Test for Ear Rot Resistance Against Fusarium verticillioides and Fusarium graminearum in Imported Maize Germplasm
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National Key R&D Program of China (2016YFE0112900)

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    Abstract:

    A total of 177 maize germplasm accessions, which were imported from the countries of USA, Canada, Romania, Germany, France and Netherlands, were evaluated for resistance against ear rot causing agent of Fusarium verticillioides (FV) and Fusarium graminearum (FG) with double toothpick inoculation technique in two calendar years (2016-2017). Out of that, two accessions (1.13% of total tested accessions) were highly resistant (HR) to FV, and 38 accessions (21.47%) were resistant (R). 75, 48 and 14 accessions showed moderate resistance (MR, 42.37%), susceptible (S, 27.12%) and highly susceptible (HS, 7.91%), respectively. Upon inoculation of FG, 12 and 66 accessions were resistant (R, 6.78%) and moderately resistant (MR, 37.29%), respectively. Meanwhile, 64 and 35 accessions were susceptible (S, 36.16%) and highly susceptible (HS, 19.77%) , respectively. No accessions with highly resistant (HR) to FG was not found. Attractively, twelve accessions with resistant to both FV and FG were identified, and they might serve as resistance resource used in maize breeding for ear rot resistance.

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History
  • Received:May 30,2018
  • Revised:November 08,2018
  • Adopted:July 09,2018
  • Online: January 14,2019
  • Published: January 16,2019
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