Data/hora: 06/06/2024 03:41:20

Biblioteca(s): | Embrapa Gado de Corte.
Data corrente: | 17/03/2008
Data da última atualização: | 26/01/2018
Autoria: | ADAMOWSKI, E. V.; BOLDRINI, K. R.; PAGLIARINI, M. S.; VALLE, C. B. do.
Afiliação: | Eleniza de Victor Adamowski, UEM; Kellen Regina Boldrini, UEM; Maria Suely Pagliarini, UEM; CACILDA BORGES DO VALLE, CNPGC.
Título: | Abnormal cytokinesis in microsporogenesis of Brachiaria humidicola (Poaceae: Paniceae).
Ano de publicação: | 2007
Fonte/Imprenta: | Genetics and Molecular Research, Ribeirão Preto, v. 6, n. 3, p. 616-621, 2007.
Idioma: | Inglês
Conteúdo: | Microsporogenesis was evaluated in the Brachiaria humidicola collection of the Embrapa Beef Cattle Center, represented by 60 acessions. One acession (H121) presented an abnormal pattern of cytokinesis that had never been reported in this genus. Among 900 meiocytes analyzed in the first division, 10.7% underwent precocious and multiple cytokinesis in metaphase I, fractionating the genome and the cytoplasm into two or more parts. The expected cytokinesis after telophase I did not occur. The abnormal meiocytes from the first division entered the second division but the second cytokinesis after telophase II was also abnormal. Among the 857 meiocytes analyzed in the second division, 10.9% presented abnormal, incomplete or total absence of cytokinesis. Dyads and binucleated microspores were recorded among the meiotic products. The use of this accession in the Embrapa breeding program is compromised.
Palavras-Chave: | Braquiária; Brasil; Campo Grande; Citocinese; Citokinesis; Feed crops; Feed grasses; Mato Grosso do Sul.
Thesagro: | Brachiaria Humidicola; Citogenética vegetal; Meiose; Melhoramento genético vegetal; Planta Forrageira.
Thesaurus Nal: | Brazil; Cytogenetics; Plant breeding.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/171720/1/Abnormal-cytokinesis.pdf
Registro original: | Embrapa Gado de Corte (CNPGC)
Exemplares: | CNPGC - (11816-1) - UPC - AP - -- - 458/17 -  - 458/17 - DIS