6BassimbaD D M, Mira J L, Vicent A.First Report of Alter-naria japonica Causing Black Spot of Turnip in Spain[J]. Plant Disease,2013,97(ll)..1 505.
7White T J.Lee S.Taylor J,Amplification and direct sequen- cing of fungal ribo so mal RNA gene for phylogen ctics.In.. PCR Protocools. A guide to me thods and appfication[M]. Academic Pr s.San Diego.Califo a.1990 : 315-322.