Systematic Studies In The Genus Piper
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Date
1983
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Abstract
A survey was conducted in Sri Lanka to collect and conserve different species of Piper. Among 69 accessions collected and established at Matale Research Station, 24 were used for a detailed study of morphological, abaxial leaf epidermal features, chromosome numbers and phenolic constituents. On the basis of morphological characters, 24 accessions were identified as Piper nigrumh., P. betle L., P.longumL., P. argyrophyllum Miq., P. sylvestre Lam., P. attenuatum Buk. Ham., P. chuvya, P. thwaitseii C. Dc, P. trineuron Miq. and P. zeylanicum Miq. Of these P. attenuatum is reported for the first time from Sri Lanka. The data available from the study of chromosome number, phenolic constituents and abaxial leaf epidermal characteristics suggest that P. sylvestre and P. argyrophyllum are conspecific and a specific status is assigned to P. chuvya which was earlier considered as a variety of P. betle. Variation in chromosome number was observed among the different species ranging from 2n = 26 to 65. Stomatal index and phenolic constituents are found to be specific for some species.
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J.Plantn.Crops 1983 v-11 i-2 p-139-150