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2014年河南省玉米茎腐病大爆发,调查25个品种的发病情况。依据国家玉米品种抗病鉴定标准,浚单509为抗病品种;豫单606、金赛38和浚单3136为中抗病品种;其他21个品种均为高感品种。确定以5%的产量损失率为划分耐病性标准的临界值,耐茎腐病品种有浚单509、豫单606、金赛38、浚单3136、怀玉5288、桥玉8号、XY046、正玉10、黎乐66、伟科702和浚单29。品种的抗病性主要以病株率的高低作为划分依据,耐病性主要以产量损失率作为划分依据,以Venn图的形式展示品种的抗病性和耐病性之间的联系。
In 2014, the outbreak of corn stalk rot in Henan Province was investigated to investigate the incidence of 25 varieties. According to the national maize variety resistance evaluation standard, Xundan 509 is the resistant variety; Yudan 606, Kinsey 38 and Xundan 3136 are resistant varieties; the other 21 varieties are highly susceptible varieties. To determine the yield loss rate of 5% for the division of the critical criteria of disease resistance, resistant to stalk varieties Xun Dan 509, Yudan 606, Kinsey 38, Xun Dan 3136, Huaiyu 5288, Qiao Yu 8, XY046, Zheng Yu 10, Li Le 66, Weike 702 and Xundan 29. The disease resistance of the cultivars was mainly based on the plant disease rate, and the disease resistance was mainly based on the yield loss rate. The relationship between disease resistance and disease resistance was shown by Venn diagram.