Doubling grain Fe and Zn concentration in sorghum to combat the micronutrient malnutrition in sorghum eating populations

    Ashok Kumar, A and Anuradha, K and Phuke, R and Gorthy, S and Jaganathan, J and Gaddameedi, A and Hariprasanna, K and Kalpande, H V and Mehtre, S P (2018) Doubling grain Fe and Zn concentration in sorghum to combat the micronutrient malnutrition in sorghum eating populations. In: 1st National Genetics Congress on Genetics for Sustainable Food, Health and Nutrition Security, December 14-16, 2018, New Delhi.

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    Abstract

    Dietary induced micronutrient malnutrition (MNM) is one of the greatest global challenges of our times and India has largest number of malnourished people globally. Sorghum is among the major staples and a cheapest sources of micronutrients therefore, biofortification of sorghum is of high priority. From screening of more than 4000 accessions and breeding lines we identified promising donors for Fe and Zn and established the genetic control. Fe and Zn are quantitatively inherited. While grain Zn in predominantly under additive gene control, non-additive gene actions also has role in controlling grain Fe. To develop hybrids with high Fe and Zn both parents should have high Fe and Zn. We demonstrated the prediction of F1 hybrid performance based on mid-parental value for Fe and Zn. Both Fe and Zn are positively correlated (r=0.6 to 0.8) and simultaneous improvement for Fe and Zn is feasible. Using RIL population sorghum genetic map was constructed with 2,088 markers (1148 DArTs, 927 DArTSeqs and 13 SSRs) covering 1355.52 cM with an average marker interval of 0.6cM. Forty-seven QTLs (individual) and 7 QTLs (across) environments with small maineffect and 21 co-localized QTLs for Fe and Zn were identified.

    Item Type: Conference or Workshop Item (Paper)
    Divisions: Research Program : Asia
    CRP: UNSPECIFIED
    Uncontrolled Keywords: Sorghum, Nutrition
    Subjects: Mandate crops > Sorghum
    Others > Food and Nutrition
    Depositing User: Mr Arun S
    Date Deposited: 01 Apr 2021 10:34
    Last Modified: 01 Apr 2021 10:34
    URI: http://oar.icrisat.org/id/eprint/11779
    Acknowledgement: UNSPECIFIED
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