tailieunhanh - Đánh giá đa dạng nguồn gen đỗ quyên bằng chỉ thị ISSR

Sự đa dạng nguồn gen của 8 mẫu đỗ quyên thu thập được từ các tỉnh Lào Cai, Vĩnh Phúc, Nam Định đã được phân tích dựa trên 22 chỉ thị phân tử ISSR; nhân bản được 954 sản phẩm PCR thuộc 200 locus từ 8 mẫu giống đỗ quyên. | Đánh giá đa dạng nguồn gen đỗ quyên bằng chỉ thị ISSR Tạp chí Khoa học Công nghệ Nông nghiệp Việt Nam - Số 11(96)/2018 Phong, ., Wattanachai, P., Kasem, S. and spp. to inhibit Drechslera oryzae causing leaf spot Luu, ., 2014. Antimicrobial substances from of rice. Journal of Agricultural Technology, 8(4): Chaetomium spp. against Pestalotia spp. causing 1691-1701. grey blight disease of tea. Journal of Agricultural Thiep, . and Soytong, K., 2015. Chaetomium spp. Technology, 10(4): 863-874. as biocontrol potential to control tea and coffee Soytong, K., 2009. Evaluation of Chaetomium biological pathogens in Vietnam. International Journal of fungicide to control Phytophthora stem and root rot Agricultural Technology, 11(6): 1381-1392. of durian. Kasetsart J. (Nat. Sci.), 3(2): 115-124. Von Arx ., Guarro, J. and Figueras, ., 1986. Tathan, S., Sibounnavong, P., Soytong, K. and Toanun Ascomycete genus Chaetomium. Beih. Nova Hedwigia, C., 2012. Biological metabolites from Chaetomium 84: 1-162. Identification of Chaetomium spp. antagonistic activity against Neoscytalidium dimidiatum causing brown spot disease of dragon fruit in Vietnam Nguyen The Quyet, Nguyen Duc Thanh, Trinh Quoc Binh, Bui Thi Lan Huong, Nguyen Duc Huy and Pham Xuan Hoi Abstract The brown spot disease caused by Neoscytalidium dimidiatum is one of the most serious diseases of Hylocereus undatus in Vietnam, causing great economic losses for dragon fruit growers. This study was conducted to determine the antagonistic activity of Chaetomium species against N. dimidiatum causing brown spot disease on dragon fruit by using bi-culture technique on potato dextrose agar medium. The results showed that Chaetomium species had the effect of inhibiting diameter and spore formation of N. dimidiatum fungus. Among them, Arcopilus cupreus had the highest inhibition of colony growth () and C. globosum had the highest inhibition of spore .