Evaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years.

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dc.contributorVeridiana Aparecida Fuzinatto, UEM; Maria Suely Pagliarini, UEM; CACILDA BORGES DO VALLE, CNPGC.
dc.creatorFUZINATO, V. A.
dc.creatorPAGLIARINI, M. S.
dc.creatorVALLE, C. B. do
dc.date2011-10-01T01:00:07Z
dc.date2011-10-01T01:00:07Z
dc.date2009-04-20
dc.date2008
dc.date2018-01-29T11:11:11Z
dc.date.accessioned2026-07-07T03:37:40Z
dc.descriptionMicrosporogenesis 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.
dc.identifierGenetics and Molecular Research, Ribeirão Preto, v.7, n. 2, p. 424-432, 2008.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/326850
dc.identifier.urihttp://hdl.handle.net/123456789/438887
dc.languageeng
dc.rightsopenAccess
dc.subjectMicrosporogênse
dc.subjectBraquiária
dc.subjectCampo Grande
dc.subjectMato Grosso do Sul
dc.subjectBrasil
dc.subjectMelhoramento genético vegetal
dc.subjectPastagem
dc.subjectCitogenética vegetal
dc.subjectMeio ambiente
dc.subjectHibrido
dc.subjectPlanta Forrageira
dc.titleEvaluation of microsporogenesis in an interspecific Brachiaria hybrid (Poaceae) collected in distinct years.
dc.typeArtigo de periódico

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