Chromosome Numbers and Male Meiotic Course Analysis in Some Wild Grasses of Tribe Aveneae from Uttarkashi District Hills, Uttarakhand, India

Abstract

Present study on male meiotic analysis of wild grass species from Uttarkashi district hills, Uttarakhand, India provides chromosome numbers for 10 species belonging to tribe Aveneae, family Poaceae. The study reports chromosome numbers firstly for Helictotrichon uniyalii (2n=4x=28, Rarhi Valley), Trisetum aeneum (2n=2x=14, Assi Ganga Valley) and Tr. clarkei (2n=4x=28, Assi Ganga Valley), and confirmed in the Indian species, Avena fatua (2n=6x=42, Purola Valley), Koeleria macrantha (2n=2x=14, Bhagirathi Valley), Phleum alpinum (2n=4x=28, Har Ki Dun Valley), P. pratense (2n=4x=28, Assi Ganga Valley), Trisetopsis aspera (2n=6x=42,; Assi Ganga Valley), T. virescens (2n=4x=28, Assi Ganga Valley and Bhagirathi Valley) and Tr. spicatum (2n=4x=28, Assi Ganga Valley, Bhagirathi Valley, and Har Ki Dun Valley). The meiotic course was normal in most of the species, although suggested a paracentric inversion in a plant of Tr. spicatum.