Data/hora: 03/06/2024 16:45:40

Provedor de dados: 	Ciência e Agrotecnologia	
País: 	Brazil	
Título: 	KARYOTYPE ALTERATIONS AFTER HYBRIDIZATION BETWEEN Pennisetum purpureum AND Pennisetum glaucum	
Autores: 	Reis,Gabriela Barreto dos; Andrade-Vieira,Larissa Fonseca; Campos,José Marcello Salabert de; Pereira,Antonio Vander; Davide,Lisete Chamma.	
Data: 	2015-10-01	
Ano: 	2015	
Palavras-chave: 	Interspecific hybrids; Chromosome morphology; DNA content; In situhybridization.	
Resumo: 	ABSTRACTNapier grass and pearl millet are tropical forages from the genus Pennisetum. The variability in those species is explored in breeding programs of forages, as well as in the production of interspecific hybrids. Hybridization is a phenomenon that leads to intergenomic conflicts following the elimination of genomic sequences. In this sense, the present work aimed to study the genomic alterations occurring after interspecific hybridization of pearl millet and Napier grass with the use of cytogenetics and flow cytometry tools. These methods allowed the evaluation of chromosome morphometry, DNA content and genomic ratio in pearl millet, Napier grass and hybrids. It was observed that pearl millet and Napier grass have chromosomes with superposed size. The hybrid presents chromosomes that are smaller than expected, leading to karyotype alterations. Additionally, comparing the DNA content of parents and hybrids, loss of DNA content was demonstrated. Further, changes in the pearl millet and Napier grass genome ratio were also verified in the hybrid nucleus. Moreover, genomic rearrangements were shown to occur through karyotype alterations in the hybrid.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000500443	
Editor: 	Editora da Universidade Federal de Lavras	
Relação: 	10.1590/S1413-70542015000500003	
Formato: 	text/html	
Fonte: 	Ciência e Agrotecnologia  v.39 n.5 2015	
Fonte: 	info:eu-repo/semantics/openAccess