Inheritance of floral and isozyme polymorphisms in Turnera ulmifolia L.

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Abstract
The Inheritance of four floral polymorphisms and 10 isozyme loci are Investigated in diplold plants (2n = 10) of the distylous perennial weed, Tumera ulmifolia L. (Turneraceae). The four floral polymorphisms are each governed by a single gene locus that exhibits dominance. Three of the four floral polymorphisms are linked, Including style form, petal spot, and anther line. Starch gel electrophoresis was undertaken and nine enzymes were assayed. A total of 10 Isozyme locl segregating in three selfed families was Investigated. All showed codominant expression of alleies. Linkage relationships among floral and Isozyme locl were determined and three linkage groups were Identified. Linkage group I consisted of petal spot, style form, anther line, Pgm-c, Aco-1, and Pgd-c locl. Linkage group II contained Gpl-c, Lap-1, and Sdh-1. A third linkage group consisted of Gdh-1 and Lap-2. The study is the first examination of Isozyme variation in the dicotyle donous family Turneraceae.

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