Inheritance of tristyly in Oxalis tuberosa (Oxalidaceae)
| Autor: | M Hermann, B R Trognitz |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Heterozygote
Breeding Polyploidy symbols.namesake Gene Frequency Botany Genetics Heterostyly Rosales Alleles Crosses Genetic reproductive and urinary physiology Genetics (clinical) Genes Dominant Oxalidaceae Models Genetic biology Homozygote fungi Inheritance (genetic algorithm) food and beverages Epistasis Genetic Oxalis tuberosa biology.organism_classification Phenotype Mendelian inheritance symbols Epistasis |
| Zdroj: | Heredity. 86:564-573 |
| ISSN: | 0018-067X |
| DOI: | 10.1046/j.1365-2540.2001.00870.x |
| Popis: | Frequencies of floral morphs in progenies obtained from a complete set of diallelic crosses among three accessions of tristylous, octoploid oca (Oxalis tuberosa) were used for a Mendelian analysis of floral morph inheritance. The frequencies observed had the best fit to a model of tetrasomic inheritance with two diallelic factors, S, s and M, m, with S being epistatic over M. No explanation could be found for the unexpected formation of a small percentage of short-styled individuals in crosses between the mid-styled and the long-styled parent. For the acceptance of models of disomic and octosomic inheritance several additional assumptions would have to be made and therefore these modes of inheritance are less likely. Dosage-dependent inheritance of floral morph was rejected. Only a small frequency (36%) of the cross progenies flowered, in contrast to the greater propensity for flowering of O. tuberosa accessions held at gene banks. |
| Databáze: | OpenAIRE |
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