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期刊信息/Journal information
植物分类学报
植物分类学报

陈之端

双月刊

1674-4918

jse@ibcas.ac.cn

010-62836132，62836572

100093

北京香山南辛村20号中科院植物所内

植物分类学报/Journal Journal of Systematics and EvolutionCSCD北大核心CSTPCDSCI
查看更多>>《植物分类学报》于 1951 年创办。其前身为以下四种刊物：《静生生物调查所汇报》、《国立北平研究院植物学研究所丛刊》、《国立中央研究院植物汇报》、《中国科学社生物研究所植物部论文丛刊》。《植物分类学报》是我国生物学科历史最悠久的核心期刊，代表了我国植物分类学领域的最高学术水平，在国内外有深远的影响。所刊登的内容是生命科学各学科及农业、林业、医药、轻工及环境保护(包括生物多样性和保护生物学研究)和资源开发利用等行业有关学科的基础。《植物分类学报》是从事这些学科工作的必备参考刊物。
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    Exceptionally well-preserved seed cones of a new fossil species of hemlock,Tsuga weichangensis sp.nov.(Pinaceae),from the Lower Miocene of Hebei Province,North China

    Ya LiCarole T.GeeZhen-Zhen TanYan-Bin Zhu...
    164-180页
    查看更多>>摘要：Tsuga(hemlock)is a small genus of 10 extant species in the Pinaceae,with a disjunct distribution in East Asia and eastern and western North America.Reliable species-level identification of Tsuga fossils depends on the discovery of seed cones with intact bracts,but such cones are rare in the fossil record.Here we describe a new fossil species of hemlock as T.weichangensis sp.nov.based on exquisitely preserved seed cones with nearly complete bracts from the Lower Miocene of Weichang,Hebei Province,North China.This fossil species displays a mosaic of characters between Tsuga and Nothotsuga.The well-developed and slightly exserted bract scales of T.weichangensis are reminiscent of Nothotsuga,but other characters,such as nonleaved peduncles and tongue-shaped bract scales,in addition to monosaccate pollen found at the same fossil locality,suggest an affinity closer to Tsuga.Cladistic analysis based on 15 morphological characters and a molecular backbone constraint supports the assignment of these fossil cones to Tsuga rather than Nothotsuga,and places the fossil species of T.weichangensis in an unresolved polytomy within the genus Tsuga.The occurrence of Tsuga seed cone fossils indicate the paleoclimate in the Miocene of Weichang was warmer and more humid than today's climate,which is consistent with the paleoclimate reconstructed by paleopalynology.
      原文链接:
    • 万方数据
    • 维普

    Genetic admixture of Chinese Tajik people inferred from genome-wide array genotyping and mitochondrial genome sequencing

    Jing ZhaoQiao WuXin-Hong BaiEdward Allen...
    181-192页
    查看更多>>摘要：Chinese Tajiks are an Indo-lranian-speaking population in Xinjiang,northwest China.Although the complex demographic history has been characterized,the ancestral sources and genetic admixture of Indo-lranian-speaking groups in this region remain poorly understood.We here provide the genome-wide genotyping data for over 700 000 single-nucleotide polymorphisms(SNPs)and mtDNA multiplex sequencing data in 64 Chinese male Tajik individuals from two dialect groups,Wakhi and Selekur.We applied principal component analysis(PCA),ADMIXTURE,f-statistics,treemix,qpWave/qpAdm,Admixture-induced Linkage Disequilibrium for Evolutionary Relationships(ALDER),and Fst analyses to infer a fine-scale population genetic structure and admixture history.Our results reveal that Chinese Tajiks showed the closest affinity and similar genetic admixture pattern with ancient Xinjiang populations,especially Xinjiang samples in the historical era.Chinese Tajiks also have gene flow from European and Neolithic Iran farmers-related populations.We observed a genetic substructure in the two Tajik dialect groups.The Selekur-speaking group who lived in the county had more gene flow from East Asians than Wakhi-speaking people who inhabited the village.These results document the population movements contributed to the influx of diverse ancestries in the Xinjiang region.
      原文链接:
    • 万方数据
    • 维普