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Proceedings: Plant Sciences

, Volume 99, Issue 2, pp 131–134 | Cite as

Cytological observations on some species ofPteris L. from Kumaon (northwest Himalaya)

  • N Punetha
  • Abha Sen
Article

Abstract

The paper deals with the cytology of 10 taxa of 8 species of the genusPteris L. from Kumaon in northwest Himalaya.Pteris biaurita andPteris dactylina are apogamous triploids (n=87),Pteris excelsa andPteris quadriaurita are sexual diploids (n=29), whereasPteris vittata is a sexual tetraploid (n=58) andPteris stenophylla is an apogamous diploid (n=58).Pteris cretica is represented by diploid (n=58) and triploid (n=87) apogamous races.Pteris wallichiana is normally sexual diploid (n=29) but an apogamous diploid (n=58) form from this area is a new record. Sexual mode of reproduction is observed in 40% taxa whereas 60% are apogamous.

Keywords

Apogamy cytology Pteris L. 

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Copyright information

© Indian Academy of Sciences 1989

Authors and Affiliations

  • N Punetha
    • 1
  • Abha Sen
    • 1
  1. 1.Department of BotanyGovernment P G CollegePithoragarhIndia

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