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1 June 2012 Concordance between Molecular and Morphological Evidence of Hybridization in the Dichanthelium acuminatum (Poaceae: Paniceae) Subspecies Complex
Rick L Hammer, Stephan L Hatch, Alan E Pepper, James R Manhart
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Abstract

To document hybridization in the Dichanthelium acuminatum complex of plants, 91 specimens were collected in southeastern Texas and assayed to determine their PCR-RFLP genotype. Two putative hybrids were confirmed as hybrids using GBSSI sequence data. Additionally, provisional evidence of the hybrid status of the specimens identified with the molecular marker was provided by multivariate analysis of a morphological dataset containing the two putative hybrid specimens and representative specimens of other members of the D. acuminatum complex. Our results provide provisional evidence for the role of hybridization in producing intermediate phenotypes.

Para documentar la hibridación en el complejo de plantas de Dichanthelium acuminatum, colectamos 91 especímenes en el sureste de Texas, y los analizamos para determinar sus genotipos PCR-RFLP. Confirmamos dos híbridos putativos por medio de los datos de secuencia de GBSSI. Además, evidencia provisional del estado híbrido de los especímenes identificados con el marcador molecular fue proveído por un análisis multivariable de datos morfológicos conteniendo los dos especímenes híbridos putativos y otros miembros representativos del complejo D. acuminatum. Nuestros resultados proveen evidencia provisional para el papel de hibridación en la producción de fenotipos intermedios.

Rick L Hammer, Stephan L Hatch, Alan E Pepper, and James R Manhart "Concordance between Molecular and Morphological Evidence of Hybridization in the Dichanthelium acuminatum (Poaceae: Paniceae) Subspecies Complex," The Southwestern Naturalist 57(2), 133-137, (1 June 2012). https://doi.org/10.1894/0038-4909-57.2.133
Received: 11 August 2010; Accepted: 1 April 2012; Published: 1 June 2012
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