ISSN:
1573-4927
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract The ADH allozyme pattern was tested in seeds of 1553 varieties of the world collection of safflower (Carthamus tinctorius L.) and 36 collections belonging to 14 wild species of the genus Carthamus L. with different chromosome numbers (n=10, 11, 12, 22, and 32). Two genes, Adh 1 and Adh 2, have been identified. The Adh 1 locus controls the allozyme bands found in the faster-moving anodal zone, and the Adh 2 gene controls the cathodal band. A third group of bands which migrates slowly toward the anode and stains weakly is probably interaction products of the two genes. Two codominant alleles Adh 1 S and Adh 1 F , specifying allozymes with different migration rates in the fast-moving anodal zone, were found in cultivated safflower. The frequency of the Adh 1 F allele was very low. A third homologous allele, Adh 1 T , was present only in the polyploid wild species. The Adh 2 was stable, without any variation in migration rate. In addition to the variation in migration rates, there was also variation in activity levels of the products of both the Adh 1 and Adh 2 genes. The contribution of this study to our understanding of the origin of the polyploid species C. lanatus, C. baeticus, and C. turkestanicus is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00485742
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