Summary
o| li]1.|Three loci,B, I andF, concerned with the distribution of anthoeyanins in diploid cultivated potatoes, are identified. AllelesB d>B c>B b>B a>b, in order of dominance, are distinguished.
B d produces in the seed a band of pigment on the node of the hypocotyl of the embryo and, in the mature plant, a band of pigment at each node, a coloured floral abscission layer and a coloured eyebrow on the tuber.
WithB c, a band of pigment at each node of the mature plant is absent, but other effects are like those ofB d.
B b gives a coloured floral abscission layer and a coloured eyebrow on the tuber. WithB a only the floral abscission layer is coloured.
LocusI in its homozygous recessive phase,ii, inhibits pigment in the tuber.
LocusF in its homozygous recessive phase,ff, gives flecked flowers. li]2.|The three loci are closely linked and probably in the orderB-I-F. li]3.|B c andI, in coupling, give a positional effect so that the characteristic nodal bands ofB d occur. LocusB appears to be a super-gene. li]4.|The suggestion is made that the proximity of these loci is original and functional. It may facilitate intergenic co-operation in the distribution of pigment.
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Dodds, E.S., Long, D.H. The inheritance oe colour in diploid potatoes II. A three-factor linkage group. J Genet 54, 27–41 (1956). https://doi.org/10.1007/BF02981699
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DOI: https://doi.org/10.1007/BF02981699