Abstract:
The cereal cyst nematode(CCN) Heterodera avenae is recognized as one of the important pests of wheat in China.In order to seek for biocontrol agents for CCN management,31 fungal strains were isolated from CCN cysts. It included Fusarium spp.,Acremonium spp.,Cladosporium spp., Aspergillus spp.,Alternaria spp., Chaetomium spp.,Ramichloridium spp.,Rhizopus spp.,Leptosphaeria spp.,Penicillium spp..The fungal number of Fusarium spp.was the most,it had 8 strains.The nematode mortality was determined by bioassay and pot experi- ment. The death rate of two Aspergillus spp.strains HN214 and HN132 at 4- fold dilution were 99.66% and 96. 56%,respectively.The inhibition of HN132 fermentation liquid on cyst production assayed by pot experiment was significantly effective at 8- fold dilution.The cysts of treatment decreased by 64.1% compared to the untreated control.Therefore,both HN132 and HN214 strains were considered as potential biocontrol agents of CCN.
Key words:
Cereal cyst nematode,
Bio- control fungi,
Molecular identification,
Cyst decay rate
CLC Number:
ZHANG Hui-min, HUANG Wen-kun, KONG Ling-an, PENG De-liang, SUN Jian-hua. Identification and Preliminary Application of Biocontrol Fungi from Cereal Cyst Nematode[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(4): 190-194. doi: 10.3969/j.issn.1000-7091.2013.04.035.