Variability in seed mineral composition of foxtail millet (Setaria italica L.) landraces and released cultivars

Order of Publishing in Issue: 
Volume :14
Issue :3
July, 2020 - September, 2020
Page No: 
Gurulakshmi Kola[1], Puli Chandra Obul Reddy[2], Sameena Shaik[1], Mallikarjuna Gunti[1], Ramesh Palakurthi[1], H.S. Talwar[3] and Akila Chandra Sekhar[1,*]
[1]Molecular Genetics and Functional Genomics Laboratory, Department of Biotechnology, School of Life Sciences, Yogi Vemana University, Kadapa - 516005, Andhra Pradesh, India
[2]Plant Molecular Biology Laboratory, Department of Botany, School of Life Sciences Yogi Vemana University, Kadapa - 516005, Andhra Pradesh, India
[3]Plant Physiology, ICAR-Indian Institute of Millet Research (IIMR) Rajendra Nagar-500030, Hyderabad, Telangana, India

Foxtail millet (Setaria italica L.) belongs to poaceae and an important research model plant to explore nutritional pathways. The present study represents a comprehensive micronutrient report of twenty landraces, four released cultivars, and their genetic variability in micronutrient content. FT-IR analysis recorded various absorption peaks at different wavelengths corresponding to certain chemical compounds and functional groups such as carbohydrates, alkenes, proteins, sulfur compounds, amines and lipids, etc, indicate that all the studied genotypes endowed with carbohydrates, proteins and lipids. The ICP-OES analysis revealed a wide range of variation in micronutrient concentrations across the studied genotypes i.e Iron (3.69 to 7.51mg/100g), Zinc (4.54 to 5.71 mg/100g), Calcium (13.13 to 39.58 mg/100g), Potassium (219.43 to 349.47 mg/ 100g), Copper (0.60 to1.09 mg/100g), Manganese (1.05 to 1.64 mg/100g). The PCA and cluster analysis highlight a wide range of genetic variability among the genotypes. Further, these genotypes were clustered into six variables based on the micronutrient content. In overall performance of landraces better than released cultivars in terms of micronutrient content. Landraces like S1G4, S1G2; and released variety Narasimharaya recorded higher qualities of micronutrient compared to other genotypes studied. These genotypes would be useful to fish out the genes responsible for higher micronutrient occumulation and also as parental lines in breeding programmes to develop enhanced micronutrient genotypes.

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