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    ARTICLE

    Microsporogenesis in tetraploid accessions of Brachiaria nigropedata (Ficalho & Hiern) Stapf (Gramineae)

    KARINA SAYURI UTSUNOMIYA*, MARIA SUELY PAGLIARINI*, CACILDA BORGES DO VALLE**

    BIOCELL, Vol.29, No.3, pp. 295-301, 2005, DOI:10.32604/biocell.2005.29.295

    Abstract The genus Brachiaria (Trin.) Griseb. has achieved considerable importance to cattle production systems, as a result of the good production and adaptation of a few cultivars to poor and acid soils of the Brazilian savannas. Many of its species and accessions are polyploid and apomictic, which limits direct hybridization. To assist the breeding program, cytogenetic characterization has been undertaken on the accessions of Brachiaria collection at the Embrapa Beef Cattle Research Center. In this study, chromosome number and meiotic behavior are reported for the Brachiaria nigropedata (Ficalho & Hiern) Stapf collection. The 20 available accessions are tetraploid… More >

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