Ảnh hưởng của chitosan chiếu xạ kết hợp nấm Trichoderma tới bệnh chết héo Phytophthora spp. trên cây dâu tây

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Tác giả: Hữu Tư Lê, Thị Thái Hòa Lê, Văn Toàn Lê, Xuân Cường Lê, Duy Hạng Nguyễn, Tấn Mân Nguyễn, Trọng Hoành Phong Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại: 571.962 Physiology and related subjects

Thông tin xuất bản: Khoa học & Công nghệ Việt Nam, 2018

Mô tả vật lý: 38-41

Bộ sưu tập: Metadata

ID: 534213

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Effects of irradiated chitosan in combination with Trichoderma on Phytophthora spp. The cause of wilt disease in strawberry has been studied. The effects of irradiated chitosan on strawberry growth and the ability to control Phytophthora spp, were experimented with greenhouse and in vitro conditions. The results show that, Phytophthora spp. causing wilt disease in strawberry plants is very sensitive to irradiated chitosan. Irradiated chitosan with a molecular weight of 30 kDa with a concentration of 800 ppm completely inhibited the growth of mycelium of Phytophthora spp. Irrigation of chitosan irradiated into strawberry-contaminated soil was Phytophthora spp., Then Trichoderma was added to completely reduce the morbidity of Phytophthora spp. cause and make strawberry trees grow better. The objective of this study was to assess the effect of irradiated chitosan and Trichoderma on growth and prevention of wilt disease in strawberry.Hiệu ứng của chitosan chiếu xạ kết hợp với nấm Trichoderma đối với Phytophthora spp. gây bệnh chết héo ở cây dâu tây đã được nghiên cứu. Ảnh hưởng của chitosan chiếu xạ đối với sự sinh trưởng cây dâu tây và khả năng phòng trừ bệnh Phytophthora spp, đã được thực nghiệm ở điều kiện nhà kính và in vitro. Kết quả cho thấy, Phytophthora spp. gây bệnh chết héo trên cây dâu tây rất nhạy cảm với chitosan chiếu xạ. Chitosan chiếu xạ có khối lượng phân tử 30 kDa với nồng độ 800 ppm đã ức chế hoàn toàn sự sinh trưởng của hệ sợi nấm Phytophthora spp. Tưới chitosan chiếu xạ vào đất trồng cây dâu tây đã được gây nhiễm Phytophthora spp., sau đó bổ sung thêm nấm Trichoderma làm giảm hoàn toàn tỷ lệ bệnh chết héo do nấm Phytophthora spp. gây ra và làm cho cây dâu tây sinh trưởng tốt hơn. Mục tiêu của nghiên cứu này là đánh giá hiệu ứng của chitosan chiếu xạ và nấm Trichoderma đến khả năng sinh trưởng và phòng trừ bệnh chết héo ở cây dâu tây.

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