ABSTRACT
Inheritance of esterase was studied in nine segregating progenies. It was established that fast migrating components are controlled by two loci, Est-1 (monomeric alpha-esterase) and Est-2 (dimeric beta-esterase). Their polymorphism is determined by three active alleles, a, a', b for Est-1 and a, b, c for Est-2, respectively. Allelic frequencies and heterozygosity of loci in ecological-geographical groups and Central Asian subgroups were estimated. Genetic control of esterase in stone fruits was proposed for the first time.
Subject(s)
Esterases/metabolism , Hybridization, Genetic , Prunus/genetics , Alleles , Asia , Crosses, Genetic , Ecology , Esterases/genetics , Gene Frequency , Geography , Heterozygote , Isoenzymes/genetics , Phenotype , Polymorphism, Genetic , Prunus/enzymologyABSTRACT
Isozyme polymorphism was used for identification of apricot cultivars. 34 cultivars of 38 studied ones had unique genotype profiles for allelic composition of the AAT-1, EST-1, EST-2, SOD-1, LAP-1, PX-2 loci and AMY phenotypes. All regionized and being under State sort testing cultivars of hybridous origin were differentiated. Cultivars of clonal selection were identified regarding cultivars type.
Subject(s)
Isoenzymes/genetics , Prunus/genetics , Alleles , Genetic Variation , Genotype , Phenotype , Polymorphism, Genetic , Prunus/enzymologyABSTRACT
Scheme of apricot AAT control by Aat-1, Aat-2, Aat-3 loci on the base of formal genetic analysis was created. Determination by three active (a, b, c) and null (n) alleles Aat-1 of interspecies polymorphism of fast migrating components was revealed. Alleles frequencies and heterozygosity of Aat-1 locus were determined in ecologic-geographical groups of apricot as well as varieties of hybrid origin.
Subject(s)
Aspartate Aminotransferases/genetics , Polymorphism, Genetic/genetics , Rosales/genetics , Alleles , Aspartate Aminotransferases/analysis , Crosses, Genetic , Electrophoresis, Disc , Gene Frequency/genetics , Genetic Variation/genetics , Heterozygote , Rosales/enzymologyABSTRACT
Studies have been made on the activity of the enzymes of pentose phosphate shunt in the heart, liver and somatic muscles of two lamprey species, Lampetra fluviatilis and L. planeri, at various stages of ontogenesis. It was shown that the activity of these enzymes in larval tissues is significantly higher than in adult lampreys. In adult animals, the enzymes investigated exhibit low tissue specificity.
