Chromosome number and morphology of some accessions of four Lallemantia Fisch. & C.A. Mey. (Lamiaceae) species from Iran

Asghar Kamrani | Ali Reza Dolatyari

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=31638
Date :  2015/12/01
Publish in :    Wulfenia


Keywords :Chromosome, accessions, Lallemantia, Fisch, Lamiaceae, species

Abstract :

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Summary: Lallemantia is a small genus comprising only five species. The upper corolla lip with two internal longitudinal folds differentiates the genus from closely related taxa. Uniform chromosome number and ploidy level have already been reported for the genus. In order to provide chromosomal data and to trace the probable chromosome number changes both at inter- and intra-specific levels, we studied 10 accessions of four Lallemantia species from Iran. In accordance with previous results, we found 2n = 2x = 14 for all the accessions studied; B-chromosomes were only found in one accession of L. iberica. In addition, detailed karyotypic data are presented for each accession. The mean value of centromere indices, 0.398, demonstrated the symmetric karyotype for the whole genus. Altogether, our data indicate that Lallemantia is a karyologically stable genus.