A karyological study of some endemic Trigonella species (Fabaceae) in Iran

Karyotypes of nine populations belonging to six endemic species of the genus Trigonella (Trifolieae/Fabaceae) studied in this survey. All studied species are perennial and recorded only from Northeast of Iran. Excluding the karyotype of Trigonella subenervis, which was previously reported, all of the other species studied here (six species) for the first time. Our results present that all assessed genotypes are diploid with 2n=2x=16 and the chromosomal basis of x=8. In addition to the chromosome counts, length of long and short arms of the chromosome and their ratios analyzed and presented in this study.