Genetic Determination of Isozyme Variation in the Bladder Campions, Silene uniflora and S. vulgaris
Prentice, Honor C. LU
and Giles, Barbara E.
(1993)
In Hereditas
118(3).
p.217-227
- Abstract
The genetic control of variation at the Pgi‐2, Pgm‐1, Pgm‐2, and Tpi‐1 loci was investigated for the gynodioecious bladder campions, Silene uniflora and S. vulgaris. The main objective of the study was to determine whether alleles 1 and 2 at Pgi‐2, which have closely similar electrophoretic mobilities, were genuine Mendelian alleles. The results from a series of crossing experiments were consistent with a Mendelian interpretation of variation at the Pgi‐2 locus and the two Pgm loci–‐observed segregation patterns did not deviate from Mendelian expectations. At Tpi‐1, however, significant deviations from expected Mendelian ratios were observed in half of the crosses. One of the deviations occurred in a heterozygote by homozygote cross,... (More)
The genetic control of variation at the Pgi‐2, Pgm‐1, Pgm‐2, and Tpi‐1 loci was investigated for the gynodioecious bladder campions, Silene uniflora and S. vulgaris. The main objective of the study was to determine whether alleles 1 and 2 at Pgi‐2, which have closely similar electrophoretic mobilities, were genuine Mendelian alleles. The results from a series of crossing experiments were consistent with a Mendelian interpretation of variation at the Pgi‐2 locus and the two Pgm loci–‐observed segregation patterns did not deviate from Mendelian expectations. At Tpi‐1, however, significant deviations from expected Mendelian ratios were observed in half of the crosses. One of the deviations occurred in a heterozygote by homozygote cross, while three (plus one borderline) deviations occurred in heterozygote by heterozygote crosses. Significant heterogeneity was also detected in the latter crosses, because the segregation ratios were skewed towards different homozygote classes. The results suggest that some form of postzygotic selection may be operating at Tpi‐1. While further experimentation is required before we can explain these deviations, we present evidence which suggests that the biases and their directions are associated with the female, and not the male lines used in the crosses.
(Less)
- author
- Prentice, Honor C.
LU
and Giles, Barbara E.
- publishing date
- 1993-06
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Hereditas
- volume
- 118
- issue
- 3
- pages
- 217 - 227
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:0027222029
- ISSN
- 0018-0661
- DOI
- 10.1111/j.1601-5223.1993.00217.x
- language
- English
- LU publication?
- no
- additional info
- Copyright: Copyright 2016 Elsevier B.V., All rights reserved.
- id
- 6c3e95ab-fb09-41f6-85d6-b8ed9ad77338
- date added to LUP
- 2021-04-22 11:37:09
- date last changed
- 2021-05-26 17:27:36
@article{6c3e95ab-fb09-41f6-85d6-b8ed9ad77338,
abstract = {{<p>The genetic control of variation at the Pgi‐2, Pgm‐1, Pgm‐2, and Tpi‐1 loci was investigated for the gynodioecious bladder campions, Silene uniflora and S. vulgaris. The main objective of the study was to determine whether alleles 1 and 2 at Pgi‐2, which have closely similar electrophoretic mobilities, were genuine Mendelian alleles. The results from a series of crossing experiments were consistent with a Mendelian interpretation of variation at the Pgi‐2 locus and the two Pgm loci–‐observed segregation patterns did not deviate from Mendelian expectations. At Tpi‐1, however, significant deviations from expected Mendelian ratios were observed in half of the crosses. One of the deviations occurred in a heterozygote by homozygote cross, while three (plus one borderline) deviations occurred in heterozygote by heterozygote crosses. Significant heterogeneity was also detected in the latter crosses, because the segregation ratios were skewed towards different homozygote classes. The results suggest that some form of postzygotic selection may be operating at Tpi‐1. While further experimentation is required before we can explain these deviations, we present evidence which suggests that the biases and their directions are associated with the female, and not the male lines used in the crosses.</p>}},
author = {{Prentice, Honor C. and Giles, Barbara E.}},
issn = {{0018-0661}},
language = {{eng}},
number = {{3}},
pages = {{217--227}},
publisher = {{Wiley-Blackwell}},
series = {{Hereditas}},
title = {{Genetic Determination of Isozyme Variation in the Bladder Campions, Silene uniflora and S. vulgaris}},
url = {{http://dx.doi.org/10.1111/j.1601-5223.1993.00217.x}},
doi = {{10.1111/j.1601-5223.1993.00217.x}},
volume = {{118}},
year = {{1993}},
}