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Bipolarissorokiniana能浸染草坪禾草叶片形成梭形病斑 ,并可导致芽腐、苗枯、根腐、茎基腐、鞘腐等症状 ;病原菌在 10～ 40℃下能够生长 ,最适生长温度为 2 5℃ ;病原菌分生孢子在不同萌发条件中以水平萌发较好 ;分生孢子萌发需要空气条件 ,但对营养要求不严格 ;在 2 0～ 35℃下分生孢子均可萌发 ,以 2 8℃下萌发最好 ;八种不同药剂对病原菌的抑制效果表明 ,5 0 %施保功可湿性粉剂 15 0 0倍液效果较好 ,其抑菌圈直径和抑制分生孢子萌发率分别为 46 .2mm和 81.3% ,其他几种药剂对孢子萌发也有较好的抑制作用
Bipolaris sorokiniana can infiltrate the leaves of turf grasses to form fusiform lobe and induce the symptoms of bud rot, seedling blight, root rot, stem rot and sheath rot. The pathogen can grow at 10-40 ℃, and the optimal growth temperature is 2 5 ℃. The pathogen conidia germinated well under different germination conditions. The conidial germination required air condition, but the nutrient requirement was not strict. The conidia germinated at 2 0 ~ 35 ℃, ℃ germination best; eight kinds of different agents on the pathogenic bacteria inhibitory effect showed that 50% Shi Bao Gong wettable powder 15 0 0 times better effect, the inhibition zone diameter and inhibition of conidia germination rates were 46.2mm And 81.3% respectively. Several other medicaments also had good inhibitory effect on spore germination