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The inheritance of resistance to woolly aphid, Eriosoma lani-gerum (Hsmnn.), in the apple


, : The inheritance of resistance to woolly aphid, Eriosoma lani-gerum (Hsmnn.), in the apple. J. hort. Sci, 37: 207-18

Conflicting reports concerning the resistance of 62 apple varieties show that biologic races of E. lanigerum must exist. A list is given of 18 varieties found to be immune or highly resistant in at least three independent tests; of these, Northern Spy is outstanding.

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