Crossability of Putative Hybrids of <i>Pinus sylvestris</i>and <i>Pinus mugo</i>with Their Parents  

作　　者：Miroslav Klobucnik Martin Galgoci Peter Bolecek Dusan Gömöry Andrej Kormutak Miroslav Klobucnik;Martin Galgoci;Peter Bolecek;Dusan Gömöry;Andrej Kormutak(Institute of Plant Genetics and Biotechnology, Plant Science and Biodiversity Center, Slovak Academy of Sciences, Nitra, Slovak Republic;Institute of Plant Genetics and Biotechnology, Plant Science and Biodiversity Center, Slovak Academy of Sciences, Nitra, Slovak Re-public;Faculty of Natural Sciences, Comenius University, Bratislava, Slovak Republic;Faculty of Natural Sciences, Constantine Philosopher University, Nitra, Slovak Republic;Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovak Republic)

机构地区：[1]Institute of Plant Genetics and Biotechnology, Plant Science and Biodiversity Center, Slovak Academy of Sciences, Nitra, Slovak Republic [1]Institute of Plant Genetics and Biotechnology, Plant Science and Biodiversity Center, Slovak Academy of Sciences, Nitra, Slovak Re-public [2]Faculty of Natural Sciences, Comenius University, Bratislava, Slovak Republic [3]Faculty of Natural Sciences, Constantine Philosopher University, Nitra, Slovak Republic [4]Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovak Republic

出　　处：《American Journal of Plant Sciences》2021年第8期1246-1258,共13页美国植物学期刊（英文）

摘　　要：Artificial hybridization experiment with the <i>Pinus</i> <i>sylvestris</i> and <i>Pinus</i> <i>mugo</i> putative hybrid individuals and their parents revealed a selective nature of their crossability conditioned by the identical chloroplast DNA (cpDNA) haplotypes of the crossed individuals. Efficiency of hybridization between hybrid individual H1 of <i>P</i>. <i>sylvestris</i> haplotype and <i>P</i>. <i>sylvestris</i> paternal tree was relatively high, as evidenced by 78.03% of filled seeds. On the contrary, the crossing of H1 individual with <i>P</i>. <i>mugo</i> was unsuccessful. Likewise, the crossability of the H2 individual of <i>P</i>. <i>mugo</i> haplotype with the paternal tree <i>P</i>. <i>mugo</i> resulted in 31.15% of filled seeds. A relatively high crossability was characteristic also for the H1 and H2 hybrid trees of different cpDNA haplotypes. A conclusion has been drawn postulating weakened reproduction barrier between hybrid swarm individuals and the paternal species <i>P</i>. <i>sylvestris</i> and <i>P</i>. <i>mugo</i>. Differentiation of the putatively hybrid individuals from the parental species is accompanied by the variation in cpDNA inheritance.Artificial hybridization experiment with the <i>Pinus</i> <i>sylvestris</i> and <i>Pinus</i> <i>mugo</i> putative hybrid individuals and their parents revealed a selective nature of their crossability conditioned by the identical chloroplast DNA (cpDNA) haplotypes of the crossed individuals. Efficiency of hybridization between hybrid individual H1 of <i>P</i>. <i>sylvestris</i> haplotype and <i>P</i>. <i>sylvestris</i> paternal tree was relatively high, as evidenced by 78.03% of filled seeds. On the contrary, the crossing of H1 individual with <i>P</i>. <i>mugo</i> was unsuccessful. Likewise, the crossability of the H2 individual of <i>P</i>. <i>mugo</i> haplotype with the paternal tree <i>P</i>. <i>mugo</i> resulted in 31.15% of filled seeds. A relatively high crossability was characteristic also for the H1 and H2 hybrid trees of different cpDNA haplotypes. A conclusion has been drawn postulating weakened reproduction barrier between hybrid swarm individuals and the paternal species <i>P</i>. <i>sylvestris</i> and <i>P</i>. <i>mugo</i>. Differentiation of the putatively hybrid individuals from the parental species is accompanied by the variation in cpDNA inheritance.

关 键 词：Pinus sylvestris P. mugo CROSSABILITY CPDNA 

分 类 号：Q94[生物学—植物学]