Data/hora: 09/06/2024 06:00:23

Provedor de dados: 	Revista Brasileira de Sementes	
País: 	Brazil	
Título: 	Floral biology and characterization of seed germination in physic nut (Jatropha curcas L.)	
Autores: 	Brasileiro,Beatriz Gonçalves; Dias,Denise Cunha Fernandes dos Santos; Bhering,Maria Carmen; Dias,Luiz Antônio dos Santos.	
Data: 	2012-01-01	
Ano: 	2012	
Palavras-chave: 	Physic nut; Flowering; Morphology; Germination.	
Resumo: 	The objective of this study was to characterize morphologically the seed germination and floral biology of Jatropha curcas grown in Viçosa, Minas Gerais state. The floral biology study was made on fresh inflorescences of 20 plants. For the post-seminal development study, the seeds were submitted to laboratory and greenhouse germination test. J. curcas has flowers of both sexes within the same inflorescence, with each inflorescence having an average of 131 flowers, being 120 male and 10.5 female flowers. Low numbers of hermaphrodite flowers were also found, ranging from 0 to 6 flowers per inflorescence. The germination of J. curcas begins on the third day with radicle protrusion in the hilum region. The primary root is cylindrical, thick, glabrous and branches rapidly, with about 4-5 branches three days after protrusion, when the emergence of the secondary roots begins. Seed coat removal occurs around the 8th day, when the endosperm is almost totally degraded and offers no resistance to the cotyledons that expand between the 10th and 12th day. A normal seedling has a long greenish hypocotyl, two cotyledons, a robust primary root and several lateral roots. On the 12th day after sowing, the normal seedling is characterized as phanerocotylar and germination is epigeal.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000400005	
Editor: 	Associação Brasileira de Tecnologia de Sementes	
Relação: 	10.1590/S0101-31222012000400005	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Sementes  v.34 n.4 2012	
Fonte: 	info:eu-repo/semantics/openAccess