Volume 38 Number 3 Article 8 Pages: 126-128
Year 1984 Month 7
Title: History of the Old Home X Farmingdale Pear Rootstocks
Author: L.A. Brooks
Citation
Abstract:
In the early 1920's Professor Frank
C. Reimer, Oregon State College,
Southern Oregon Branch Experiment
Station, Medford, Oregon, began a
long and lasting research program
working toward improvement of pear
rootstocks.
Reimer's primary search
was for development of stocks resistant to fire blight (Erwinia amylovora)
along with other desirable qualities.
In his first years he worked mainly
with a number of Oriental pear species.
Although most of these stocks
turned out to be of no value, he selected four trees of Pyrus betulaefolia
that were resistant to fire blight.
A
few seedlings of P. calleryana snowed
some degree of blight resistance.
Generally speaking, neither of these species can be considered practical to
propagate by any method other than
by seed, and of course, seed trees must
be grown in a very isolated area.
Both
spp. are susceptible to winter root injury, and both produce trees of considerable vigor, especially P. betulaefolia.
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