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Breeding increases grain yield, zinc, and iron, supporting enhanced wheat biofortification

dc.creatorVelu, G.
dc.creatorAtanda, A.S.
dc.creatorSingh, R.P.
dc.creatorHuerta-Espino, J.
dc.creatorCrespo Herrera, L.A.
dc.creatorJuliana, P.
dc.creatorMondal, S.
dc.creatorJoshi, A.K.
dc.creatorBentley, A.R.
dc.date2022-08-05T00:05:14Z
dc.date2022-08-05T00:05:14Z
dc.date2022
dc.date.accessioned2023-07-17T20:09:22Z
dc.date.available2023-07-17T20:09:22Z
dc.identifierhttps://hdl.handle.net/10883/22132
dc.identifier10.1002/csc2.20759
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7513894
dc.descriptionEstimation of the rate of genetic gain over time allows quantification of breeding progress. Here we report on the rate of grain yield and zinc (Zn) concentration increase over 11 yr of targeted wheat (Triticum aestivum L.) biofortification breeding at the International Maize and Wheat Improvement Center (CIMMYT). Data from yield trials evaluated across multiple locations in South Asia and beyond showed that average annual increases in grain yield potential of ∼1.5% and 0.9% per year gains for grain Zn and Fe concentrations. Across locations in all countries, mean yields of the five highest-yielding entries showed an annual gain of 109 kg ha−1 yr−1 in yield and 0.3 mg kg−1 for grain Fe and Zn as well as 0.66 g for the yield component thousand-grain weight. There was a strong positive correlation between Fe and Zn (r =.42) across locations, whereas no genetic no correlation was observed between grain yield and Zn (r =.05) across locations. Despite the slight negative relationship between yield and Zn, through targeted crossing and development of large segregating populations we were able to identify transgressive segregants combining increased yield and Zn concentrations. Significant differences between lines for grain micronutrient concentrations were detected, and significant location effects on grain Zn and Fe concentrations were observed. These results demonstrate that continuous and simultaneous genetic gain for grain yield and concentrations of Fe and Zn is possible in elite spring bread wheat lines with potential to deliver global impact through identification of superior parents for use by national breeding programs and the release of biofortified wheat cultivars.
dc.description1912-1925
dc.languageEnglish
dc.publisherJohn Wiley and Sons Inc
dc.relationNutrition, health & food security
dc.relationAccelerated Breeding
dc.relationGenetic Innovation
dc.relationBill & Melinda Gates Foundation
dc.relationForeign, Commonwealth & Development Office
dc.relationhttps://hdl.handle.net/10568/126499
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose
dc.rightsOpen Access
dc.source5
dc.source62
dc.source0011-183X
dc.sourceCrop Science
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectBreeding Progress
dc.subjectYield Trials
dc.subjectTargeted Crossing
dc.subjectSegregating Populations
dc.subjectGrain Micronutrient Concentrations
dc.subjectBREEDING
dc.subjectGRAIN
dc.subjectZINC
dc.subjectWHEAT
dc.subjectBIOFORTIFICATION
dc.titleBreeding increases grain yield, zinc, and iron, supporting enhanced wheat biofortification
dc.typeArticle
dc.typePublished Version
dc.coverageUSA


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