Inheritance of morphologically conditioned floral coloration in Collinsia heterophylla
Transactions of the Illinois State Academy of Science 96(3): 193-203
ISSN/ISBN: 0019-2252 Accession: 004206469
Violet band formation at the tip of the upper lip in flowers of Collinsia heterophylla, 2N=14, (Scrophulariaceae) is controlled by multiple dominant alleles of the three recessive white flower (w1, w2, w3) loci: Wv, narrow violet band; Wkv carmine-tinged violet band; and Wb, broad violet band extending to the base of the lip. The Wv, Wkv, and Wb alleles are recessive to the wild-type homologues W1, W2, and W3. For the band to be expressed, homozygosity at one band locus is required; the presence of additional violet band alleles in the remaining two loci widens the band.