Modified Characterizations of the Gene-controlled Peloric Flower by the Female-cytoplasm in Digitalis purpurea L.

概要

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1. Reciprocal crosses were made between two peloric strains of the common foxglove, Digitalis purpurea L. The one had proved to breed true for this anomalous flower character in pedigree cultures while the other had its origin in the seed in the market. 2. When the former plants were female parents resulting offsprings were exclusively peloric plants, while in the reciprocal crosses the populations covered a wide range of plants from seeming normals through remarkably peloric plants. This variation in the flower form among genotypically peloric plants could be observed repeatedly in subsequent inbred generations as a whole regardless of their parental phenotypic appearances. 3. The dissimilarity in the flower form in reciprocal crosses was found to be consistent for three consecutive generations. 4. The plants homozygous for normal flower, however, irrespective of their maternal strains, were found to behave consistently as normal plants in subsequent successive generations. 5. In conclusion, it can be said that in the foxglove a cytoplasm derived probably from a seed of obscure origin in the market could so interfere with or modify the characterization of gene-controlled peloric flower that there was observed a more or less continuous variation which covers the plants bearing flowers of seeming normality through the plants of apparent peloric flowers.
信州大学理学部の論文
1967-12-15