, Volume 43, Issue 2, pp 292–301 | Cite as

Cytology and origin of a tetraploid Trichosanthes palmata Roxb.

  • Benny M. Varghese

Cytology of male plants of a tetraploid Trichosanthes palmata Roxb. has been studied. The plants showed 44 chromosomes in root tip cells. Chromosomal associations during diakinesis and early meiotic metaphase were studied. Chromosome number and morphology, high multivalent frequency, meiotic irregularities, general morphological characters and larger size of the stomata and epidermal cells compared to the diploid relative suggest that this collection is of possible autopolyploid origin.

Although the plants are dioecious, cytologically distinet sex chromosomes were not detected neither in the diploids reported earlier, nor in the tetraploids described in the present study.


Chromosome Number Epidermal Cell Morphological Character Male Plant Chromosomal Association 
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Copyright information

© Martinus Nijhoff 1972

Authors and Affiliations

  • Benny M. Varghese
    • 1
  1. 1.Department of BotanyKerala UniversityTrivandrumIndia

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