芦竹光合特性与染色体组型分析

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关键词：芦竹（ArundodonaxL.）；光合特性；染色体组型； C4 植物

中图分类号：TS272；Q134;S763.3 文献标识码：A

文章编号：0439-8114（2026）01-0181-05

DOI：10.14088/j.cnki.issn0439-8114.2026.01.029 开放科学（资源服务）标识码（OSID）：

Analysisofphotosyntheticcharacteristicsandkaryotype in Arundodonax

ZHONG Nan，CHEN Yu-chao，GUO Sheng-hu，LIU Xuan，TIAN Li，GAN Xiao-yan

AgriculturaliotechnologyResearchCenter，ingxiaAcademyofAgricultureandForestySienes，Yinchuan50

Abstract：ToclarifythephotosyntheticcharacteristicsandchromosomalfeaturesofArundodonax，asystematicidentificationofthe photosyntheticpaterandkaryotyeofdiferentArundodonaxgermplasmmaterialswasconducted.Thephotosynthetictypewscomprehensively determined through leaf anatomical structure observation （scanning electron microscopy）， C4 photosynthetic enzyme activity assay，and carbon isotope ratio （ 813C ）analysis，and the chromosome number and structural characteristics were cytogenetically identifiedusingfuorescenceisituhyridization（FSH）.TheresultsshowedthatArunddonaxpossessdaKranzanatoyebit ing typical structural characteristics of a C4 plant.Both Lyuzhou 1 and Ninglu 1 showed clear 5S rDNA hybridization signalson four chromosomes，indicatingahighconservationinthenumberofrDNAlocibetwenthetwomaterials.ItwasspeculatedthatbothLyuzhou1 and Ninglu 1 might be tetraploids or aneuploids close to nonaploids.

Keywords：Arundo donax；photosynthetic characteristics；karyotype； C4 plant

光合作用是绿色植物、藻类和光合细菌利用太阳光能将二氧化碳和水转化为有机物并释放氧气的过程，是地球生命活动的能量源泉，在维持生态系统平衡和生物圈物质循环中发挥着不可替代的作用。（剩余7496字）