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Registros recuperados : 172 | |
1. | | VALLE, C. B. do; PAGLIARINI, M. S. Biology, cytogenetics, and breeding of Brachiaria. In: SINGH, R. J. (Ed.). Genetic resources, chromosome engineering, and crop improvement: forage crops. Boca Raton: CRC, 2009. (Genetic resources, chromosome engineering, and crop improvement series; v. 5). p. 104-151. Biblioteca(s): Embrapa Gado de Corte. |
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Registros recuperados : 172 | |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
20/04/2009 |
Data da última atualização: |
29/01/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Internacional - A |
Autoria: |
FUZINATO, V. A.; PAGLIARINI, M. S.; VALLE, C. B. do. |
Afiliação: |
Veridiana Aparecida Fuzinatto, UEM; Maria Suely Pagliarini, UEM; CACILDA BORGES DO VALLE, CNPGC. |
Título: |
Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
Genetics and Molecular Research, Ribeirão Preto, v.7, n. 2, p. 424-432, 2008. |
Idioma: |
Inglês |
Conteúdo: |
Microsporogenesis in an interspecific Brachiaria hybrid, grown in the field under natural environmental conditions in Brazilian savannas, was analyzed in three distinct years of collection. Several types of meiotic abnormalities were recorded during those three years, but varied in type and frequency depending on the year. The average temperature and rainfall 15 days before collection was unusually high in those years. The percentage of abnormal meiocytes recorded was 62% in 2001, 73% in 2004, and 77% in 2005. The abnormalities observed during microsporogenesis compromised pollen viability by generating unbalanced gametes or affecting nucleolus organization. The environmental conditions under which the hybrid was growing could have affected the genetic control of meiosis. More detailed studies, under controlled conditions, are necessary to better understand the effects of environmental factors on Brachiaria microsporogenesis hybrids. |
Palavras-Chave: |
Braquiária; Brasil; Campo Grande; Mato Grosso do Sul; Microsporogênse. |
Thesagro: |
Citogenética vegetal; Hibrido; Meio ambiente; Melhoramento genético vegetal; Pastagem; Planta Forrageira. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/42707/1/gmr430.pdf
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Marc: |
LEADER 01794naa a2200277 a 4500 001 1326850 005 2018-01-29 008 2008 bl uuuu u00u1 u #d 100 1 $aFUZINATO, V. A. 245 $aEvaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years.$h[electronic resource] 260 $c2008 520 $aMicrosporogenesis in an interspecific Brachiaria hybrid, grown in the field under natural environmental conditions in Brazilian savannas, was analyzed in three distinct years of collection. Several types of meiotic abnormalities were recorded during those three years, but varied in type and frequency depending on the year. The average temperature and rainfall 15 days before collection was unusually high in those years. The percentage of abnormal meiocytes recorded was 62% in 2001, 73% in 2004, and 77% in 2005. The abnormalities observed during microsporogenesis compromised pollen viability by generating unbalanced gametes or affecting nucleolus organization. The environmental conditions under which the hybrid was growing could have affected the genetic control of meiosis. More detailed studies, under controlled conditions, are necessary to better understand the effects of environmental factors on Brachiaria microsporogenesis hybrids. 650 $aCitogenética vegetal 650 $aHibrido 650 $aMeio ambiente 650 $aMelhoramento genético vegetal 650 $aPastagem 650 $aPlanta Forrageira 653 $aBraquiária 653 $aBrasil 653 $aCampo Grande 653 $aMato Grosso do Sul 653 $aMicrosporogênse 700 1 $aPAGLIARINI, M. S. 700 1 $aVALLE, C. B. do 773 $tGenetics and Molecular Research, Ribeirão Preto$gv.7, n. 2, p. 424-432, 2008.
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Embrapa Gado de Corte (CNPGC) |
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