Structure of Amaranth (Amarantus L.) populations according to isoenzyme alleles
2008
Yudina, R.S. | Ibragimova, S.S.. | Zheleznova, N.B., Russian Academy of Sciences. Siberian Branch, Novosibirsk (Russian Federation). Institute of Cytology and Genetics
Amaranth is recommended for widespread cultivation, including Siberia. We present a pioneering study of isozyme variability in 93 natural and cultivated populations and 4 cultivars. Starch gel electrophoresis was used to estimate isozymes of alcohol dehydrogenase, glutamate dehydrogenase, malate dehydrogenase, isocytrate dehydrogenase, and malic enzyme. It was found that 73 of 93 populations and the four cultivars were monomorphic for all the enzymes tested. Three populations were polymorphic for three loci at once: Adh, Mdh, and Gdh; two populations were polymorphic for two loci: Adh and Mdh; and two populations were polymorphic for Adh and Gdh. Rare polymorphisms were observed in some populations for individual loci: Adh, Mdh, Gdh, Idh, or Me. Our results demonstrate amaranth monomorphism for the loci studied. The data of low isozyme variability and a high level of morphological varibiality coincide with the data of other foreign researchers. Nowadays a lot of examples of monomorphism for biochemical loci are known among different plant and animal species, that can be explained by the relations of the biochemical properties with the most important functions of organism
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