Cytogenetic study and pollen viability of four populations of Trigonella spruneriana Boiss. (Fabaceae) in Iran

In the present paper, the cytogenetic study including meiotic chromosome number and behavior along with pollen viability were performed in 4 populations of Trigonella spruneriana Boiss. This is the first cytogeneticreport of the taxon. All populations are diploid and possess 2n = 2x = 16 chromosome number, which isconsistent with the proposed basic number of x = 8. In addition, some meiotic irregularities observed in different populations included chromosomes stickiness, B-chromosomes, chromosome bridges resulting from stickiness, the occurrence of laggard chromosomes, formation of micronuclei in tetrad cells and cytomixis. Thehighest and the lowest percentages of pollen viability were observed in populations SPR 658 and SPR 566, respectively.

Keywords:

chromosome number , Iran , meiotic behavior , pollen viability , Trigonella spruneriana