



- Công bố khoa học và công nghệ Việt Nam
Bảo vệ thực vật
Xác định chủng nấm gây bệnh thán thư hành lá nặng tại một số tỉnh đồng bằng sông Cửu Long
Identification of fungal strains causing severe scallion anthracnose disease in some provinces in the Mekong Delta
Khoa học (Đại học Cửu Long)
2021
24-25
115-122
2354-1423
Twenty anthracnose strains collected in Dong Thap and Vinh Long province were cultured on PDA, spores collected and sprayed on Welsh onions under net house conditions. The results o f disease rate and disease index showed that strain PHVL2 was the most harmful strain. With the characteristics o f conidiomata, shape and size of conidia and appressoria have identified strain PHVL2 belonging to genus Colletotrichum. The results o f gene sequencing of the ITS1-ITS4 region and comparison with the data on the gene bank have determined that the PHVL2 strain is very closely related to Colletotrichum gloeosporioides species when the per. ident of samples are over 99.6%.
TTKHCNQG, CVv 484