麦类禾谷镰刀菌致病性鉴定

江苏各地禾谷镰刀菌菌株间的致病力有强弱的不同,小麦品种对江苏禾谷镰刀菌菌株的抗病性也有强弱不同,但无一品种免疫。江苏各地禾谷镰刀菌菌株的致病力和品种的抗病性都没有特异性差异,所以,还不能认为江苏的禾谷镰刀菌有不同的生理小种存在。建议在江苏可以当地毒性较强的菌株作为麦类赤霉病抗病性鉴定的对象。

IDENTIFICATION OF PATHOGENICITY OF FUSARIUM GRAMINEARUM. SCHW

In Jiangsu,the isolates of Fusarium graminearum differ significantlyin pathogenicity.Similarly,varieties of wheat are quite different in resistance to Fusarium graminearum.But neither the pathogenivity of Fusarium graminearum nor the resistance to Fusarium graminearum has specific difference.It has not been held that in Jiangsu them exist physiological races of Fusarium graminearum,but pathologicforms.It is therefore,suggested that the stronger isolates of Fusarium graminearum be selected in the study of Fusarium graminearum resistantbreeding.