Data/hora: 11/06/2024 11:09:16

Provedor de dados: | 74
País: | Brazil
Título: | Elimination of micronuclei from microspores in a Brazilian oat (Avena sativa L.) variety
Autores: | Baptista-Giacomelli,Flávia Roseli; Pagliarini,Maria Suely; Almeida,Juliano Luiz de.
Data: | 2000-09-01
Ano: | 2000
Resumo: | Chromosome elimination in interspecific hybrids is a powerful tool in breeding programs. Of 12 Brazilian oat varieties recommended for cultivation in southern Brazil, one variety, UFRGS 15, presented a new type of chromosome elimination never described in any other species. Chromosomes that produced micronuclei during meiosis were eliminated from microspores as microcytes. The micronucleus reached the microspore wall and formed a kind of bud, separated from the microspore. The eliminated microcytes gave origin to small and sterile pollen grains. The possible applications of this finding for oat breeding are discussed.
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572000000300029
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572000000300029
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.23 n.3 2000
Fonte: | info:eu-repo/semantics/openAccess