Peach scab and its control . ff from the sound tissues below by the formation of pro-tective layers of cork (fig. 2, b). These layersare formed as the result of tangential divi-sions of the subepi-dermal cells. Lessfrequently, trans-verse divisions oc-cur. Cork forma-tion is usually mostvigorous in the thirdor fourth subepi-dermal layers andordinarily extends en lruits: a, bnortiy Deiore ,. , - , , cork formation; b, soon after cork formation. At the right the section Slightly above and extends nearly to the edge of the corky layer. Camera-lucida drawings. beloW this actively (Magnified 310 ti
Peach scab and its control . ff from the sound tissues below by the formation of pro-tective layers of cork (fig. 2, b). These layersare formed as the result of tangential divi-sions of the subepi-dermal cells. Lessfrequently, trans-verse divisions oc-cur. Cork forma-tion is usually mostvigorous in the thirdor fourth subepi-dermal layers andordinarily extends en lruits: a, bnortiy Deiore ,. , - , , cork formation; b, soon after cork formation. At the right the section Slightly above and extends nearly to the edge of the corky layer. Camera-lucida drawings. beloW this actively (Magnified 310 times.) dividing region. In the case of early varieties of peaches, the fruits usually maturebefore cork formation occurs. Upon later varieties, however, the 48408°—Bull. 395—17 2 Fig. 1.—Section of a lesion froman Elberta peach fruit, showingthe early development of theparasite about the base of ahair, in close contact with theinner walls of adjacent surfacecells of the host. Camera-lucidadrawing. (Magnified 465times.). 10 BULLETIN 395, U. S. DEPARTMENT OF AGRICULTURE.
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Keywords: ., bookcentury1900, bookdecade1910, bookidpeachscabitscont395keit
