Volume 34 Number 2 Article 1 Pages: 27-32
Year 1980 Month 4
Title: Scionwood of Apple Cultivars, Rootstocks and Species Available from the Plant Introduction Station
Author: H.E. Waterworth
The U. S. Department of Agriculture
maintains a large collection of
apple germplasm at its Plant Introduction
Station, Glenn Dale, Maryland.
The items are clonal introductions assembled
from countries during the
past 50 years.
Nearly all are included
and partially described in "Fruit and
Tree Nut Germplasm Resources Inventory"
by Fogle and Winters (2).
Their origin and the purpose for
bringing them into the U.S.A., along
with some of their unusual virtues are given in the Published Inventory
Series which is available in most State
College of Agriculture Libraries (4).
The introductions represent a diverse
collection of exotic varieties, breeding
lines, wild types, root stocks and species.
Some of the older introductions
have endured prolonged adverse environmental
conditions and exposure
to several diseases.
and leaf-spot (caused by Fabraea
maculata) are among the diseases seen
in our orchards.
Ackerman and Winters (1) described varieties in the collection
that originated in warm climates
and hence have low chilling
Full text download: APS subscribers
ISHS members & pay-per-view
(PDF 744894 bytes)
APS membership administration
ISHS membership administration