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The Journal of Heredity 1994:85(4):314-318
© 1994 The American Genetic Association 85:314-318

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Inheritance of Eleven New Variants of Collinsia heterophylla

J. Gorsic

From Elmhurst College, Department of Biology 190 Prospect Avenue, Elmhurst, IL 60126-3296

Abstract

The inheritance patterns of 11 variants of Collinsia heterophylla (2n = 14) are reported Virescent cotyledons (vr), chlorotic (co), yellow leaves (y), and tubular leaves (tl) were established as monogenic recessive traits Leaves with a well-expressed terminal lobe (lo) were produced by homozygotes, whereas only a tendency for such lobing was observed in heterozygotes Two alleles of the Pb locus controlling pubescence were identified' Pbd produced a densely pubescent stem and Pb' produced a puberulent to glabrous stem. A dominant suppressor of pubescence (Sp) produced a glabrous stem. Two floral mutants, mhented as monogenic recessrves, were identified: maroon (um), whose flowers had a maroon-colored basal part of the upper lip, and keelless (kl), whose flowers had an open (not folded) middle lobe of the lower lip. The monogenic basis for two recessive mutants of floral ontogeny was established: (1) gynoecious (gy), producing flowers whose petals were reduced to a sepaloid corolla and whose stamens were modified into stenle pistils, and (2) superflower (sf), producing actmomorphic terminal flowers with supernumerary (six to 16) floral parts.


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