Molecular Evidence for Maternal Origin of Sorbus with Pink Fruits

TANG Wei; YU Xue-dan; ZHANG Chuan-hong; YE Xue-min; FU qi-di; ZHENG Yong-qi

[Objective] To explore the origin of Sorbus individuals with striking pink fruits, morphologically intermediated between Sorbus pohuashanensis and S. discolor in Mount Tuoliang, Hebei province. [Methods] The altitude distribution and growth state of S. pohuashanensis, S. discolor and Sorbus individuals with pink fruits were investigated and the phylogeny relationships of the these Sorbus species were analyzed by chloroplast DNA sequence. [Results] Most S. discolor are distributed at the elevation from 1 300~2 000 m. The majority of S. pohuashanensis distributes at an altitude from 1 500 to 2 200 m. The individuals with pink fruits appear in their sympathy area. 70% haplotype of individuals with pink fruits shared with S. discolor and 10% with S. pohuashanensis, the other is the specific. [Conclusion] The Sorbus individuals with pink fruits originate from interspecific hybridization between S. pohuashanensis and S. discolor, it is also inferred that they have multiple origins and might belong to a new species in natural taxa system. S. pohuashanensis or S. discolor may serve as maternal parent of individuals with striking pink fruits.

1. Research Institute of Forestry, Chinese Academy of Forestry

Received Date: 2016-05-17

Abstract: [Objective] To explore the origin of Sorbus individuals with striking pink fruits, morphologically intermediated between Sorbus pohuashanensis and S. discolor in Mount Tuoliang, Hebei province. [Methods] The altitude distribution and growth state of S. pohuashanensis, S. discolor and Sorbus individuals with pink fruits were investigated and the phylogeny relationships of the these Sorbus species were analyzed by chloroplast DNA sequence. [Results] Most S. discolor are distributed at the elevation from 1 300~2 000 m. The majority of S. pohuashanensis distributes at an altitude from 1 500 to 2 200 m. The individuals with pink fruits appear in their sympathy area. 70% haplotype of individuals with pink fruits shared with S. discolor and 10% with S. pohuashanensis, the other is the specific. [Conclusion] The Sorbus individuals with pink fruits originate from interspecific hybridization between S. pohuashanensis and S. discolor, it is also inferred that they have multiple origins and might belong to a new species in natural taxa system. S. pohuashanensis or S. discolor may serve as maternal parent of individuals with striking pink fruits.

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Reference (22)

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Molecular Evidence for Maternal Origin of Sorbus with Pink Fruits

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