บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Maize resistance to gibberella ear rot: Symtoms, deoxynivalenol, and yield.

VIGIER, B., REID, L.M., DWYER, L.M., STEWART, D.W., SINHA, R.C., ARNASON, J.T. and BUTLER, G.

Canadian Journal of Plant Pathology 23: 99 – 105.

2001

บทคัดย่อ

Maize resistance to gibberella ear rot: Symtoms, deoxynivalenol, and yield.

The effects of different environments on maize resistance to Gibberella ear rot, disease symptoms, DON concentration and grain yield were measured in three maize inbred lines and five hybrids at six locations in eastern Canada. All genotypes were inoculated with a three – isolate macroconidial mix of Fusarium graminearum using a kernel stab inoculation technique. Results show that year to year variation is more important than variation associated with multiple locations in testing for genotypic resistance to Gibberella ear rot, according to disease symptoms and DON content. Regression models indicated that higher ear rot severity and DON concentration were associated with an increase in the total number of days from July to September with relative humidity equal to or greater than 80%.