Abstract
Kodo millet (Paspalum scrobiculatum L.) is known for its high nutritive value, dietary fiber, antioxidant activity, as well as for drought tolerance. It is primarily grown as a grain in India and in Africa it is either cultivated or harvested in wild. Neutral—ISSR (inter simple sequence repeat) as well as functional—SCoT (start codon targeted) and SRAP (sequence-related amplified polymorphism) markers were employed for genetic diversity studies in 96 accessions of kodo millet collected from diverse regions of India. The genetic diversity parameters like average bands per primer, Polymorphic information content, Nei’s gene diversity and Shannon’s information index of 11.22, 9.69; 0.12, 0.11; 0.15 ± 0.14, 0.13 ± 0.13 and 0.26 ± 0.21, 0.22 ± 0.19 was observed with neutral and functional markers respectively. Neutral markers were showing higher values as compared to functional markers for the genetic diversity parameters as discussed. Structure based analysis placed all the accessions into four sub-groups not strictly according to their geographical locations. The accessions from Bihar followed by Karnataka were showing high diversity based on both the marker systems useful for designing exploration, conservation and germplasm enrichment strategies. Further, the set of diverse accessions selected based on these markers would serve as potential sources of unique alleles and may be exploited in future for enhancement and utilization of kodo millet germplasm. Usage of African gene pool and wild species for broadening the genetic base of Indian kodo millet was also suggested based on the present studies.
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The Authors are grateful to Dr. K. C. Bansal, Director, ICAR-NBPGR, New Delhi for financial support and thankful to DST (Department of Science and Technology, New Delhi) and Dr. Shailesh Marker Director Research, SHIATS Allahabad to facilitate and accept the research proposal.
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Yadav, Y., Lavanya, G.R., Pandey, S. et al. Neutral and functional marker based genetic diversity in kodo millet (Paspalum scrobiculatum L.). Acta Physiol Plant 38, 75 (2016). https://doi.org/10.1007/s11738-016-2090-1
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DOI: https://doi.org/10.1007/s11738-016-2090-1