African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12486

Short Communication

Mating system parameters in Stylosanthes guianensis (Aubl.) Sw. based on RAPD markers

Lucimara Chiari1*, Rosangela Maria Simeão Resende1 and Elizangela Tieko Matida2
1Embrapa Gado de Corte, BR 262 km 4, P.O.Box 154, 79002-970, Campo Grande, Mato Grosso de Sul, Brazil. 2Departamento de Biologia Vegetal, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil.
Email: [email protected]

  •  Accepted: 02 August 2010
  •  Published: 06 September 2010

Abstract

This study investigated the mating systems in Stylosanthes guianensis, an important tropical forage legume. Twelve progenies were analyzed with 21 polymorphic random amplified polymorphic DNA (RAPD) loci. The mating parameters estimated using the mixed mating model showed that this population practices a mixture of selfing (61.4%) and out-crossing (38.6%) for reproduction. The results also indicated that the fraction of multilocus out-crossing of about 8.2% occurred among related individuals. Low values were obtained for correlation of paternity (0.212 ± 0.046) and correlation of selfing among families (0.102 ± 0.001). These results have important implications to establish strategies of maintenance of germplasm and genetic breeding.

 

Key words: Mixed mating model, out-crossing rate, tropical forage legume.

Abbreviation

RAPD, random amplified polymorphic DNA; AFLP, amplified fragment length polymorphism.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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