QTL mapping and candidate genes for resistance to Fusarium ear rot and fumonisin contamination in maize

  • Valentina Maschietto (Creator)
  • Cinzia Colombi (Creator)
  • Raul Pirona (Creator)
  • Giorgio Pea (Creator)
  • Francesco Strozzi (Creator)
  • Adriano Marocco (Creator)
  • Laura Rossini (Creator)
  • Alessandra Lanubile (Creator)

Dataset

Description

Abstract Background Fusarium verticillioides is a common maize pathogen causing ear rot (FER) and contamination of the grains with the fumonisin B1 (FB1) mycotoxin. Resistance to FER and FB1 contamination are quantitative traits, affected by environmental conditions, and completely resistant maize genotypes to the pathogen are so far unknown. In order to uncover genomic regions associated to reduced FER and FB1 contamination and identify molecular markers for assisted selection, an F2:3 population of 188 progenies was developed crossing CO441 (resistant) and CO354 (susceptible) genotypes. FER severity and FB1 contamination content were evaluated over 2Â years and sowing dates (early and late) in ears artificially inoculated with F. verticillioides by the use of either side-needle or toothpick inoculation techniques. Results Weather conditions significantly changed in the two phenotyping seasons and FER and FB1 content distribution significantly differed in the F3 progenies according to the year and the sowing time. Significant positive correlations (Pâ
Dati resi disponibili2017
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