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Initial Quantitative Study on Incubation and Development of Lesion of Cabbage Black Spot Disease(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年05期
Page:
123-125
Research Field:
Publishing date:

Info

Title:
Initial Quantitative Study on Incubation and Development of Lesion of Cabbage Black Spot Disease
Author(s):
MA Hai-xia1; 2; QU Zhi1; LIU Ying2; 3; LI Dan1; GAO Dong-mei2; YANG Xin-dong2; 4
1.Institute of Tropical Bioscience and Biotechnology，Chinese Academy of Tropical Agricultural Sciences，Haikou,Hainan 571101；
2.College of Agriculture，Jilin Agricultural University，Changchun，Jilin 130118；
3.Institute of Plant Protection，Jilin Province Institute of Agricultural Sciences，Gongzhuling，Jilin 136100；
4.College of Development，Jilin Agricultural University，Changchun，Jilin 130600
Keywords:
black spot disease of cabbage; Alternaria brassicae; incubation period; lesion extension
PACS:
S 436.341.1+9
DOI:
-
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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Last Update: 2014-08-22