Association of four isozyme loci with a reciprocal translocation between 1R/4R chromosomes in cultivated rye (Secale cereale L.)

Figueiras, A. M.; Elorrieta, M.A.; Benito, C.

doi:10.1007/bf00288803

Cited by 20 publications

(8 citation statements)

References 19 publications

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“…The isozyme loci analysed in this work are located on A chromosomes (Figueiras et a!., 1985) and we do not expect a direct correlation between these loci and the B chromosomes. When we analysed the effect of individual loci in the different components of the fitness studied (Table 3) we observed no correlation between specific loci and either tillering and seeds per plant.…”

Section: Discussionmentioning

confidence: 98%

Genic heterozygosity and fitness in rye populations with B chromosomes

et al. 1992

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Four Korean rye populations with B chromosome frequencies ranging from 15 to 55 per cent were electrophoretically analysed. The values of several components of fitness were also estimated in 1 year at a single density in plants with a different number of heterozygous loci and B chromosomes. All the fitness components decreased as the number of Bs per plant increased. A significant positive correlation between the number of heterozygous loci and both tillering and offspring was found. In addition, a significant negative correlation between the frequency of plants with Bs and the mean heterozygosity was observed. This latter relationship might be due to the high rate of selfing displayed by populations with high frequency of plants carrying Bs, leading to a low gemc heterozygosity.

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Section: Discussionmentioning

confidence: 98%

Genic heterozygosity and fitness in rye populations with B chromosomes

et al. 1992

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“…Translocations are common in rye, wheat and triticale (Lukaszewski and Gustafson 1983;Figueiras et al 1984;Marais and Marais 1994;Apolinarska 1996). Recombination of homeologous genomes in intergeneric hybrids may also be responsible for changes in the 2-D patterns of amphiploids, for example recombinations between Festuca pratensis and Lolium multiflorum lead to almost perfect mixing of the two genomes (Zwierzykowski et al 1998).…”

Section: Discussionmentioning

confidence: 99%

Pollen proteins after two-dimensional gel electrophoresis and pollen morphology of the amphiploids Aegilops kotschyi and Ae. variabilis with Secale cereale

Kalinowski¹,

Winiarczyk

Wojciechowska³

2001

Sexual Plant Reproduction

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Proteins from pollen of parent forms and amphiploids Aegilops variabilis × Secale cereale and Ae. kotschyi × S. cereale, obtained by in vitro propagation or colchicine treatment of F 1 hybrids, were subjected to a study by two-dimensional (2-D) electrophoresis. Qualitative and quantitative diversities of protein patterns were revealed for the amphiploid pollen. The majority of peptides found in the parent forms were also present in the patterns of the amphiploid pollen; however, some of the parent-form-peptides were not expressed and proteins characteristic only of the amphiploids appeared. In the 2-D combined protein pattern obtained for the parent forms, amphiploids Ae. variabilis × S. cereale produced pollen with a poorer spectrum of proteins. In amphiploid 408B, obtained from treated the F 1 generation with colchicine, the 2-D pattern revealed the presence of less than 50% of the proteins recorded for the parent forms. Pollen grain morphology was studied under a scanning microscope. The structure and shape of exines differed from those of the parents. In the parent forms the pollen grains had only one pore, while in amphiploid pollen, one, two or three pores were observed. Possible explanations for the differences in the 2-D patterns of amphiploids and their parent forms (impoverishment of the protein spectrum and appearance of new peptides) are (1) somaclonal variation and mutagenic activity of colchicine, (2) suppression of structural genes, (3) activity of regulators and (4) translocations. Pollen grains with two or even three pores could appear as a result of the independent activity of the genes from three amphiploidal genomes.

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“…Three isozymatic systems, Malate dehydrogenase (MDH, EC 1.1.1.37), Phosphoglucose mutase (PGM, EC ,2.7.5.1) and Glucose phosphate isomerase (GPI, EC 5.3.1.9) were assayed after horizontal 12% starch gel electrophoresis using the buffers and staining methods described by Figueiras et al (1985) and Chenicek & Hart (1 987).…”

Section: Isoqme Assaysmentioning

confidence: 99%

Diversity of Avenella Drejer (Gramineae) in the Iberian Peninsula inferred from micromorphology, cytogenetic analysis, isozyme assays and in situ hybridization

García-Suárez

Alvarez

Prieto

et al. 1997

Botanical Journal of the Linnean Society

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Micromorphology, cytogenetic analysis, isozyme assays, and in situ hybridization were used in order to analyse the diversity of Avaella in the north-west Iberian Peninsula. Among the taxa analysed, somatic chromosome numbers 2n = 4x = 28 and 2n = 8x = 56 were found.Differences in habit, micromorphology and MDH patterns were also detected. Chromosome C-banding pattern and results obtained from total genomic DNA in situ hybridization indicate that the different taxa analysed are closely related. The systematic position of the different taxa is analysed.

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Association of four isozyme loci with a reciprocal translocation between 1R/4R chromosomes in cultivated rye (Secale cereale L.)

Cited by 20 publications

References 19 publications

Genic heterozygosity and fitness in rye populations with B chromosomes

Genic heterozygosity and fitness in rye populations with B chromosomes

Pollen proteins after two-dimensional gel electrophoresis and pollen morphology of the amphiploids Aegilops kotschyi and Ae. variabilis with Secale cereale

Diversity of Avenella Drejer (Gramineae) in the Iberian Peninsula inferred from micromorphology, cytogenetic analysis, isozyme assays and in situ hybridization

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