Physiological Response and Evaluation of Three Phalaris arundinacea Resources to Low-Dose 60Co-γ Radiation-Induced Mutagenesis
HU Er-ai1,2, ZHENG Kai-xin1,2, JI Jia-hui2, XIN Bing2, LIU Ling-yun2, TENG Ke2, FAN Xi-feng2, YUE Yue-sen2, DING Guo-chang1
Affiliations
1 College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province 350002, China; 2 Institute of Grassland, Flowers and Ecology, Beijing Academy of Agriculture and Forestry Sciences Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing 100097, China
To investigate the biological effects of low-dose 60Co-γ radiation on three Phalaris arundinacea resources and differentiate their radiation tolerance, their rhizomes with bud point (parental generation) were irradiated with 10 Gy of 60Co-γ rays. The effects on seed germination and seedling physiological-biochemical characteristics of the first filial generation (M1) were examined. The results demonstrated that radiation significantly suppressed germination rate, germination potential, and germination index of all three resources. Physiological analysis revealed chlorophyll and soluble sugar content in Phalaris arundinacea 3 significantly increased (P<0.05), but peroxidase (POD) activity decreased. For Phalaris arundinacea 2, chlorophyll, malondialdehyde (MDA) content, and POD activity reduced, and soluble protein and superoxide dismutase (SOD) activity elevated. For Phalaris arundinacea 1, soluble sugar and soluble protein content markedly decreased. Correlation analysis showed significant positive relationships between germination parameters and photosynthetic pigments. Principal component analysis yielded consistent findings with correlation results. The low-dose radiation tolerance hierarchy established by subordinate function analysis was Phalaris arundinacea 3>Phalaris arundinacea 1>Phalaris arundinacea 2.
HU Er-ai, ZHENG Kai-xin, JI Jia-hui, XIN Bing, LIU Ling-yun, TENG Ke, FAN Xi-feng, YUE Yue-sen, DING Guo-chang.
Physiological Response and Evaluation of Three Phalaris arundinacea Resources to Low-Dose 60Co-γ Radiation-Induced Mutagenesis[J].
Acta Agrestia Sinica,
2026
, 34
(1)
: 132
-141
.
DOI: 10.11733/j.issn.1007-0435.2026.01.013
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