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(154) next ››› Plate IPlate IBlights affecting the potatoe

(38) Transparency -

Plate I.

Blights affecting the Potato in India.

FIG. 1. Bangle-blight; showing the blighted portion of the base of the
axis
Nat. size.
" 2. Section of a tuber in the early stage of disease "
" 3. " " " in a later stage of disease "
" 4. Transverse section of an axis; showing the position of the fibro-
vascular bundles
x 3.5
" 5. Spiral vessel containing mycelial filaments x 400
" 6. Large pitted vessel containing mycelium x 400
" 7. Uncoiled spiral from a vessel surrounding mycelial filaments x 400
" 8. Portion of a wood.cell containing mycelium x 400
" 9. Transverse section of a large pitted vessel partially blocked by
mycelium
x 660
" 10. Pitted vessel containing a sclerotium x 660
" 11. Portion of a pitted vessel containing mycelium and developing
sclerotia
x 400
" 12. Fructification of Phytophthora infestans x 400
" 13. Pythium-blight; oospores in the cells of the cortex x 150
" 14. Oospores from the pith x 660
" 15. Asexual sporangia from the pith x 400
" 16. Fungi occurring in connection with "Karrah,"    

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