Association of Grain Iron and Zinc Content With Other Nutrients in Pearl Millet Germplasm, Breeding Lines, and Hybrids.
| Autor: | Govindaraj M; International Crops Research Institute for the Semi-arid Tropics (ICRISAT), Patancheru, India.; Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia., Kanatti A; International Crops Research Institute for the Semi-arid Tropics (ICRISAT), Patancheru, India., Rai KN; International Crops Research Institute for the Semi-arid Tropics (ICRISAT), Patancheru, India., Pfeiffer WH; HarvestPlus Program, International Food Policy Research Institute (IFPRI), Washington, DC, United States., Shivade H; International Crops Research Institute for the Semi-arid Tropics (ICRISAT), Patancheru, India. |
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| Jazyk: | angličtina |
| Zdroj: | Frontiers in nutrition [Front Nutr] 2022 Feb 02; Vol. 8, pp. 746625. Date of Electronic Publication: 2022 Feb 02 (Print Publication: 2021). |
| DOI: | 10.3389/fnut.2021.746625 |
| Abstrakt: | Micronutrient deficiency is most prevalent in developing regions of the world, including Africa and Southeast Asia where pearl millet ( Pennisetum glaucum L.) is a major crop. Increasing essential minerals in pearl millet through biofortification could reduce malnutrition caused by deficiency. This study evaluated the extent of variability of micronutrients (Fe, Zn, Mn, and Na) and macronutrients (P, K, Ca, and Mg) and their relationship with Fe and Zn content in 14 trials involving pearl millet hybrids, inbreds, and germplasm. Significant genetic variability of macronutrients and micronutrients was found within and across the trials (Ca: 4.2-40.0 mg 100 g -1 , Fe: 24-145 mg kg -1 , Zn: 22-96 mg kg -1 , and Na: 3.0-63 mg kg -1 ). Parental lines showed significantly larger variation for nutrients than hybrids, indicating their potential for use in hybrid parent improvement through recurrent selection. Fe and Zn contents were positively correlated and highly significant ( r = 0.58-0.81; p < 0.01). Fe and Zn were positively and significantly correlated with Ca ( r = 0.26-0.61; p < 0.05) and Mn ( r = 0.24-0.50; p < 0.05). The findings indicate that joint selection for Fe, Zn, and Ca will be effective. Substantial genetic variation and high heritability (>0.60) for multiple grain minerals provide good selection accuracy prospects for genetic enhancement. A highly positive significant correlation between Fe and Zn and the nonsignificant correlation of grain macronutrients and micronutrients with Fe and Zn suggest that there is scope to achieve higher levels of Fe/Zn simultaneously in current pearl millet biofortification efforts without affecting other grain nutrients. Results suggest major prospects for improving multiple nutrients in pearl millet. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The reviewer HO declared a shared affiliation, with no collaboration, with several of the authors MG, AK, KN, and HS. (Copyright © 2022 Govindaraj, Kanatti, Rai, Pfeiffer and Shivade.) |
| Databáze: | MEDLINE |
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