Data/hora: 03/06/2024 17:20:58

Biblioteca(s): 	Embrapa Agricultura Digital.	
Data corrente: 	01/06/2009	
Data da última atualização: 	30/11/2010	
Autoria: 	STIEHL-ALVES, E. M.; MARTINS-CORDER, M. P.	
Afiliação: 	EUDES MARIA STIEHL-ALVES, UFSM; MAISA PIMENTEL MARTINS-CORDER, UFSM.	
Título: 	Acacia mearnsii (Fabaceae) reproductive biology: pollen tube viability and growth.	
Ano de publicação: 	2007	
Fonte/Imprenta: 	Crop Breeding and Applied Biotechnology, Londrina, v. 7, n. 1, p. 29-35, June 2007.	
Idioma: 	Inglês	
Conteúdo: 	The low seed production in Acacia mearnsii De Wild. populations indicates that narrow genetic variability interferes with the reproduction. The viability of polyads of A. mearnsii trees from a seed production area was evaluated through in vitro germination and the colorimeter method. A high mean germination (73%) and low mean pollen tube growth (23%) were observed in the germplasm. Only tree 30 presented 60% germinated polen tubes. The other means were less than 50%. On the other hand, the viability observed by the colorimeter method was high (100% viable polyads in five trees), which indicated that the colorimeter technique overestimated the true viability. This study showed that the germination ability of polyads was influenced by the genotype, contributing to a limited seed formation.	
Palavras-Chave: 	Acacia mearnsii De Wild; Acácia-negra; Plantas; Variabilidade genética.	
Thesagro: 	Agricultura; Biotecnologia; Fecundação; Genética; Pólen.	
Categoria do assunto: 	G Melhoramento Genético	
Registro original: 	Embrapa Agricultura Digital (CNPTIA)	
Exemplares: 	CNPTIA - (13053-1) - ADD - AP - PP -  -  -  - DIS