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通过多菌株接种法,三年共测定了16个水稻品种或组合对稻白叶枯病的抗感性,结果为:早稻837、鄂早6号和V优49均具中度抗病性;中稻杨稻4号、杨辐籼2号、259和DV85,具广谱高抗性;中杂汕优63和两系杂交稻WS/CY85—41属感病型,W6154S/特青属“一般抗病型”,晚稻组中,杂交稻汕优64和V优64都属感病型,鄂宜105在晚稻植期测定为感病型。鉴于V优49在早稻(3月29日措种)和早中稻(4月14日播种)植期,进行抗性鉴定的结果,以在早稻植期的结果与大田反应更一致,说明不同栽植期,对品种的抗病性反应存在很大的影响。测定品种抗病性,应在该品种大田实际种植期进行,否则可能得出与大田表现相异或完全相反的结论。
Through multi-strain inoculation method, the anti-susceptibility of 16 rice cultivars or combinations to rice bacterial leaf blight was determined over the three years. The results showed that the early resistance rice 837, E-Zao 6 and V-49 had moderate disease resistance. Yangdao 2, 259 and DV85, with broad-spectrum high resistance; Zhongzaosanyou 63 and two-line hybrid rice WS / CY85-41 were susceptible, W6154S / In the late rice group, the hybrid rice Shanyou 64 and V You 64 were both susceptible, and Yish 105 was susceptible at late rice planting. In view of the results of resistance evaluation by V-49 in early rice (March 29 planted) and early mid-season (planted April 14) planting, the result of the early rice planting is more consistent with the field response, indicating that different planted Period, the variety of disease resistance has a great impact. Determining the disease resistance of the cultivars should be carried out during the actual planting period of the field in the cultivar. Otherwise, the conclusion may be drawn that the performance is different or completely opposite to that in the field.