Temperatura, escarificação mecânica e substrato na germinação de sementes das palmeiras juçara e açaí


Autoria(s): Beckmann-Cavalcante, Márkilla Z.; Pivetta, Kathia F. L.; Iha, Liriane Laguardia; Takane, Roberto J.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

01/10/2012

Resumo

The propagation of 'juçara' and 'açaí' is done by seeds, but there is a great desuniformity in the germination process. In this way, the objective of this study was to verify the effect of temperature, mechanical scarification and substrate on seed germination of both species. Two experiments were conducted in a completely randomized design, with four replications each consisting of 25 seeds. The first was conducted with 14 treatments in factorial scheme 7 x 2, seven temperatures (20, 25, 30, 35, 20-30 and 25-35 °C and natural condition), with and without mechanical scarification. The second was constituted of eight treatments in factorial scheme 4 x 2, four substrates (sand, vermiculite, coconut fiber and soil + manure), with and without mechanical scarification. Seeds of 'juçara' palm present the highest mean percentage and germination speed index in alternating temperatures of 20-30 and 25-35 °C and natural condition and in substrates sand, vermiculite and coconut fiber. Temperatures of 30, 35, 20-30 and 25-35 °C and natural condition in all substrates tested were the most favorable condition for 'açai' seeds. The scarification of the seeds was favorable to the germination process of 'juçara' whereas the seeds of açaí does not need to be scarified.

Formato

569-573

Identificador

http://dx.doi.org/10.5039/agraria.v7i4a1684

Revista Brasileirade Ciencias Agrarias, v. 7, n. 4, p. 569-573, 2012.

1981-1160

1981-0997

http://hdl.handle.net/11449/73628

10.5039/agraria.v7i4a1684

2-s2.0-84871578267

2-s2.0-84871578267.pdf

Idioma(s)

por

Relação

Revista Brasileirade Ciencias Agrarias

Direitos

openAccess

Palavras-Chave #Euterpe edulis #Euterpe oleraceae #Germinative process #Physic dormancy #Euterpe
Tipo

info:eu-repo/semantics/article