Aneuploidy in Cyperus tenuispica from North India

抄録

Three populations of Cyperus tenuispica Steud. belonging to family Cyperaceae were collected from different localities of North India. The meiotic behavior, chromosome number, morphological analysis and pollen fertility were studied. The investigations revealed the existence of two cytotypes with n=8 in two populations and with n=7 in one population. Basic chromosome number of the Cyperus is n=8 and C. tenuispica shows same chromosome number. The plants of the population with n=7 is an aneuploid. The population with aneuploid chromosome number n=7 showed abnormal meiosis i.e., chromatin bridges, laggards, stickiness, and reduced pollen fertility. Three populations exhibit a difference in plant height, length of leaves, number of rays, number of spikelets and number of glumes per spikelet.