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对定西李家堡镇、十八里铺镇、巉口镇的小扁豆根腐病植株进行了分离,得到了130株镰刀菌单孢株系,经鉴定为6个种,其中尖孢镰刀菌100株,所占比例最大,为76.96%,茄病镰刀菌、串珠镰刀菌、木贼镰刀菌、接骨木镰刀菌、锐顶镰镰刀菌所占比例分别为9.00%、7.00%、3.90%、0.70%、3.08%。盆栽致病性测定结果表明尖孢镰刀菌、茄病镰刀菌、串珠镰刀菌和木贼镰刀菌都有致病性,是小扁豆根腐病的病原菌,其中尖孢镰刀菌为优势病原菌,并且茄病镰刀菌、串珠镰刀菌和木贼镰刀菌作为小扁豆根腐病病原在国内首次报道。幼苗接种结果表明小扁豆在发芽第8 d发病率最高,在胚根中部和基部侵染率高。
A total of 130 strains of Fusarium moniliforme were isolated from the lentil and root rot plants of Lijiapu, Shibalipu and Qiaokou in Dingxi. Six Fusarium oxysporum 100, accounting for the largest proportion of 76.96%, the proportion of Fusarium solani, Fusarium moniliforme, Ficus norujogi, Fusarium elm and Fusarium graminearum were 9.00%, 7.00%, 3.90% 0.70%, 3.08%. Potted pathogenicity test results showed that Fusarium oxysporum, Fusarium solani, Fusarium moniliforme and Forsythia suspense have pathogenicity, is the pathogen of the lentil root rot, Fusarium oxysporum is the dominant pathogen, and Fusarium solani, Fusarium moniliforme and Forsythia parroti were first reported in China as the pathogen of the lentils. Seedling inoculation results showed that the lentils in the germination of the highest incidence of the 8th day, in the radicle central and basal infection rate.