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Multiple allelism at the D locus in squash
Year:
1996
Source of publication :
Journal of Heredity
Authors :
Paris, Harry
;
.
Volume :
87
Co-Authors:
Paris, H.S., Department of Vegetable Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 90000, Haifa 31-900, Israel
Facilitators :
From page:
391
To page:
395
(
Total pages:
5
)
Abstract:
Early Prolific Straightneck, a squash (Cucurbita pepo) cultivar having dark stems and lightly colored young fruits that intensify in color later in development, was crossed with an accession of Vegetable Spaghetti, a cultivar having light stems and lightly colored fruits throughout development conferred by genotype d/d I-1/I-1 I-2/I-2. All F1 plants, regardless of the direction of the cross, and all plants of the backcross to Early Prolific Straightneck were similar in stem color and developmental fruit color intensity to Early Prolific Straightneck. These characteristics segregated independently in the F2 and in the backcross to Vegetable Spaghetti. Each appeared to be under the control of a single gene, but a lower proportion than expected of individuals having a dark stem were observed in the backcross to Vegetable Spaghetti. In a test for allelism, Early Prolific Straightneck was crossed with a tester stock nearly isogenic to Vegetable Spaghetti, but which had dark stems and fruits of intense coloration later in development and was known to be of genotype D/D I-1/I-1 I-2/I-2;, this F1 was then crossed with Vegetable Spaghetti. All of the resulting progeny (n = 211) had dark stems, indicating that the dark stem of Early Prolific Straightneck is conferred by an allele of D, designated D(s). Unlike D, D(s) does not darken fruit color. D(s) is recessive to D but dominant to d.
Note:
Related Files :
allelism
article
gene locus
genotype
nonhuman
pigmentation
plant
priority journal
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More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
26940
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:26
Scientific Publication
Multiple allelism at the D locus in squash
87
Paris, H.S., Department of Vegetable Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 90000, Haifa 31-900, Israel
Multiple allelism at the D locus in squash
Early Prolific Straightneck, a squash (Cucurbita pepo) cultivar having dark stems and lightly colored young fruits that intensify in color later in development, was crossed with an accession of Vegetable Spaghetti, a cultivar having light stems and lightly colored fruits throughout development conferred by genotype d/d I-1/I-1 I-2/I-2. All F1 plants, regardless of the direction of the cross, and all plants of the backcross to Early Prolific Straightneck were similar in stem color and developmental fruit color intensity to Early Prolific Straightneck. These characteristics segregated independently in the F2 and in the backcross to Vegetable Spaghetti. Each appeared to be under the control of a single gene, but a lower proportion than expected of individuals having a dark stem were observed in the backcross to Vegetable Spaghetti. In a test for allelism, Early Prolific Straightneck was crossed with a tester stock nearly isogenic to Vegetable Spaghetti, but which had dark stems and fruits of intense coloration later in development and was known to be of genotype D/D I-1/I-1 I-2/I-2;, this F1 was then crossed with Vegetable Spaghetti. All of the resulting progeny (n = 211) had dark stems, indicating that the dark stem of Early Prolific Straightneck is conferred by an allele of D, designated D(s). Unlike D, D(s) does not darken fruit color. D(s) is recessive to D but dominant to d.
Scientific Publication
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