CYTOTAXONOMY OF CESPITOSE ZINNIAS |
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| Authors: | Andrew M Torres |
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| Institution: | Department of Botany, University of Wisconsin, Milwaukee, Wisconsin |
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| Abstract: | Torres , Andrew M. (U. Wisconsin, Milwaukee.) Cytotaxonomy of cespitose zinnias. Amer. Jour. Bot. 49(10): 1033–1037. Illus. 1962.—The results of hybridization studies among 5 of the 6 cespitose species of Zinnia are reported. Analyses of meiosis in the F1 hybrids suggest there are 2 genomes, A and B, in the polyploid taxa. The A genome apparently exists in the diploid state in 2 species, but the B genome is known only from polyploid taxa. The chromosome number of Z. oligantha (2n = 20) is reported for the first time. |
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