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QTL for fusarium ear rot in a multi-parent advanced generation intercross (MAGIC) population of maize

AuthorsButrón Gómez, Ana María ; Santiago Carabelos, Rogelio ; Cao Caamaño, Ana ; Samayoa López, Luis Fernando ; Malvar Pintos, Rosa Ana
Issue Date8-Apr-2018
PublisherAustrian Association of Molecular Life Sciences and Biotechnology
CitationBook of abstracts of the European Fusarium Seminar (EFS 14): PP-76, p. 99 (2018)
AbstractMulti-parent Advanced Generation Intercross (MAGIC) populations offer intermediate characteristics between bi-parental and association mapping populations. MAGIC populations enclose higher polymorphism diversity than bi-parental populations, but keeps detection power at higher levels than in association mapping populations. On the other hand, resolution is greatly improved compared to bi-parental populations due to inter-mating of multiple founders for several generations before self-crossing. A MAGIC population of approximately 700 inbred lines was generated after inter-mating for six generations a synthetic variety composed of eight inbred lines with contrasting susceptibility to Fusarium ear rot (FER). A subset of 339 inbred lines of this MAGIC population have been genotyped by genotyping by sequencing (GBS) and evaluated for resistance to FER; polymorphisms at 9 SNPs were significantly associated with resistance to FER. Significant SNPs are mapped at 53103370 and 55250804 bp in chromosome 2; at 216876071 bp (bin 3.09) in chromosome 3; at 164651229, 164651230, and 164651232 bp (bin 5.04) in chromosome 5; at 156669384bp (bin7.04) in chromosome 7; and at 45294620 and 45294624 bp in chromosome 9 (RefGen_v2). The region 160-175 Mbp in chromosome 5, where three significant SNPs were located in the current study, deserves special attention because it seems to contain allelic variability relevant for differences for resistance to FER in many backgrounds.
Description1 página-. Resumen del póster presentado en el Seminario celebrado en Tullm, Austria, entre el 8 y el 11 de abril de 2018.
Publisher version (URL)https://www.efs14.at/pub/EFS14_Abstractbook_V1.7.pdf
Appears in Collections:(MBG) Comunicaciones congresos
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