CYTOLOGIA
Online ISSN : 1348-7019
Print ISSN : 0011-4545
Chromosome Complement Analysis in Five Species of Peperomia Ruiz and Pav
Joseph JoseJohn. E. ThoppilLaly Mathew
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JOURNAL FREE ACCESS

1992 Volume 57 Issue 2 Pages 227-229

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Abstract

Karyomorphological studies in 5 species of Peperomia reveals that P. pellucida H. B. K. is a tetraploid with 2n=44, P. glabella var. variegata is a triploid with 2n=36 and the other three (P. magnoliaefolia A. Dietr., P. polybotrya H. B. K. and P. obtusifolia A. Dietr.) are diploids with 2n=22 chromosomes. The n=11 chromosomes of the tetraploid and diploid species seems to be pronounced and may represent the basic set from which n=12 of the triploid species might have been derived. Species of Peperomia differ in minute details of karyotype suggesting the role of minute structural alterations in speciation.

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© The Japan Mendel Society
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