Journal of Agricultural Research (1917) (14582241699)

Identifier: journalofagricul25assouoft (find matches)
Title: Journal of Agricultural Research
Year: 1917 (1910s)
Authors: Association of Land-Grant Colleges and Universities. Journal of agricultural research United States Agriculture, Department of. Journal of agricultural research
Subjects:
Publisher: Washington
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto



Text Appearing Before Image:
with inoculumfrom mild mosaic Green Mountain in cage. B.—(i) Plant with leaf-rolling mosaic and spindling tuber, forming a curly-dwarfcombination. (2) Leaf-rolling mosaic plant. Green Mountain variety. C.—(i) Leaf-rolling mosaic Green Mountain plant diseased as result of aphid inoc-ulation in preceding season from parent of plant in C, 2. (2) Curl3^-dwarf plant ofUncle Sam variety (Rural group). PLATE 3 A.—(i and 2) Curly-dwarf Green Mountain. Soixrce of inoculum for inoculawith aphids in cages in 1921. (Inoculated Green Moimtain in B.) B.—(i) Spindling-tuber vine from same 1921 hill as curly-dwarf plant, but inftwith only one disease from the combination. (2) Curly-dwarf or spindling-tuberrolling mosaic plant. Second generation to aphid inoculation in cages (souninoculum in A). Variety Green Mountain. C.—Rugose mosaic and healthy Irish Cobbler vines. Mosaic plant is progenyvine apparently showing streak the previous season. Degeneration Diseases of Irish Potatoes Plate 3 1/
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Journal of Agricultural Research Washington, D. C. Degeneration Diseases of Irish Potatoes Plate 4