【摘 要】
：
1989年在美国阿肯色州的Conway县,从软粒红冬小麦植株上分离出引起小麦褐斑病的德氏霉菌(Drechslera trltici-repentis).检验表明分生孢子长45-200μm,在琼脂培养基上,基部
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1989年在美国阿肯色州的Conway县,从软粒红冬小麦植株上分离出引起小麦褐斑病的德氏霉菌(Drechslera trltici-repentis).检验表明分生孢子长45-200μm,在琼脂培养基上,基部细胞呈圆锥形.在自1986年以来实行免耕和夏季休闲的81ha麦田中,该病腊熟期发病株率为95%,旗叶发病严重度为病斑占叶面积的1-10%之间.1989年因病害产量仅
Drechslera trltici-repentis causing brown spot in wheat was isolated from soft-grain red-winter wheat plants in Conway County, Arkansas, USA in 1989. The tests showed that conidia were 45-200 μm in length on agar medium , The base cells were conical in 81ha wheat field since no-tillage and summer leisure since 1986, the disease incidence rate of waxy ripe stage 95%, the severity of flag leaf disease accounted for leaf area 1-10 %. 1989 due to disease yield only
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