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Dynamics of Fungal Colonization on Cyst in Rotation and Continuous Cropping of Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2009年02期
Page:
266-270
Research Field:
Publishing date:

Info

Title:
Dynamics of Fungal Colonization on Cyst in Rotation and Continuous Cropping of Soybean
Author(s):
CHEN Li-jieLIU Xiao-jieDUAN Yu-xiWANG Yuan-yuanZHU Xiao-feng
College of Plant Protection,Shenyang Agricultural University,Shenyang 110161,Liaoning,China
Keywords:
SoybeanCystFungiDynamic of Colonization
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2009.02.0266
Abstract:
The number of cyst and the fungal colonizing on cyst in the fields of rotation and continuous cropping of soybean for six years were studied at Village Wangjia in Shenyang city.The results showed that unplump cysts were more than plump ones in both rotation and continuous fields.While the total numbers of cysts and numbers of unplump cysts isolated from continuous cropping were more than those in rotation field.Among the fungi isolated from cysts Fusarium presented the highest isolations.The frequency of isolated Fusarium was different in 5 soybean growing stages.F.oxysporum was a dominant population and its isolations were more in continuous cropping than those in rotation field.In rotation field,Penicillium and Gliocladium were another two dominant populations.The other isolated fungi were Mucor,Chaetomium and Peacilomyce.In continuous cropping field,the numbers of Gliocladium were higher but others were lower.Verticillium and Humicola were only isolated from continuous cropping field but not found in rotation field.Our results showed a trend that the numbers ofFusarium colonized on cysts were correlated with the numbers of plump cysts among tested samples.The other fungi such as Penicillium,Gliocladium and Peacilomyces affected the plump degree of cysts.

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Last Update: 2014-10-03