base map (7 LGs) of 196 loci was 964.2 cM (Haldane). AIMP 92901-S1-183-2-2-B-08 is a high grain Fe and Zn line, an Iniadi parent tracing its origin to the Togolese Republic, West Africa. QTL analysis revealed a large number of QTLs for grain iron (Fe) and zinc (Zn) content. The concentration of grain Fe in the RIL population ranged between 20 and 131 ppm, and Zn from 18-110 ppm. A total
of 19 QTLs for Fe and Zn were detected, of which 11 were for Fe and 8 were for Zn. The portion of observed phenotypic variance explained by different QTLs for grain Fe and Zn concentrations varied between 9.0-31.9% (cumulative 74%) and 9.4-30.4% (cumulative 65%), respectively. Three large effect QTLs for both minerals were co-mapped in this population - one on Linkage group (LG) 1 and the remaining two on LG7. The favourable alleles for QTLs of both the mineral micronutrients were contributed by the male parent (AIMP 92901-deriv-08). Three putative epistasis interactions were observed for Fe while single digenic
interaction was for Zn. The reported QTLs may be useful in marker-assisted selection programs for seed and restorer parent breeding and population improvement programs in pearl millet.
Ôl bysGweld gwybodaeth am bynciau ymchwil 'Mapping grain iron and zinc content QTLs in an Iniadi-derived immortal population of pearl millet'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.
- Cyfadran Gwyddorau Daear a Bywyd, Athrofa y Gwyddorau Biolegol, Amgylcheddol a Gwledig - Professor of Plant Genetics
Unigolyn: Dysgu ac Ymchwil