Research progress on plant resources of Torreya Arn.
Torreya Arn.,an exceptional member of the Taxaceae family,has captivated floristic research,classification,biodiversity conservation,and many other fields of scientific interest.This article provided an insightful overview of domestic and overseas advances in germplasm resources,geographic spread,origin and phylogenetic evolution,classification,population structure,genetic diversity,cultivation and reproduction,as well as its phytochemical composition.Despite notable advances in understanding the origins and systematic evolution,biogeographic patterns,and evolutionary links of various species,there is still no consensus on Torreya classification.Geographical distribution,habitat characteristics,and resource status are also areas of limited research.In addition,less attention has been paid to community structure characteristics,genetic diversity,reproduction,and cultivation techniques.Research on biochemical makeup is mainly limited to a few species.This article systematically and comprehensively summarizes the research progress at home and abroad on the germplasm resources and geographical distribution,origin and systematic evolution,classification,population structure and genetic diversity,cultivation and reproduction,and phytochemical components of the genus Torreya.The results showed that:1)There is no consensus on the classification of Torreya plants,and the research on geographical distribution,habitat characteristics,and resource status is relatively scattered;2)The research on the origin and systematic evolution,biogeographic pattern,and evolutionary relationship of most species in the genus has achieved initial results,but many scientific issues need to be further clarified;3)There are only sporadic reports on the research on community structure characteristics,genetic diversity,reproduction and cultivation;4)Research on biochemical components is only found in a few species in the genus.Future research strategies should focus on understanding Torreya's biological and ecological traits,phylogeny,genetic evolution mechanism,geographic distribution pattern,endangered management,system evolution pathways,and genetic distances and relationships between species.Given Torreya's economic,culinary,medicinal,and ornamental values,there is a pressing need to introduce and cultivate this species,and to further explore its germplasm resources.
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