Genetic diversity and structure analyses on the natural populations of diploids and triploids of tiger lily, Lilium lancifolium Thunb., from Korea, China, and Japan

Springer Science and Business Media LLC - Tập 38 - Trang 467-477 - 2016
Sung-Il Lee1, Xuan Truong Nguyen2, Jong-Hwa Kim3, Nam-Soo Kim1,4
1Department of Molecular Biosciences, Kangwon National University, Chuncheon, Korea
2Oriental Bio-herb Research Institute, Kangwon National University, Chuncheon, Korea
3Department of Horticulture, Kangwon National University, Chuncheon, Korea
4Institute of Biomedical Science, Kangwon National University, Chuncheon, Korea

Tóm tắt

Tiger lily, Lilium lancifolium Thumb. is an endemic species in Korea. Genetic structure and diversity of diploid and triploid tiger lily accessions were analyzed using SSRP and IRAP molecular markers. All genetic indices analyzed showed that the diploids hold higher genetic variations compared to the triploids which were collected from Korea, China, and Japan. All variations found in triploids were also found in diploids to support the autotriploidy of L. lancifolium. It was also revealed that the triploid populations have experienced population regrowth from small population after population bottleneck. The population and phylogenetic analyses showed that analyzed tiger lilies were partitioned into three populations, Pop 1 from West Sea of Korean Peninsula, Pop 2 from South Sea of Korean Peninsula and Pop 3 of triploids in which many accessions of West Sea and South Sea were admixed in each partitioned group. Although the level of population differentiation is not extensive, FST analysis revealed some level of differentiation among the three populations. The analyses of genetic structure and phylogenetic dendrogram revealed admixture in some accessions among populations. All the results obtained in our analyses imply that autotriploid tiger lilies were originated from a small number of accessions of diploid L. lancifolium.

Tài liệu tham khảo

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