Indian Society of Genetics & Plant Breeding

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Molecular analysis of genetic diversity among different groups of potato (Solanum tuberosum L.)

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Twenty one simple sequence repeat (SSR) markers were
used to develop SSR profile in 169 genotypes of potato
belonging to Indian accessions, tuberosum group
(Solanum tuberosum ssp. tuberosum), breeding lines,
neotuberosum, andigena group and tuberosum × andigena
derivatives. All the 21 SSR markers showed polymorphism
and were able to discriminate the genotypes studied.
Molecular markers viz., STM0037, STI0012, STM1052, STM
5127, STG0001 and STI0030 were useful due to their high
polymorphic information content and differentiating power.
A high magnitude of genetic diversity was observed in
andigena group (Solanum tuberosum ssp. andigena).
Andigena accessions were also diverse from other groups
of accessions as most of them formed a clear separate and
distinct cluster. Tuberosum group germplasm, breeding
lines, neotuberosum and Indian accessions formed a
separate cluster, whereas Indian accessions were
distributed widely. The Shannon Weaver diversity index for
Indian accessions was higher than that of breeding lines,
tuberosum germplasm, neotuberosum and tuberosum ×
andigena accessions. These results show that comparative
genetic diversity of Indian accessions is good in comparison
to other tuberosum group accessions.

Keywords: Genetic diversity, Potato, Solanum tuberosum, simple sequence repeats markers

Info

Year: 2016
Volume: 76
Issue: 2
Article DOI: 10.5958/0975-6906.2016.00028.6
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

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J. S. Torres info_circle

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