A biparental Vicia faba mapping population was screened under glasshouse conditions for resistance to a mixture of Fusarium avenaceum and Fusarium oxysporum, revealing several families with moderate to high resistance. Using the Vfaba_v2 Axiom SNP array, a high-density linkage map of 6,755 SNPs was constructed, enabling the identification of a major QTL on linkage group 4 associated with partial resistance to foot and root rot.
A maize near-isogenic line population designed for gene discovery and characterization of allelic effects
Authors: Zhong, T., Mullens, A., Morales, L., Swarts, K., Stafstrom, W., He, Y., Sermons, S., Yang, Q., Lopez-Zuniga, L. O., Rucker, E., Thomason, W., Nelson, R., Jamann, T. M., Balint-Kurti, P., Holland, J. B.
The study characterized 1,264 maize near‑isogenic lines derived from 18 donor inbreds crossed to the recurrent parent B73, using genotyping‑by‑sequencing and SNP‑chip data to detect 2,972 introgression segments via a novel hidden Markov model pipeline. Disease phenotyping enabled QTL mapping for foliar disease resistance, revealing extensive allelic variation among donor lines, and establishing the nNIL population as a valuable resource for dissecting complex traits in maize.