MA Hai-xia,QU Zhi,LIU Ying,et al.Initial Quantitative Study on Incubation and Development of Lesion of Cabbage Black Spot Disease[J].Northern Horticulture,2013,37(05):123-125.
白菜黑斑病病斑潜育显症及扩展的初步定量研究
- Title:
- Initial Quantitative Study on Incubation and Development of Lesion of Cabbage Black Spot Disease
- 文章编号:
- 1001-0009(2013)05-0123-03
- 分类号:
- S 436.341.1+9
- 文献标志码:
- A
- 摘要:
- 以“掰帮菜”白菜为试材，采用室内鉴定和田间试验相结合的方法，对白菜黑斑病（Cabbage black spot disease）病斑的潜育、显症及扩展进行了初步研究。结果表明：病害潜育期较短，一般约为2～3 d；温度是影响潜育期的重要因子，在30℃以下温度越高其潜育期越短，30℃时12 h就可完成潜育。白菜黑斑病病斑的显症期约为4 d。不同病斑扩展日数不同，约为8～13 d。在病斑的初龄阶段扩展较快，4～5 d即达最大长度的一半，14 d病斑接近最大，扩展到的最大长度约为3.4～5.0 mm，病斑长度（y）和病斑日龄（x）的关系大体为直线，回归方程为：y=1.3827+0.2073x（r=0.9951）。
- Abstract:
- Taking ‘Baibangcai’ cabbage as material，lesion incubation and development of cabbage black spot disease were studied in laboratory and field.The results showed that the incubation period of the disease was 2~3 days under natural condition.Temperature had obvious effect on incubation period.The higher the temperature，the shorter the incubation period，and the incubation period was 12 hours over 30℃.Symptomatic appearance of the disease was about 4 days.The extension period of lesion the disease was 8~13 days and different lesion had different extension period.The different lesion extend different length，was 3.4~5.0 mm.The lesion extended quickly at the beginning and reached the half of the greatest length at 4~5 d，lesion reached the biggest length at 14 d.The linear regression equation of lesion length (y) to date (x) was concluded，which was y=1.3827+0.2073x(r=0.9951).
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备注/Memo
第一作者简介：马海霞（1978-），女，博士，助理研究员，研究方向为植物真菌病害。
责任作者：杨信东（1945-），男，硕士，教授，研究方向为植物真菌病害。E-mail:1092911272@qq.com.基金项目：中国热带农业科学院热带生物技术研究所引进人才科研启动资助项目（ITBB120301）。
收稿日期：2012-11-06