บทคัดย่องานวิจัย

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Effect of saprol and delan on germination, growth and sporulation against some post-harvest pathogens.

Roy, H. S. G.;

Environment and Ecology Year: 1998 Vol: 16 Issue: 3 Pages: 594-598 Ref: 14 ref.

1998

บทคัดย่อ

Effect of saprol and delan on germination, growth and sporulation against some post-harvest pathogens.

The control potential of the 2 organic fungitoxic chemicals triforine (as Saprol 15 EC) and dithianon (as Delan 75 WP), were evaluated in vitro against some commonly occurring postharvest pathogens at 6.25, 12.5, 25, 50, 100, 200 and 400 ppm. The pathogens tested were Alternaria radicina, Aspergillus fumigatus, Botryodiplodia theobromae, Colletotrichum gloeosporioides [Glomerella cingulata], Curvularia lunata [Cochliobolus lunatus], Fusarium oxysporum, Penicillium islandicum and Sclerotium rolfsii [Corticium rolfsii]. Germination, growth and sporulation by a slide germination bioassay and a fungi toxicity test (adding fungicides to media on which fungi were subsequently grown) were used. Both triforine and dithianon showed strong spore germination inhibitory activity in the fungi tested. Growth of A. radicina, B. theobromae, C. lunatus and C. rolfsii were more sensitive to the fungicides than sporulation, but in F. oxysporum and G. cingulata sporulation was more sensitive than growth. Sporulatio

n appeared to be least sensitive to triforine compared with spore germination and growth. Dithianon showed little toxicity to growth, sporulation and germination. ED95 inhibition values for growth of all the fungi exceeded 400 ppm.