Current Status of Seed-borne Mycoflora on Rice Seed OM6976 and OM4218 and Efficacy of Plant Extracts on Fusarium spp. Isolated from Rice Seed

Received: 24-11-2017

Accepted: 25-12-2017

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Issue: Vol. 15 No. 12 (2017)

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NÔNG HỌC

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Toan, L., Nhung, V., & Thuyen, H. (2024). Current Status of Seed-borne Mycoflora on Rice Seed OM6976 and OM4218 and Efficacy of Plant Extracts on Fusarium spp. Isolated from Rice Seed. Vietnam Journal of Agricultural Sciences, 15(12), 1605–1612. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/420

Current Status of Seed-borne Mycoflora on Rice Seed OM6976 and OM4218 and Efficacy of Plant Extracts on Fusarium spp. Isolated from Rice Seed

Le Thanh Toan (*) 1 , Vo Thi Tuyet Nhung 1 , Ho Minh Thuyen 1

  • 1 Sinh học Ứng dụng, Trường đại học Cần Thơ

    • Keywords

    Discoloration of rice grain, seed-borne mycoflora

    Abstract


    In current rice production, discoloration of grain is one of the most important diseases, leading to reduction in yield and deterioration in grain quality. The research was carried out to obtain current status of rice cultivation and seed-borne mycoflora of two rice varieties OM6976 and OM4218 at Chau Phu district, An Giang province. In addition, in vitro activity of plant extracts was tested against Fusarium sp. that are common seed-borne infection among rice seed mycoflora. Results of interview from 60 households showed that grain discoloration, blast and bacterial leaf blight were the important rice diseases. Examination on seed-borne mycoflora from 6,000 rice grains indicated that there were 12 kinds of fungi on both rice varieties, namely Fusarium sp., Curvularia sp., Pinatubo oryzae, Trichoconis padwickii, Tilletia barclayana, Nigrospora sp., Acremonium sp., Penicilium sp., Aspergillus sp., Chaetomium globosus, Bipolaris oryzae and Phoma sorghina. Among them, Fusarium sp. accounted for high percentage (29.5%) in variety OM6976. The rate of Curvularia sp. was high at approximately 24.6% in variety OM4218. Eupatorium leaf extracts at concentration of 2, 4 and 8% highly inhibited the growth of Fusarium sp.

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