Cytomorphological studies on some North Indian members of the family Verbenaceae

Abstract

This paper presents cytomorphological diversity covering the chromosome number, meiotic behavior and pollen study of 5 species on an accession basis under the family Verbenaceae from North India. Six new chromosome reports have been made for the first time which involve 2 varied chromosome counts; n=18 for Caryopteris odoraia and n=6 for Verbena officinalis-, 3 new cuploid cytotypes of diploid (2n=2x=14) for V. officinalis and hexaploid (2n=6x=42) and octaploid (2n=8x=56) for Verbena bonariensis; and B-chromosome for Vitex negimdo with 2n=32+0-2B. Morphotypes are identified for 2 species; Caryopteris odorata and Lantana camara, and cytomorphotype for Verbena officinalis. All the investigated species show abnormal meiotic behavior. © 2012 The Japan Mendel Society.