Received: 12-07-2021
Accepted: 29-10-2021
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Isolation and Selection of Trichodermaspp. Antagonists against Pathogens CausingAnthracnose in Mango
,
Le Trung Thanh
1
,
Luu Thi My Dung
1
,
Ha Viet Cuong
2
,
Nguyen Duc Thanh
1
,
Nguyen Thi Hong Hai
1
Keywords
Anthracnose, antagonistic, Colletotrichum asianum, Trichoderma spp
Abstract
Mango is a key crop and provides high economic efficiency in the Mekong Delta. However, its yield and quality are seriously affected by anthracnose disease. In order to select Trichoderma spp. with high antagonistic activity against disease fungi, 17 soil samples were collected from healthy plots in Hau Giang and other provinces in the Mekong Delta. A total of 56 strains of Trichodermaspp. were isolated and 14 strains were selected for high antagonistic activity against fungi causing anthracnose. Among those, strains Tr.X1, Tr.X2, Tr.X3, Tr.X4, T1, M2 and Tr.X2, Tr.X3 exhibited the most antagonistic activity from 77.76-86.25% inin vitro,and 75.3-72.01% in the net house. The strains were identified as Trichoderma harzianum(Tr.X2) and Trichoderma asperellum(Tr.X3) and they have potential of biological control to anthracnose in mango.
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