor.
Descrição
Palavras-chave
Carica papaya, Propagação, Vigor de plântulas, Regulador de crescimento, Propagation, Seedling vigor, Growth regulator
Citação
LOPES, Antonio Wagner Pereira; SELEGUINI, Alexsander; BOLIANI, Aparecida Conceição; CÔRREA, Luiz de Souza. Estádio de maturação do fruto e uso do ácido giberélico na germinação de sementes de mamoeiro. Pesquisa Agropecuária Tropical, Goiânia, v. 39, n. 4, p. 278-284, out./dez. 2009. Disponível em: <https://www.revistas.ufg.br/pat/article/view/5763/5572>.