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논문 기본 정보

자료유형
학술저널
저자정보
Fang Chen (Sichuan University) Guo-ye Guo (Chinese Academy of Sciences) Sheng-hua Wang (Sichuan University) Ying Xu (Sichuan University) Lin Tang (Sichuan University) Mao-qun Yu (Chinese Academy of Sciences)
저널정보
한국유전학회 Genes & Genomics Genes & Genomics Vol.38 No.6
발행연도
2016.1
수록면
557 - 566 (10page)

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초록· 키워드

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The genus Jatropha (Euphorbiaceae) contains species that are of significant economic and ornamental value. However, Jatropha breeding material is rather limited due to incomplete information regarding phylogenetic relationships among germplasm resources. Phylogenetic analyses were performed based on the internal transcribed spacer of nuclear ribosomal DNA (nrDNA ITS), two chloroplast regions (trnL-F and rbcL), and the combined (ITS?trnL-F?rbcL) dataset among twenty-five specimens representing six key Jatropha species. Phylogenetic relationships of Jatropha were well resolved between subgenus Curcas and subgenus Jatropha, and demonstrated the intermediate position of section Polymorphae among sections of both subgenera. Jatropha curcas and J. integerrima demonstrated a close phylogenetic relationship. The molecular data agreed with the morphological classification that recognized J. multifida and J. podagrica in sec. Peltatae. The distinct intraspecific divergence that occurred in J. curcas could be attributed to restricted gene flow caused by geographical isolation and different ecological conditions. Phylograms produced with trnL-F and rbcL sequence data suggested slow rates of sequence divergence among Jatropha spp., while the ITS gene tree had good resolution suggesting high genetic variation of ITS among Jatropha species.

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