KARYOLOGICAL STUDY IN THE CHILEAN RHATANY Krameria cistoidea HOOK. & ARN. (KRAMERIACEAE)

• Main Authors: Palma Rojas C., Jara Seguel P., García M., von Brand E., Araya Jaime C.
• Format: Article
• Language: English
• Published: Sociedad Argentina de Genética 2019-12-01
• Series: BAG. Journal of Basic and Applied Genetics
• Subjects: krameria; karyotype; c-banding
• Online Access: https://sag.org.ar/jbag/wp-content/uploads/2019/12/BAG_VXXX_2_2019_ART2_WEB.pdf

The karyotype of the plant species Krameria cistoidea Hook. & Arn. was studied by assessing chromosome characters such as morphology, size, and C-banding pattern. The karyotype of K. cistoidea was composed only by metacentric chromosomes in the two populations studied. The haploid set length was 51.9±2.3 µm and the mean chromosome size was 8.68±0.78 µm. Some similarities in chromosome morphology and size can be observed among K. cistoidea and K. triandra, in addition to the chromosome number 2n=12 which is conserved within the genus. K. cistoidea exhibited a symmetric banding pattern with large C-bands in the telomeres of the short and long arms of all chromosomes, except the short arm of pair 1. The relative length of the C-bands was 23.5% of the total haploid set length. These cytological results on K. cistoidea are the first data on quantitative karyotype morphology and C-banding patterns in the genus Krameria.