Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/37369
Title: Abnormal meiotic behavior in three species of crotalaria
Other Titles: Comportamento meiótico anormal em três espécies de Crotalaria
Keywords: Crotalaria
Cytogenetics
Cytomixis
Meiosis
Pollen grain viability
Citogenética
Citomixia
Meiose
Issue Date: Dec-2009
Publisher: Embrapa Secretaria de Pesquisa e Desenvolvimento Pesquisa Agropecuária Brasileira
Citation: FERREIRA, K. et al. Abnormal meiotic behavior in three species of crotalaria. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 12, p. 1641-1646, Dec. 2009
Abstract: The objective of this work was to compare the meiotic behavior and pollen grain viability of three species of Crotalaria. Slides for meiotic analysis were prepared by the air-drying technique. Pollen grain viability was measured by three staining procedures (Alexander's solution, tetrazolium chloride and fluorescein diacetate) and in vitro germination in a sucrose solution. Eight bivalents were observed, confirming previous reports on populations from other regions of Brazil, as well as from other countries. All species showed abnormal meiotic behavior as follows: in Crotalaria micans, cytomixis and abnormal chromosome pairing in diakinesis; in C. spectabilis, abnormal chromosome pairing in diplotene; in C. zanzibarica, shrunk nuclei in leptotene and zygotene. Pollen grains of all three species show low viability, which may be associated with the irregularities of the meiotic behavior.
URI: http://repositorio.ufla.br/jspui/handle/1/37369
Appears in Collections:DBI - Artigos publicados em periódicos

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