Study on Biological Characteristics of Pepper Sclerotinia sclerotiorum

The biological characteristics of Sclerotinia sclerotiorum were studied.The results showed that the temperature range of mycelium growth in 10-30 ℃ and 20-25 ℃ was the optimum.The mycelium could grow from pH 3 to pH 11 and pH 5-7 was favorable.Mycelium growth was worst in sodium nitrate and the best in alanine and peptone.The sucrose was more favorable for mycelial growth than that for fructose.Mycelium lethal temperature was 55 ℃ for 10 min.The optimum temperature of sclerotia germination was from 10 to 30 ℃.The sclerotia grew well at medium except rice bran medium,the sclerotia could germinate from pH 3 to pH 11 and the best was pH 3-7.The fructose was not beneficial for the sclerotia germination and the peptone was more favorable for sclerotia germination than others.The sclerotia lethal temperature was 70 ℃ for 10 min.The sclerotia could not germinate when sclerotia was soaked for more than 45 days.