Phosphoglucoisomerase variation in Trifolium repens

Michaelson-Yeates, T. R. T.

doi:10.1007/bf00123214

Cited by 8 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…repens (Michaelson-Yeates, 1986) identified five alleles (a,b,c,d,f) controlled by a single codominant gene that behaved in a normal Mendelian manner. These alleles gave rise to ten different banding patterns and because of gene dosage, genotypes containing different proportions of the same allele could be distinguished.…”

Section: Results Lsoenzyme Analysismentioning

confidence: 99%

“…A number of research workers have suggested that C nigrescens may be one of the possible ancestors of T. repens (Brewbaker & Keim, 1953;Hovin, 1962). A survey at the PGI/2 locus of T. repens strongly suggested that C repens behaves as an amphidiploid in which one of its genomes expresses a multiallelic series whilst the other is homozygous for the c allele (Michaelson-Yeates, 1986). The results of the PGI/2 survey in this paper revealed that, out of the five alleles found in C repens, the only one that could be identified with a band in T. nigrescens was the c allele.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Reproductive characters of interspecific hybrids between Trifolium repens L. and T. nigrescens Viv.

et al. 1995

View full text Add to dashboard Cite

The amphidiploid Tnfo/ium repens L. (2n = 4x = 32) is one of the most agronomically important of the 250-300 species in the genus Trfolium. Seed production is, however, variable and often poor, because of a number of interacting reproductive and climatic factors. Improvement to those characters influencing seed production may be achieved by interspecific hybridization using a closely related species within the genus. One species which has been demonstrated to have a close affinity with T repens is the annual T nigrescens (2n =2x = 16), a prolific flower producer with a less intermittent pattern of flowering than T repens. Specific cross-combinations of T. repens and C nigrescens readily produced hybrids without the need of embryo culture. Some F1 hybrids produced large numbers of seed when backcrossed to C repens. Chromosome counts, isoenzymes and leaf markers confirmed that these were true hybrids. The F1s and BC1 s were vigorous plants demonstrating intermediate reproductive characters inherited from the two parental species. This novel approach may be a means of extending the range of heritable variation useful in the breeding and selection of T repens.

show abstract

Section: Results Lsoenzyme Analysismentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Reproductive characters of interspecific hybrids between Trifolium repens L. and T. nigrescens Viv.

et al. 1995

View full text Add to dashboard Cite

show abstract

“…Each of the isoloci apparently have a frequent allele, e.g., the allele p is estimated to have a frequency of 0.60 at the first isolocus. MICHAELSON-YEATES (1986), studying Pgi segregation in white clover cultivars, found that only one of the ancestral genomes had a multi-allelic series whilst the other was homozygous. In contrast, I find that the two most common alleles occur in both of the Pgi isoloci in the population studied (WEIDEMA 1995), just as is the case for Zdh.…”

Section: Discussionmentioning

confidence: 99%

“…The study by ENNOS (1982) provides data on an esterase locus where the alleles segregate as for a diploid. Further studies of T. repens cultivars have, however, provided segregation patterns indicative of polyploid, disomic inheritance ( MICHAELSON-YEATES 1986;PRINS et al 1989;SAWADA and YAMAUCHI 1994;MARSHALL et al 1995). It is important to clarify the inheritance patterns of this polyploid species since the subsequent methodology and treatment in studies on breeding system, population structure and gene flow depend on this.…”

mentioning

confidence: 99%

Inheritance of the Isozyme Isocitrate Dehydrogenase (IDH) in a Natural Population of Polyploid White Clover (Trifolium Repens L.)

Weidema

2004

Hereditas

View full text Add to dashboard Cite

An electrophoretic study of segregation of isocitrate dehydrogenase (IDH) was undertaken in polyploid white clover (Trifolium repem L.). The study aimed to test the conflicting theories on enzyme inheritance patterns in this species. A number of controlled selfings and reciprocal crosses were performed as well as a study of distribution of alleles in a natural Danish population of white clover. The result of the selfing experiment was that the chosen material is strongly self-incompatible, The offspring from the crosses showed that two isoloci were present and that the alleles in these segregate in a Mendelian fashion. Five different IDH-phenotypes, composed of two alleles, where found in the natural population. This contrasts with previous findings, for this and other allotetraploid species, of one variant and one invariant isolocus. Maximum likelihood analysis of the distribution of these phenotypes showed that the two alleles were equally common on an overall population basis. Each of these alleles were, however, most frequent in one of the isoloci. The findings reported here strongly support the theory that white clover is an allotetraploid, showing disomic inheritance.

show abstract

“…Michaelson-Yeates (1986) investigated the PGI enzyme system in white clover. Forty-five families were investigated and five alleles (A, B, C, D, and F) were found at the PGI-2Iocus.…”

Section: Introductionmentioning

confidence: 99%

Use of electrophoretic techniques to identify the proportion of an improved white clover cultivar (‘Grasslands Kopu’) in a mixed sward

Prins

Sanders

Wewala³

et al. 1989

New Zealand Journal of Agricultural Research

View full text Add to dashboard Cite

Phosphoglucoisomerase variation in Trifolium repens

Cited by 8 publications

References 19 publications

Reproductive characters of interspecific hybrids between Trifolium repens L. and T. nigrescens Viv.

Reproductive characters of interspecific hybrids between Trifolium repens L. and T. nigrescens Viv.

Inheritance of the Isozyme Isocitrate Dehydrogenase (IDH) in a Natural Population of Polyploid White Clover (Trifolium Repens L.)

Use of electrophoretic techniques to identify the proportion of an improved white clover cultivar (‘Grasslands Kopu’) in a mixed sward

Contact Info

Product

Resources

About