GENETIC ANALYSIS OF SOME CONSEQUENCES OF EVOLUTION OF WILD AUTOGAMOUS SPECIES FAGOPYRUM HOMOTROPICUM OHNISHI AND CULTIVATED OUTCROSSER FAGOPYRUM ESCULENTUM MOENCH
2013
Фесенко, И.Н. | Фесенко, A.Н.
Genetic analysis of interspecific differences between outcrosser Fagopyrum esculentum Moench and selfer F. homotropicum Ohnishi was conducted in both flower size and number of partial inflorescences. Both the characters are under polygenic control. Plus-alleles are dominant in loci influencing flower size, but are recessive in loci affecting the number of partial inflorescences: the “wild type” of floral display in buckwheat is large showy flowers combined with a small number of partial inflorescence. Evolution of self-pollinated species F. homotropicum was accompanied by reducing flower size only. On the contrary, variety population of cross-pollinator F. esculentum maintains genetic system providing large flower (primitive feature) and large inflorescence (derived feature). The maintaining of the complex of genes that provide a small number of metamers (partial inflorescences) in the inflorescence in the wild forms was likely to optimize pollen regime when population density was low, and seed forming regime in barren conditions of mountains.
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