• G Nageshwar

      Articles written in Proceedings – Plant Sciences

    • Numerical chemotaxonomy ofBauhinia

      G Nageshwar M Radhakrishnaiah L L Narayana

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      The chemotaxonomy of twelve species ofBauhinia is presented. From the quantified data on the distribution pattern of different chemical constituents, including the free aminoacids, it is inferred that the taxa are closely related and do not warrant splitting of the genus. However, the division of the genus based on certain selected phenolic constituents does not conform to the one on morphological grounds.

    • Distribution pattern of phenolic constituents in species ofBauhinia Linn. and its taxonomic significance

      G Nageshwar S M J Anuradha M Radhakrishnaiah L L Narayana

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      Quantified chromatographic data on the distribution pattern of phenolic constituents in 15 species ofBauhinia expressed as synthetic numerical indices and polygons indicate a close biochemical kinship among them and do not warrant the splitting of the genus, as has been done on morphologic grounds. However, the grouping of the species, based on similarity coefficients clustered successively by WPGM, does not conform to the grouping on traditional grounds.

    • Numerical chemotaxonomy ofArachis

      S M J Anuradha G Nageshwar M Radhakrishnaiah L L Narayana

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      The chemotaxonomy ofArachis has been studied with reference to the distribution pattern of different classes of secondary metabolites in general and free amino acids and phenolic constituents in particular. The chemical data are quantified to bring out the relative primitiveness/advancement of the taxa. It is found thatArachis apressipila, Arachis cardenasii andArachis hypogaea are primitive andArachis stenosperma is advanced. The chemical data are further expressed in the form of different synthetic numerical indices and depicted in polygons which point out to a fair amount of relationship among the taxa studied. From the dendrogram of cluster analysis it is evident that the genus could be divided into two infrageneric groups.

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