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	Provedor de dados Ciência Rural (1) PAB (1) Autor Bustamante,Fernanda de Oliveira (2) Campos,José Marcello Salabert de (1) Davide,Lisete Chamma (1) Leão,Fernando Ferreira (1) Mittelmann,Andrea (1) Pereira,Antonio Vander (1) Pereira,Roselaine Cristina (1) Santos,Natália de Souza (1) Techio,Vânia Helena (1) Mais... Palavra-chave Mixoploidy (2) Chromosomal duplication (1) DNA content (1) Interspecific hybrids (1) Italian ryegrass (1) Pennisetum glaucum (1) Pennisetum purpureum (1) Plant breeding (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2017 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Genomic behavior of hybrid combinations between elephant grass and pearl millet PAB Leão,Fernando Ferreira; Davide,Lisete Chamma; Campos,José Marcello Salabert de; Pereira,Antonio Vander; Bustamante,Fernanda de Oliveira. The objective of this work was to evaluate the genomic behavior of hybrid combinations between elephant grass (Pennisetum purpureum) and pearl millet (P. glaucum). Tetraploid (AAA'B) and pentaploid (AA'A'BB) chromosome races resulting from the backcross of the hexaploid hybrid to its parents elephant grass (A'A'BB) and pearl millet (AA) were analyzed as to chromosome number and DNA content. Genotypes of elephant grass, millet, and triploid and hexaploid induced hybrids were compared. Pentaploid and tetraploid genomic combinations showed high level of mixoploidy, in discordance with the expected somatic chromosome set. The pentaploid chromosome number ranged from 20 to 34, and the tetraploid chromosome number from 16 to 28. Chromosome number variation was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pennisetum glaucum; Pennisetum purpureum; DNA content; Interspecific hybrids; Mixoploidy. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000700006 Stability in chromosome number and DNA content in synthetic tetraploids of Lolium multiflorum after two generations of selection Ciência Rural Pereira,Roselaine Cristina; Santos,Natália de Souza; Bustamante,Fernanda de Oliveira; Mittelmann,Andrea; Techio,Vânia Helena. ABSTRACT: Chromosome doubling of Italian ryegrass genotypes ( Lolium multiflorum Lam.) adapted to the brazilian edaphoclimatic conditions is an important strategy used by breeders and aims to obtain more vigorous genotypes with better forage quality and disease resistance. The effectiveness of chromosome doubling can be measured by genetic stability and fertility rates of plants over generations. However, a common problem in the polyploidization process is the regeneration of mixoploid plants that have impaired fertility and genetic stability. The objective of this study was to verify if progenies of recently tetraploidized plants remain stable regarding DNA content and chromosome number, over two generations. Progenies of L. multiflorum plants... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chromosomal duplication; Mixoploidy; Italian ryegrass; Plant breeding. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200401 Registros recuperados: 2 Primeira ... 1 ... Última

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