Cytological evidence of natural hybridization in Brachiaria brizantha Stapf (Gramineae)

Two accessions of Brachiaria brizantha under cytological analysis showed 2n = 5x = 45 chromosomes. Pentaploidy probably resulted from natural hybridization between two species that were not closely related: an apomictic tetraploid male (2n = 4x = 36), and a sexual diploid female (2n = 2x = 18). The...

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Veröffentlicht in:	Botanical journal of the Linnean Society 2006-04, Vol.150 (4), p.441-446
Hauptverfasser:	Mendes, Daniela Vieira, Boldrini, Kellen Regina, Mendes-Bonato, Andréa Beatriz, Pagliarini, Maria Suely, Valle, Cacilda Borges Do
Format:	Artikel
Sprache:	eng
Schlagworte:	asynchronous meiosis Brachiaria brizantha chromosome number cytogenetic analysis genomic affinity grasses interspecific hybridization meiosis plant genetics polyploidy tropical grass Urochloa brizantha
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