Tytuł artykułu

Chromosome Numbers and Basic Chromosome Numbers in Monocotyledonous Genera of the Western Himalayas (India)

Tytuł czasopisma

Acta Biologica Cracoviensia s. Botanica




No 2

Autorzy publikacji

Wydział PAN

Nauki Biologiczne i Rolnicze


<jats:title>Abstract</jats:title> <jats:p>Worldwide chromosome number information has been compiled from the literature for monocotyledonous genera whose members have been cytologically studied in the last three years from Kangra District (Himachal Pradesh) and Kashmir (Jammu &amp; Kashmir) in the Western Himalayas, comprising 143 species of 86 genera in 12 families, many in the family Poaceae. Chromosome number information from the literature is supplemented with new and varied reports for 54 species/56 taxa from the present study. Overall, the chromosome numbers range from 2n=10 to 2n=120. Some species in all genera show a large number of cytotypes, clearly highlighting the role of inter- and intraspecific genetic diversity as well as polyploidy and dysploidy. The basic chromosome numbers in all 86 genera are reconsidered. Monobasic genera are more common in Poaceae, and polyba-sic genera are more common in the other 11 families. Polyploidy in the different genera ranges from 3x to 40x, and is quite high in certain genera (18x in <jats:italic>Avena, Bothriochloa, Isachne, Helictotrichon</jats:italic> and <jats:italic>Panicum;</jats:italic> 19x in <jats:italic>Saccharum;</jats:italic> 24x in <jats:italic>Tradescantia;</jats:italic> 28x in <jats:italic>Eleocharis;</jats:italic> 32x in <jats:italic>Cyperus;</jats:italic> 36x in <jats:italic>Andropogon;</jats:italic> 38x in <jats:italic>Poa;</jats:italic> 40x in <jats:italic>Dioscorea).</jats:italic> An updated checklist of chromosome number variability in these genera is given for India and world-wide.</jats:p>


Biological Commission of the Polish Academy of Sciences – Cracow Branch


2015[2015.01.01 AD - 2015.12.31 AD]


eISSN 1898-0295 ; ISSN 0001-5296