Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years.
Main Author: | |
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Publication Date: | 2008 |
Other Authors: | , |
Format: | Article |
Language: | eng |
Source: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Download full: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/326850 |
Summary: | 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. |
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Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years.MicrosporogênseBraquiáriaCampo GrandeMato Grosso do SulBrasilMelhoramento genético vegetalPastagemCitogenética vegetalMeio ambienteHibridoPlanta ForrageiraMicrosporogenesis 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.Veridiana Aparecida Fuzinatto, UEM; Maria Suely Pagliarini, UEM; CACILDA BORGES DO VALLE, CNPGC.FUZINATO, V. A.PAGLIARINI, M. S.VALLE, C. B. do2011-10-01T01:00:07Z2011-10-01T01:00:07Z2009-04-2020082018-01-29T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleGenetics and Molecular Research, Ribeirão Preto, v.7, n. 2, p. 424-432, 2008.http://www.alice.cnptia.embrapa.br/alice/handle/doc/326850enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2013-09-20T06:33:28Zoai:www.alice.cnptia.embrapa.br:doc/326850Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542013-09-20T06:33:28falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542013-09-20T06:33:28Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years. |
title |
Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years. |
spellingShingle |
Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years. FUZINATO, V. A. Microsporogênse Braquiária Campo Grande Mato Grosso do Sul Brasil Melhoramento genético vegetal Pastagem Citogenética vegetal Meio ambiente Hibrido Planta Forrageira |
title_short |
Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years. |
title_full |
Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years. |
title_fullStr |
Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years. |
title_full_unstemmed |
Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years. |
title_sort |
Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years. |
author |
FUZINATO, V. A. |
author_facet |
FUZINATO, V. A. PAGLIARINI, M. S. VALLE, C. B. do |
author_role |
author |
author2 |
PAGLIARINI, M. S. VALLE, C. B. do |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Veridiana Aparecida Fuzinatto, UEM; Maria Suely Pagliarini, UEM; CACILDA BORGES DO VALLE, CNPGC. |
dc.contributor.author.fl_str_mv |
FUZINATO, V. A. PAGLIARINI, M. S. VALLE, C. B. do |
dc.subject.por.fl_str_mv |
Microsporogênse Braquiária Campo Grande Mato Grosso do Sul Brasil Melhoramento genético vegetal Pastagem Citogenética vegetal Meio ambiente Hibrido Planta Forrageira |
topic |
Microsporogênse Braquiária Campo Grande Mato Grosso do Sul Brasil Melhoramento genético vegetal Pastagem Citogenética vegetal Meio ambiente Hibrido Planta Forrageira |
description |
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. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008 2009-04-20 2011-10-01T01:00:07Z 2011-10-01T01:00:07Z 2018-01-29T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Genetics and Molecular Research, Ribeirão Preto, v.7, n. 2, p. 424-432, 2008. http://www.alice.cnptia.embrapa.br/alice/handle/doc/326850 |
identifier_str_mv |
Genetics and Molecular Research, Ribeirão Preto, v.7, n. 2, p. 424-432, 2008. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/326850 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503349386608640 |