Abstract
Both “Hose-in-hose” and “Jack-in-the-Green” morphs of Primula vulgaris are controlled by unlinked alleles dominant to wild-type. In hose-in-hose the sepals are converted to a second whorl of petals; in jack-in-the-green they extend upwards as long sheathing leaves which persist as photosynthetic organs during and after capsule development. Breeding experiments indicate tight linkage between hose-in-hose and the Ss heteromorphy supergene, while jack-in-the-green is inherited independently. Both morphs may vary in expression depending on the season and on the background genotype. Hybrids between the two have an intermediate phenotype with a petaloid calyx tipped with leafy lobes.
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Webster, M., Grant, C. The inheritance of calyx morph variants in Primula vulgaris (Huds.). Heredity 64, 121–124 (1990). https://doi.org/10.1038/hdy.1990.15
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DOI: https://doi.org/10.1038/hdy.1990.15
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