Characteristics of Forming of Introduced Dwarf Apple Populations in Baikal Area
A. V. RUDIKOVSKY1, E. V. KUZNETSOVA2, O. N. POTEMKIN1
1Siberian Institute of Plant Physiology and Biochemistry SB RAS, 664033, Irkutsk, Lermontova str., 132
2Limnological Institute, SB RAS, 664033, Irkutsk,Ulan-Batorskaya str., 3
Keywords: dwarf apple, dwarf forms, ecological speciation, contact zone
Abstract
It was proved that dwarf apple trees descended from tall-growing forms. This presumption was justified by comparative analysis of morphological features, ITS1 sequence identity and presence of genetic streams between the studied forms. It was also suggested that formation of dwarf forms in the present case is the initial phase of ecological speciation. Wide scatter of Fst values in different loci among the studied groups, ecologically mediated selection against hybrids and parallel formation of dwarf forms of apple trees all attest to this supposition.
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