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Research center of Embrapa/Collection: Embrapa Gado de Corte - Artigo em periódico indexado (ALICE)
Date Issued: 2007
Type of Material: Artigo em periódico indexado (ALICE)
Authors: ADAMOWSKI, E. V.
VALLE, C. B. do
Additional Information: Eleniza de Victor Adamowski, UEM; Kellen Regina Boldrini, UEM; Maria Suely Pagliarini, UEM; CACILDA BORGES DO VALLE, CNPGC.
Title: Abnormal cytokinesis in microsporogenesis of Brachiaria humidicola (Poaceae: Paniceae).
Publisher: Genetics and Molecular Research, Ribeirão Preto, v. 6, n. 3, p. 616-621, 2007.
Language: en
Keywords: Braquiária
Campo Grande
Mato Grosso do Sul
Feed crops
Feed grasses
Description: 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.
Thesagro: Melhoramento genético vegetal
Citogenética vegetal
Planta Forrageira
Brachiaria Humidicola.
NAL Thesaurus: Plant breeding
Data Created: 2008-03-17
Appears in Collections:Artigo em periódico indexado (CNPGC)

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