The Impact on Survival of Eggplant Verticillium dahliae Micro-sclerotia under Different Environmental Conditions

doi:10.7668/hbnxb.2011.S2.041

Abstract

Abstract: The effect of soil temperature moisture and the time on survival of the Eggplant Verticillium dahliae micro-sclerotia was studied.Results showed that micro-sclerotia germination rate appeared a decline trend with the temperatureincreases and the time extension.Under the conditions of soil moisture of 20% and 30%,micro-sclerotia germination rate was 0 when dealing with 7 d under 40℃;The germination rate was only 7.53% and 8.60% respectively under the condition of 35℃ treating for 14 d when soil moisture was 20% and 30%.The germination rate dropped to 23.66% under the conditions of 30℃ handling 28 d.The germination rate dropped to 4.30% under the conditions of 30% soil moisture dealing with 7 d,which can significantly reduce the number of micro-sclerotia in soil.Under the conditions of natural air-dried soil,the germination rate dropped to 35.48% and 43.01% respectively under the conditions of 40℃ and 35℃ handling 14 d.High temperature combined soil moisture treatments can significantly reduce the germination rate of micro-sclerotia and effectively prevent the occurrence of eggplant verticillium wilt.

Key words: Eggplant , Verticillium dahliae, Micro-sclerotia, Germination, Soil environmental conditions

CLC Number:

S432

GUO Jing-hua, LU Xiu-yun, SHI Lin-qi, DONG Ling-di, JIAO Yong-gang, MA Ping. The Impact on Survival of Eggplant Verticillium dahliae Micro-sclerotia under Different Environmental Conditions[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(S2): 193-196. doi: 10.7668/hbnxb.2011.S2.041.

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http://www.hbnxb.net/EN/Y2011/V26/IS2/193

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