烤烟品种和打顶时期对赤星病抗性的作用

Effect of Variety and Topping Period on Flue-cured Tobacco Brown Spot

摘要: 对生产上主要栽培的烤烟品种和抗源材料进行抗病性比较,结果表明,中烟90、净叶黄、许金4号抗病性较强,K326、G28属中抗品种,G140、NC89、红花大金元等为感病品种。通过烟株不同时期打顶试验,表明现蕾期打顶较盛花期打顶烟草赤星病发病重,差异达到极显著水平。

Abstract: The field experiments showed that the disease resistance of tobacco varieties to brown spot was different.Zhongyan90, Jingyehuang and Xujin4 had high resistance to tobacco brown spot, G140, NC89 and Honghuadajinyuan had lower resistance.The disease could be controlled by later topping in suitable date.