Enhanced Wheat Genotypes via Marker-Assisted Backcrossing for Quality and Resistance Traits
This study focuses on the application of marker-assisted backcrossing to develop wheat genotypes with enhanced quality traits and resistance to various pathogens. We analyze selected genes and their contributions from adapted parents, targeting key markers for quality traits like grain protein content, starch quality, gluten strength, and resistance to leaf rust, stripe rust, and Fusarium head blight, among others. The methodology integrates traditional breeding with modern genetic techniques to produce resilient wheat varieties that meet quality and yield expectations in agricultural systems.
Enhanced Wheat Genotypes via Marker-Assisted Backcrossing for Quality and Resistance Traits
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Presentation Transcript
Selected genes % of adapted genotype Gene 0% + 50% + 75% + 87% + 94% + 97% + 98%+ 99%+ 99%+ Select Select Backcrossing Marker Assisted Selection Procedure Quality Resistance Gene Donor Adapted Parent X Grain protein content QTL.ndsu.6BS Leaf rust Lr37, Lr47, Lr21, Lr39 Gene No selection F1 hybrid Adapted Parent X Starch quality Waxy mutants Stripe Rust Yr15, Yr17, Yr5,YrHTAP Gene No selection Gene Back Cross 1 Adapted Parent X Gluten strength Glu-B3, GluA1,B1, D1 Fusarium head blight QTLfhs.ndsu.3B, QTL3A Gene Back Cross 2 Adapted Parent X Pentosan content Eyespot Pch1, Pch2 Gene Hardness Pinb-D1b, Pinb-Am1 BYD Virus Bdv2 Back Cross 3 Adapted Parent X Gene Pre-harvest sprouting QTL.1, 2, 3, 4 WSM Virus Wsm1 Select Back Cross 4 Adapted Parent X WSSM Virus Wss1 Semolina color Yp Gene Select Hessian Fly H9, H13 Adapted Parent X Back Cross 5 Gene Russian Wheat Aphid Dn2, Dn4 Select Back Cross 6 Self pollination Gene Select
