Indian Society of Genetics & Plant Breeding

Molecular characterization of amaranth landraces and assessment of interspecific relationships among Amaranthus spp. (L.) using RAPD markers

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Amaranth landraces belonging to three species namely
Amaranthus tricolor, A. dubius and A. hypochondriacus
were studied for assessing genetic diversity and
interspecific relationship using RAPD markers. Eighteen
primers used for the study showed a very high level of
polymorphism. Out of the total 376 brands detected, 89%
were polymorphic. Genetic similarity indices ranged from
0.252 to 0.942 indicating a very high level of diversity
within landrace collection which is mainly attributed to
interspecific diversity. Three species distinctly formed
three different groups on clustering. Clustering was
influenced by morphological characters like leaf colour,
but no geographical trends were clear. RAPD markers
specific to each species were identified which can be
utilized in future as SCARs.
A. dubius and A.
were observed to be genetically closer
A. tricolor  

Keywords: Amaranthus, RAPD markers, genetic diversity, interspecific relationships


Year: 2007
Volume: 67
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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