核农学报2026，Vol.40Issue(6)：1096-1104,9.DOI:10.11869/j.issn.1000-8551.2026.06.1096
空间站搭载橡胶草对当代叶片生长和光合响应的影响
Effects of Space Station Flight on Leaf Growth and Photosynthetic Response to Contemporary Taraxacum kok-saghyz
摘要
Abstract
To elucidate the contemporary biological effects of space station flight exposure on Taraxacum kok-saghyz,this study used three varieties of Taraxacum kok-saghyz(Russian K-445,TKS1,and Al)as experimental materials.A six-month space exposure experiment was carried out using the extravehicular biological radiation exposure platform of the Mengtian module of the Chinese Space Station.Post-exposure,seedling emergence rate,leaf morphological traits,and photosynthetic characteristics of these treated samples were analyzed.The results showed that space station flight exposure caused significant varietal differences in seedling emergence.Specifically,space exposure significantly increased the seedling emergence rate of Russian K-445 and TKS1,while no significant effect was detected in the A1 variety.The growth-promoting effect of space exposure on leaf development exhibited stage-dependent variation,being most pronounced during the seedling and budding stages,but not significant during the flowering stage.In contrast to these phenotypic changes,leaf photosynthetic characteristics(chlorophyll content and chlorophyll fluorescence parameters)did not show significant alterations after space exposure,suggesting that space station exerts differential regulatory effects on various physiological processes.This study provides a theoretical basis for understanding the biological effects of the space environment on Taraxacum kok-saghyz,and offers valuable insights for utilizing space mutagenesis in the development of new rubber grass germplasm.关键词
空间站搭载/橡胶草/表型/光合生理Key words
space station flight/Taraxacum kok-saghyz/phenotype/photosynthetic physiology引用本文复制引用
刘泽,周利斌,康睿娇,张萌,赵桂琴,柴继宽,曲颖..空间站搭载橡胶草对当代叶片生长和光合响应的影响[J].核农学报,2026,40(6):1096-1104,9.基金项目
国家重点研发计划(2022YFD1200705),核技术研发科研项目(HJSYF2024(31)),甘肃省技术创新引导计划项目(24CXNA050) （2022YFD1200705）
