Abstract：
:Cenchrus is an important component of major grass cover of world. Similar to the other major tropical grasses most of the species in genus Cenchrus are also apomictic in nature hence correct and precise identification of accessions and species are problematic and dubious. In the present study 187 decamer oligonucleotide primers were tested for PCR-based DNA amplification of six prominent species of genus Cenchrus. Of these, 32 potential repetitive and polymorphic primers were tested for identification of species-specific markers for C. ciliaris, C. setigerus, C. pennisetiformis, C. prieurri, C. biflorus and C. myosuroides. These primers yielded 51 unique RAPD markers either specific to a species (37) or shared by two or more species (14). Maximum markers were shared between C. ciliaris and C. setigerus confirming theirmore closeness to each other Primers like OPF09, OPF11, OPR15, OPAJ11, OPQ10 and OPAK20 generated strong intense bands can be used on priority in identifying the species from their natural habitat for the development of species-specific core germplasm. Due to apomictic nature this is the prime method of developing cultivars, as morphological characters are largely unable to distinguish them. The level of variation observed clearly suggest RAPD as an appropriate marker for genetic studies and in identifying the lines with species-specific markers for Cenchrus germplasm management activity and also maintaining identity and purity for proprietary reasons.
journal_name
J Environ Bioljournal_title
Journal of environmental biologyauthors
Chandra A,Dubey Asubject
Has Abstractpub_date
2010-07-01 00:00:00pages
403-7issue
4eissn
0254-8704issn
2394-0379journal_volume
31pub_type
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