Identification of resistance of different corn varieties to corn brown spot
2008
Sun Bingjian | Yuan Hongxia | Xing Xiaoping
chinois. 2006～2007连续两年采用田间病圃法鉴定了不同玉米品种对褐斑病的抗病性。2006年的试验结果表明，供试的28个品种对褐斑病的抗性存在着十分明显的差异，其中达到抗病水平的有21个，占鉴定总品种的75％；中感品种6个，占鉴定总品种的21．43％；高感品种只有中科4号1个，占鉴定总品种的3．57％。2007年的试验结果表明，10个品种中达到抗病水平的有7个，占鉴定总品种的70％；中感品种3个，占鉴定总品种的30％。[著者文摘]
Afficher plus [+] Moins [-]anglais. The resistance of corn varieties to corn brown spot was tested in disease field in 2006 and 2007. The results showed that the different of resistance among these varieties were very observable in 2006. There were 21 resistant corn varieties with the frequency of 75%, 6 moderate susceptible corn varieties with the frequency of 21.43%, 1 high susceptible corn variety with the frequency of 3.57%. In 2007, the results showed that 7 resistant corn varieties with the frequency of 70%, 3moderate susceptible corn varieties with the frequency of 30%. Although there were many resistant varieties in corn production, the principal corn varieties at present, such as Zhengdan958, Xundan20 and Ludan981 were susceptible comparatively to corn brown spot.
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