บทคัดย่องานวิจัย

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Development of Fusarium head blight and accumulation of deoxynivalenol in barley sampled at different growth stages.

PROM, L.K., HORSLEY, R.D., STEFFENSON, B.J. and SCHWARZ, P.B.

Journal of the American Society of Brewing Chemists 57 : 60-63.

1999

บทคัดย่อ

Development of Fusarium head blight and accumulation of deoxynivalenol in barley sampled at different growth stages.

In 1995 and 1996, a study was conducted to assess the development of Fusarium head blight (FHB) and the accumulation of DON in cv.  Stander barley at the heading, early milk, late milk, soft dough, hard dough and mature developmental stages.  In 1995, FHB severity increased markedly from the heading (0.7%) to soft dough (9.6%) developmental stages, and DON concentration increased from the heading (4.9 mg/kg) to late milk (36.8 mg/kg) stages.  The increase in FHB and DONd coincided with frequent and significant precipitation.  In 1996, the level of FHB was less than 1% up to the soft dough stage, after which it increased from 1.7% at the hard dough stage to 8.2% at maturity.  DON concentrations were low and ranged from 0.2 to 0.7 mg/kg after the heading stage.  These data indicate that FHB severity and possibly DON concentration can increase in barley at any time between the heading stage and maturity.