Is Oryza malampuzhaensis Krish. et Chand. (Poaceae) a valid species? Evidence from morphological and molecular analyses View Full Text


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Article Info

DATE

2008-01

AUTHORS

L. Joseph, P. Kuriachan, G. Thomas

ABSTRACT

Phylogenetic relationship between O. malampuzhaensis Krish. et Chand. (2n = 4x = 48; Poaceae, Oryzeae), a South Indian endemic wild rice with a disputed taxonomic identity, and eight other species belonging to the O. officinalis complex of the genus Oryza was examined using 62 morphological characters and 445 random amplified polymorphic DNA (RAPD) markers. Multivariate and cluster analyses using both the data sets clearly separated all accessions of O. malampuzhaensis into a distinct group. Genetic distances between O. malampuzhaensis and other species in O. officinalis complex were comparable with the distance between any other two taxa with species rank in this complex. Case-by-case taxonomic treatment of O. malampuzhaensis in relation to other species examined is presented. A taxonomic key for the discrimination of O. malampuzhaensis from other species in the O. officinalis complex has been constructed. Based on the present results, we strongly argue to restore the species rank to O. malampuzhaensis, as originally proposed by Krishnaswamy and Chandrasekharan (1958). More... »

PAGES

75-94

References to SciGraph publications

  • 2001-08. Identification of genome constitution of Oryza malampuzhaensis, O. minuta,and O. punctata by multicolor genomic in situ hybridization in THEORETICAL AND APPLIED GENETICS
  • 1998-11. A genetic linkage map of Quercus robur L. (pedunculate oak) based on RAPD, SCAR, microsatellite, minisatellite, isozyme and 5S rDNA markers in THEORETICAL AND APPLIED GENETICS
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  • 2000-06. Genetic diversity and phylogenetic relationship as revealed by inter simple sequence repeat (ISSR) polymorphism in the genus Oryza in THEORETICAL AND APPLIED GENETICS
  • 1999-12. Collection and evaluation of the tetraploid Oryza officinalis Wall ex Watt (O. malampuzhaensis Krish. et Chand.) endemic to Western Ghats, India in GENETIC RESOURCES AND CROP EVOLUTION
  • 1995-09. Taxonomic separation ofKengyilia (Poaceae: Triticeae) in relation to nearest relatedRoegneria, Elymus, andAgropyron, based on some morphological characters in PLANT SYSTEMATICS AND EVOLUTION
  • 1998-04. AFLP markers for the study of rice biodiversity in THEORETICAL AND APPLIED GENETICS
  • 2004-07. Morphometric circumscription of species and infraspecific taxa in Calopogon R.Br. (Orchidaceae) in PLANT SYSTEMATICS AND EVOLUTION
  • 2000-10. Diversity in the Integrase Coding Domain of a gypsy-like Retrotransposon Among Wild Relatives of Rice in the Oryza officinalis Complex in GENETICA
  • 2001-12. Genetic variation and population structure inOryza malampuzhaensis Krish.et Chand. endemic to Western Ghats, South India in JOURNAL OF GENETICS
  • 2001-10. Discrimination between Oryza malampuzhaensis Krish. et Chand. and Oryza officinalis Wall ex Watt based on RAPD markers and morphological traits in EUPHYTICA
  • 1988-01. Location of β-amylase sequences in wheat and its relatives in THEORETICAL AND APPLIED GENETICS
  • 2005-02. Phylogenetic analysis of Oryza species, based on simple sequence repeats and their flanking nucleotide sequences from the mitochondrial and chloroplast genomes in THEORETICAL AND APPLIED GENETICS
  • 1992-03. Polymorphism and phylogenetic relationships among species in the genus Oryza as determined by analysis of nuclear RFLPs in THEORETICAL AND APPLIED GENETICS
  • 1998-07. Assessment of genetic relationships and population discrimination among Fagus sylvatica L. by RAPD in THEORETICAL AND APPLIED GENETICS
  • 1999-06. Phylogenetic relationships among Oryza species revealed by AFLP markers in THEORETICAL AND APPLIED GENETICS
  • 2004-07. Asyneuma pichleri (Campanulaceae), a neglected species of the Balkan Peninsula in PLANT SYSTEMATICS AND EVOLUTION
  • 2005-02. Identification of genomic constitutions of Oryza species with the B and C genomes by the PCR-RFLP method in GENETIC RESOURCES AND CROP EVOLUTION
  • 2006-05. Genetic Diversity in AA and CC Genome Oryza Species in Southern South Asia in GENETIC RESOURCES AND CROP EVOLUTION
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