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The Journal of Heredity 1985:76(5):335-340
© 1985 The American Genetic Association 76:335-340

research-article

Genetics of electrophoretic variants in the annual sunflower

A. L. Kahler, and C. L. Lay

The authors are research geneticist, USDA, Agricultural Research Service (Oilseeds and Cereals Research Unit, South Dakota State University) Northern Grain Insects Research Laboratory, R. R. #3, Brookings, SD 57006, and Associate Professor, Department of Plant Sciences, South Dakota State University, Brookings, SD 57007. Journal series no. 2041. Mention of a trademark name, proprietary product, or vendor does not constitute a guarantee or warranty of the product by the USDA and does not imply its approval to the exclusion of other products or vendors that also may be suitable. The authors wish to thank Joanne Matthees for carrying out the electrophoretic assays and assistance in reading gels. We also thank Dr. A. M. Torres for helpful suggestions concerning enzyme locus nomenclature for sunflowers.

Abstract

Progeny from self-fertilized plants of USDA-ARS germplasm pool II were assayed electrophoretically to determine Inheritance relationships of isozyme polymorphisms in cultivated annual sunflower (Hellanthus annuus L.). Chi-square goodness-of-fit tests verified genetic segregation for six enzyme marker loci including peroxidase 3 (Prx3), malate dehydrogenase 1 (Mdh1), 6-phosphogluconate dehydrogenase 1 (Pgd1), glucose-phosphate Isomerase 2 (Gp12), phosphoglucomutase 4 (Pgm4), and isocitrate dehydrogenase 2 (idh2). Linkage tests showed that Prx3 is linked to Pgm4 with a recombination value of 0.14 ± 0.02. Thus, the results Indicated that the six enzyme loci mark five different linkage groups. Some possible uses of these six enzyme marker loci are discussed.


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