| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Genomic behavior of hybrid combinations between elephant grass and pearl millet
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| Autores: |
Leão,Fernando Ferreira
Davide,Lisete Chamma
Campos,José Marcello Salabert de
Pereira,Antonio Vander
Bustamante,Fernanda de Oliveira
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| Data: |
2011-07-01
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| Ano: |
2011
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| Palavras-chave: |
Pennisetum glaucum
Pennisetum purpureum
DNA content
Interspecific hybrids
Mixoploidy
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| Resumo: |
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 higher in pentaploid genomic combinations than in tetraploid, and mixoploidy was observed among hexaploids. Genomic combinations 4x and 5x are mixoploid, and the variation of chromosome number within chromosomal race 5x is greater than in 4x.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000700006
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2011000700006
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.46 n.7 2011
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| Direitos: |
info:eu-repo/semantics/openAccess
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