Abstract
Abstract The genetic diversity of Larix × lubarskii Sukaczev and its genetic relationships to other larches from the south of Primorsky krai and Far Eastern and Siberian Larix species were for the first time studied according to the analysis of the UBC460 mitochondrial origin fragment length polymorphism and nucleotide sequences of the 5'-flanking region of the atpA gene and nad4(3c–4r) region in mitochondrial DNA. Two length variants of the UBC460 fragment were detected in the L. × lubarskii population (with a predominance of the short one). This taxon is characterized by an average haplotype (0.582) and low nucleotide (0.0003) diversity. The comparative analysis of nucleotide polymorphism of two mtDNA regions in larches from the south of Primorsky krai revealed three mitotypes in L. × lubarskii; only one of them was common with L. olgensis A. Henry (locus classicus). The network of mitotype genealogical relationships indicates a common origin of L. × lubarskii and L. olgensis and their relatively recent divergence, as well as a closer relationship to L. sibirica Ledeb. than to L. gmelinii (Rupr.) Rupr.
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Claims 7
Claim · model-written summary
Two UBC460 length variants were detected, with the short variant predominant.
Verbatim
e0“Two length variants of the UBC460 fragment were detected in the L. × lubarskii population (with a predominance of the short one)”
t0“Larix × lubarskii”
Claim · model-written summary
Haplotype diversity was 0.582.
Verbatim
e0“This taxon is characterized by an average haplotype (0.582) and low nucleotide (0.0003) diversity”
t0“Larix × lubarskii”
Claim · model-written summary
Nucleotide diversity was low at 0.0003.
Verbatim
e0“This taxon is characterized by an average haplotype (0.582) and low nucleotide (0.0003) diversity”
t0“Larix × lubarskii”
Claim · model-written summary
Three mitotypes were found in L. × lubarskii.
Verbatim
e0“revealed three mitotypes in L. × lubarskii”
Claim · model-written summary
Only one mitotype was shared with L. olgensis.
Verbatim
e0“only one of them was common with L. olgensis A. Henry (locus classicus)”
t0“Larix × lubarskii”
Claim · model-written summary
Mitotype genealogy indicated common origin and recent divergence of L. × lubarskii and L. olgensis.
Verbatim
e0“indicates a common origin of L. × lubarskii and L. olgensis and their relatively recent divergence”
Claim · model-written summary
L. × lubarskii was closer to L. sibirica than L. gmelinii.
Verbatim
e0“a closer relationship to L. sibirica Ledeb. than to L. gmelinii (Rupr.) Rupr.”
t0“Larix × lubarskii”