Data/hora: 10/06/2024 09:10:48

Provedor de dados: 	54	
País: 	Brazil	
Título: 	Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies	
Autores: 	Grando,Magali Ferrari; Moraes-Fernandes,Maria Irene B. de.	
Data: 	1997-09-01	
Ano: 	1997	
Resumo: 	This article discusses, from the standpoint of cellular biology, the deterministic and indeterministic androgenesis theories. The role of the vacuole and of various types of stresses on deviation of the microspore from normal development and the point where androgenetic competence is acquired are examined. Based on extensive literature review and data on wheat studies from our laboratory, a model for androgenetic capacity of pollen grain is proposed. A two point deterministic model for in vitro androgenesis is our proposal for acquisition of androgenetic potential of the pollen grain: the first switch point would be early meiosis and the second switch point the uninucleate pollen stage, because the elimination of cytoplasmatic sporophytic determinants takes place at those two strategic moments. Any abnormality in this process allowing the maintenance of sporophytic informational molecules results in the absence of establishment of a gametophytic program, allowing the reactivation of the embryogenic process	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300018	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S0100-84551997000300018	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Genetics  v.20 n.3 1997	
Fonte: 	info:eu-repo/semantics/openAccess