Caracterization of seed germination of Zephyranthes sylvatica (Mart.) Baker (Amarilidacea)

• Autor(a) principal: Silva,Mayara Wesley da
• Data de Publicação: 2014
• Outros Autores: Barbosa,Laise Guerra, Silva,José Eduardo Santos Barboza da, Guirra,Keylan Silva, Gama,Diego Rangel da Silva, Oliveira,Gilmara Moreira de, Dantas,Bárbara França
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of Seed Science
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372014000200006
• topic: caatinga; lily; vigor; propagation

Zephyranthes sylvatica is a beautiful lily, endemic from the Brazilian Caatinga. Although it has a great ornamental potential, little is known about this species, especially regarding its seeds germination process. Aiming to characterize the germination of Z. sylvatica seeds, we studied its imbibition curve, optimum temperature and substrate for germination and seedling emergence, osmotic and salt stress tolerance, as well as the tolerance to frosting/ defrosting, which indicates long term cryostorage potential. The germination of Z. sylvatica presents a triphasic model of imbibition, in which the primary root protrusion occurs after 72 hours of imbibition. The ideal conditions for evaluating seed germination of Z. sylvatica is 25 ºC, in paper rolls. These seeds are highly tolerant to osmotic stress, but not to salt stress. Z. sylvatica seeds can be cryopreservated without loss of germination and seed vigor.