Abstract
Chromosome studies have been carried out on diploid, triploid and tetraploid populations of Costus speciosus distributed in the Eastern Himalayas. Detailed karyotype analysis with suitably modified techniques shows a wide range of structural alterations of chromosomes even within populations of the same ploidy level. Meiotic data reveals 18 bivalents in the tetraploid and varying numbers of bi and univalents, with rare occurrence of trivalents, in the triploids. These observations suggest the role of allopolyploidy and structural alterations of chromosomes in the evolution of these cytotypes.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
