Indian Society of Genetics & Plant Breeding

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Biofortification strategies to increase wheat nutrition and sustaining yield simultaneously

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Genetic biofortification is a strategy that uses plant
breeding techniques to produce staple food crops with
higher micronutrient levels and can be a feasible and costeffective means of delivering micronutrients to population
that may have limited access to diverse diets. The present
study reports the development of wheat with high grain
protein, yellow pigment and high zinc content in addition
to introgression of rust resistance genes to ensure
biofortification as well as yield sustainability. A convergent
cross for combining gene(s) for high protein, high yellow
pigment, high zinc and rust resistance was performed. This
included crossing BC1F2 introgression lines of cross
PBW698/BF22//PBW698 carrying grain zinc QTL
introgressed from Triticum monococcum with high protein
line BWL3560 having Gpc-B1. A set of 192 F3 lines were
evaluated for agronomic and quality traits. Molecular marker
analysis of F3 progenies for Gpc-B1 gene (Xucw108)
revealed 129 F3 lines to be homozygous positive. The
progenies showed the range of 8.96-13.92% for grain
protein content, 25.1-36.3mg/Kg for grain iron
concentration, 34.0-54.0 mg/Kg for grain zinc concentration
and 2.01-4.57ppm for grain yellow pigment content
compared to 9.65%, 26.7 mg/Kg, 42.9 mg/Kg and 3.74ppm
respectively in recipient line PBW698. Therefore, this
population constituted a useful material for identifying the
nutritionally enhanced lines.
 

Keywords: Triticum aestivum, grain iron and zinc, grain protein, Gpc-B1, rust resistance genes

Info

Year: 2019
Volume: 79
Issue: 1
Article DOI: https://doi.org/10.31742/IJGPB.79.1.3
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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