Volume 47 Number 3 Article 4 Pages: 143-145
Year 1993 Month 7
Title: Isozyme Phenotypes Support the Interspecific Hybrid Origin of Prunus xdasycarpa Ehrh.
Author: D.H. Byrne
Citation
Abstract:
The black or purple apricot, Prunus xdasycarpa Ehrh., has been reported to be a naturally
occurring interspecific hybrid between apricot
(Prunus armeniaca L.) and myrobalan plum (P.
cerasifera Ehrh.). The isozyme phenotypes of
five black apricot clones support its hybrid
origin since each one has at least two plum
specific and two apricot specific alleles.
Prunus xdasycarpa Ehrh., commonly known
as the purple or black apricot, was first recorded
in 1755 (8) and described in 1791. It belongs to
the section Armeniaca (Miller) Koch (9). In the
beginning of the twentieth century Schneider
speculated that it was a natural hybrid between
P. cerasifera Ehrh. and P. armeniaca L. (5).
Evidence from several studies supports the
proposed hybrid origin of P. xdasycarpa (3, 6,
7). This species is intermediate between P.
cerasifera (myrobalan plum) and P. armeniaca
both morphologically (leaves, fruit, flowers)
and physiologically (time of bloom, cold toler
ance and tolerance to fungal diseases). Most
clones of P. xdasycarpa are not highly fertile
and produce abortive seeds with poor germina
tion and have flowers with defective pollen as is
observed in artificially produced plum x apricot
hybrids.
In addition, plants of the black apricot
are only sporadically found where the distribu
tions of apricot and the myrobalan plum over
lap.
The purpose of this study is to provide
additional evidence of hybrid origin of P.
xdasycarpa via isozymic analysis.
Full text download: APS subscribers
ISHS members & pay-per-view
Download all articles in volume 47 number 3 (for APS subscribers only) (all PDF's in .tar archive format)
(PDF 307503 bytes)
Translate:
APS membership administration
ISHS membership administration
