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Long-term survival and pathogenicity of seedborne fungi on soyabeans stored at 5 deg C.

Umechuruba, C. I. and Nwachukwu, E. O.

Tropical Science, Volume 42, Number 1, 2002. Pages 42-45.

2002

บทคัดย่อ

Long-term survival and pathogenicity of seedborne fungi on soyabeans stored at 5 deg C.

Seeds of 11 soyabean cultivars (1674-34, 1681-3F, 1800-5F, 1805, 1805-5F, 1814-2E, 536-02D, M351, Samboy 1, and Samboy 2) from Ibadan, Nigeria, were tested for the presence of fungi before and after storage at 5 deg C for 10 years. Six storage fungi, i.e. Aspergillus flavus, a member of the A. glaucus group, A. niger, A. terreus, Penicillium oxalicum, and Rhizopus stolonifer, and five field fungi, i.e. Chaetomium globosum, Colletotrichum dematium var. truncatum [C. truncatum], Fusarium oxysporum, Macrophomina phaseolina, and Phomopsis sojae [Diaporthe phaseolorum var. sojae], were found. In 2000, all except the A. glaucus sp. were recovered. The field fungi were pathogenic. The germination rate was increased after storage in 9 of the 11 cultivars.