KARYOSYSTEMATICS STUDY OF SOME ASTERACEAE SPECIES (COMPOSITAE) IN SAUDI ARABIA

Wadha Khlif Dahawy Alshammary ^1*, Dr. Mohey El-den Kamel Mohammed Behery²

1.Saudi Arabia, Hafr Albatin University, Biology department, 2. College of ScienceImam Bin Abdulrahman bin Faisal University, Biology department, College of Science.

Corresponding Author: Wadha Khlif Dahawy Alshammary, Saudi Arabia, Hafr Albatin University, Biology department, Email: fofo88865@hotmail.com.

Citation: Wadha Khlif Dahawy Alshammary^1*, Dr. Mohey El-den Kamel Mohammed Behery² (2024). Karyosystematics Study of Some Asteraceae Species (Compositae) In Saudi Arabia. Eco Science Journal.2024 1(6).

Copyrights © 2024, Wadha Khlif Dahawy Alshammary. This article is licensed under the Creative Commons Attribution-NonCommercial-4.0-International-License-(CCBY-NC)

Abstract

Chromosome numbers were reported for 10 species of family Asteraceae from Saudi Arabia. The new count was reported in Pulicaria schimperi L. Karyotype analysis were made for all species, Conyza bonariensis (L.) Cronquist 2n=18, Bidens pilosa L., 2n=70, Pluchea dioscoridis (L.) DC. 2n=32, Pulicaria schimperi L. 2n=12, Lactuca serriola L. 2n=18, Launaea capitata (Spreng.) Dandy 2n=18, Launaea resedifolia (L.) Kuntze 2n=18, Launaea nudicaulis (L.) Hook. F. 2n=18, Reichardia tingitana (L.) Roth 2n=16, and Sonchus oleraceus L. 2n=32, belonging to 4 tribes: Astereae, Heliantheae, Inulea and Lactuceae. Pulicaria schimperi L. has the lowest chromosome number (2n=12), while the highest number of (2n=70) is recorded in Bidens pilosa L. 

Keywords: Asteraceae (Compositae), Karyotype, Chromosome count, New count, Saudi Arabia.