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采用人工浸渍接种法对5个常用亲本和近年选育的5个甘蔗新品种(系)进行黑穗病抗性鉴定;同时采用针刺法对其中4个常用亲本品种(系)进行接种鉴定。结果表明,采用浸渍法接种,只有ROC25表现为高抗,桂糖29号和桂糖02-963表现为中等,桂糖02-1156、桂糖33号、桂糖21号和桂糖02-649表现为感病,粤糖93-159、桂糖11号和ROC22号表现为高感;采用针刺法接种,桂糖21号、ROC25、粤糖93-159和桂糖11号全部表现为高感。该结果为新品种的推广和杂交亲本的选用提供依据,并探讨了不同接种方式在甘蔗黑穗病抗性评价中的作用。
Five commonly used parents and five new sugarcane varieties (lines) bred in recent years were identified for smut resistance by artificial dipping inoculation method. Four commonly used parents (lines) were identified by acupuncture method. The results showed that inoculation by immersion method showed that only ROC25 showed high resistance, Guitang No. 29 and Guitang 02-963 showed moderate, Guitang 02-1156, Guitang 33, Guitang 21 and Guitang 02-649 Manifested as susceptible, Guangdong sugar 93-159, Gui sugar No. 11 and ROC22 showed a high sense; acupuncture vaccination, gui sugar No. 21, ROC25, Guangdong sugar 93-159 and Gui sugar No. 11 all showed high sense. The results provided the basis for the promotion of new varieties and selection of hybrid parents, and discussed the role of different inoculation methods in the evaluation of sugarcane smut resistance.