The transferability of genome-specific sequence tagged microsatellite site (STMS) primers from field pea (
P. sativum) and chickpea (
C. arietinum) to other major pulses was examined. Overall, field pea STMS primers amplified products in most of the accessions in comparison
to that of the chickpea STMS primers, which amplified products in relatively few accessions. The highest level of successful
amplifications with a single primer was 89% for field pea and 33% for chickpea primers respectively. The potential transferability
of the STMS primers among species, expressed as the total mean percentage of positive amplifications, was 53% for the field
pea STMS primers and 9% for the chickpea STMS primers. The individual mean percentage of successful transferability of field
pea STMS primers across lentil, vetch and chickpea/
Cicer sp. accessions was 60%, 39% and 62%, respectively. Whereas, for the chickpea STMS primers successful transferability was
5%, 3% and 18% for lentil, vetch and field pea, respectively. The trnasferability of these STMS primers indicates a high level
of sequence conservation in these regions across species. Together with their locus-specificity, co-dominant nature and potential
to amplify multiple alleles, their transferability makes STMS markers a powerful tool for genetic mapping, diversity analysis
and genotyping.
Key words conservation - pulse - STMS - transferability