Genetic correlation between Fe and Zn biofortification and yield components in a common bean (Phaseolus vulgaris L.)

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dc.creatorDíaz, Santiago
dc.creatorPolania, Jose
dc.creatorAriza-Suárez, Daniel
dc.creatorCajiao V., César Hernando
dc.creatorGrajales Bedoya, Miguel Angel
dc.creatorRaatz, Bodo
dc.creatorBeebe, Stephen E.
dc.date2022-01-03
dc.date2023-04-11T08:35:42Z
dc.date2023-04-11T08:35:42Z
dc.date.accessioned2026-06-27T13:32:26Z
dc.descriptionCommon bean (Phaseolus vulgaris L.) is the most important legume for direct human consumption worldwide. It is a rich and relatively inexpensive source of proteins and micronutrients, especially iron and zinc. Bean is a target for biofortification to develop new cultivars with high Fe/Zn levels that help to ameliorate malnutrition mainly in developing countries. A strong negative phenotypic correlation between Fe/Zn concentration and yield is usually reported, posing a significant challenge for breeders. The objective of this study was to investigate the genetic relationship between Fe/Zn. We used Quantitative Trait Loci (QTLs) mapping and Genome-Wide Association Studies (GWAS) analysis in three bi-parental populations that included biofortified parents, identifying genomic regions associated with yield and micromineral accumulation. Significant negative correlations were observed between agronomic traits (pod harvest index, PHI; pod number, PdN; seed number, SdN; 100 seed weight, 100SdW; and seed per pod, Sd/Pd) and micronutrient concentration traits (SdFe and SdZn), especially between pod harvest index (PHI) and SdFe and SdZn. PHI presented a higher correlation with SdN than PdN. Seventy-nine QTLs were identified for the three populations: 14 for SdFe, 12 for SdZn, 13 for PHI, 11 for SdN, 14 for PdN, 6 for 100SdW, and 9 for Sd/Pd. Twenty-three hotspot regions were identified in which several QTLs were co-located, of which 13 hotpots displayed QTL of opposite effect for yield components and Fe/Zn accumulation. In contrast, eight QTLs for SdFe and six QTLs for SdZn were observed that segregated independently of QTL of yield components. The selection of these QTLs will enable enhanced levels of Fe/Zn and will not affect the yield performance of new cultivars focused on biofortification.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/129943
dc.identifier.urihttp://hdl.handle.net/123456789/62596
dc.languageen
dc.publisherFrontiers Media
dc.rightsOpen Access
dc.sourceDiaz, S.; Polania, J.; Ariza-Suarez, D.; Cajiao, C.; Grajales, M.; Raatz, B.; Beebe, S.E. (2022) Genetic correlation between Fe and Zn biofortification and yield components in a common bean (Phaseolus vulgaris L.). Frontiers in Plant Science 12:739033. 13 p. ISSN: 1664-462X
dc.subjectquantitative trait loci mapping-qtl mapping
dc.subjectbiofortification
dc.subjectbeans
dc.subjectzinc
dc.subjectiron
dc.titleGenetic correlation between Fe and Zn biofortification and yield components in a common bean (Phaseolus vulgaris L.)
dc.typeJournal Article

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