Sweet Potato Tuber Rot Disease In The Philippines

Manuel  K. Palomar,; A  D. Solis,; H  S. Bandala,

Sweet Potato Tuber Rot Disease In The Philippines

Manuel K. Palomar | A D. Solis | H S. Bandala

Abstract:

Tuber rot or Java black rot, caused by Diplodia theobromae (Pat.) Nowell is the most prevalent storage disease of sweet potato. Affected tubers become dry, hard and coal-black in color. Isolations made from stored sweet potato revealed a high incidence (69%) of D. theobromae alone and in combination with other fungi. The occurrence of Aspergillus, Rhizopus and Fusariurn in tubers was limited. D. theobromae was artificially inoculated to healthy tubers from field-planted sweet potato accessions. BNAS-51 variety was used as check throughout the experiment. Preliminary results indicate that 78 cultivars were resistant, 13 were moderately resistant and 78 were susceptible to tither rot.

References:

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