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Genetic structure and diversity of the wild Ussurian pear in East Asia

机译：东亚野生乌苏梨的遗传结构和多样性

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摘要

The Ussurian pear is the most important cultivated pear in the northern part of China. Cultivated Ussurian pears are considered to have derived from Pyrus ussuriensis Maxim. which is native to the northeast of China. In Japan, two varieties of P. ussuriensis , P. ussuriensis var. aromatica and var. hondoensis are native to the northern area and the central area of the main island respectively. In order to reveal the origin of Pyrus ussuriensis var. aromatica distributed in the northern area of main island of Japan, more than 40 explorations have been performed in Japan and in China, and more than 30 natural habitats were recognized. These natural habitats are at risk of extinction because of human development and forest degradation caused by climate change. Population structure and genetic diversity of P. ussuriensis in China and P. ussuriensis var. aromatica in Japan have been investigated using both morphological and molecular markers in order to define appropriate conservation units, and to provide a good focus for conservation management. Distant evolutionary relationships between P. ussuriensis Maxim. in China and P. ussuriensis var. aromatica in Japan inferred from population genetic structure and phylogenetic analysis are also discussed.
机译：乌苏梨是中国北部最重要的栽培梨。栽培的乌苏里梨被认为是源自美国梨。原产于中国东北。在日本，ussuriensis的两个变种，ussuriensis变种。芳香和变种。 Hondoensis分别生于主岛的北部和中部地区。为了揭示Pyrus ussuriensis var的起源。芳香族分布在日本主岛的北部地区，在日本和中国进行了40多次勘探，并确认了30多个自然栖息地。由于气候变化导致人类发展和森林退化，这些自然栖息地面临灭绝的风险。中国和乌苏里乌斯乌斯乌斯乌斯虫的种群结构和遗传多样性。为了确定适当的保护单位，并为保护管理提供了一个很好的重点，已经对日本的芳香族进行了形态学和分子标记研究。乌苏里氏菌之间的远缘进化关系。在中国和乌苏里氏菌变种。还讨论了从日本人群的遗传结构和系统发育分析推断出的芳香族。

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