Cytomorphological studies on some North Indian members of the family Verbenaceae.

摘要

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 odorata and n=6 for Verbena officinalis; 3 new euploid 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 negundo 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.