New chromosome number reports in some polypetalous species from District Kangra (Himachal Pradesh), India

摘要

As a part of our programme to explore and evaluate genetic diversity of flowering plants from District Kangra (Himachal Pradesh) India, at present 150 species of Polypetalae have been meiotically worked out. It brings to light new/ varied chromosome number reports for 23 species. The species being cytologically worked out for the first time on world-wide basis include Chaerophyllum capnoides ( n = 11), Heracleum brunonis ( n = 11), Berberis ceratophylla ( n = 14), Sedum trifidum ( n = 18), Corydalis meifolia ( n = 8), C. thyrsiflora ( n = 8), Indigofera hamiltonii ( n = 8), Viola betonicifolia ( n = 7), V. canescens ( n = 6), and V. sempervirens ( n = 6) along with new intraspecific cytoypes in case of six species as Astragalus ladakensis ( n =8), Geranium pratense ( n = 13), G. wallichianum ( n = 28), Pelargonium hortorum ( n = 18), Hypericum dyeri ( n = 9) and Argemone mexicana ( n = 7). The species being cytologically worked out for the first time from India include Barbarea vulgaris ( n = 8), Capsella bursapastoris ( n = 8), Thlaspi alpestre ( n = 7), Astragalus hamosus ( n = 8), Caragana pygmaea ( n = 8), Desmodium retusum ( n = 11), Lespedeza cuneata ( n = 10) and Oxalis corymbosa ( n = 7).