Abstract
Irradiation breeding is an important technique in the effort to solve food shortages and improve the quality of agricultural products. In this study, a field test was implemented on the M3 generation of two mutant pea plants gained from previous neutron radiation of pea seeds. The relationship between agronomic characteristics and yields of the mutants was investigated. Moreover, differences in physiological and biochemical properties and seed nutrients were analyzed. The results demonstrated that the plant height, effective pods per plant, and yield per plant of mutant Leaf-M1 were 45.0%, 43.2%, and 50.9% higher than those of the control group, respectively. Further analysis attributed the increase in yield per plant to the increased branching number. The yield per plant of mutant Leaf-M2 was 7.8% higher than that of the control group, which could be related to the increased chlorophyll content in the leaves. There was a significant difference between the two mutants in the increase in yield per plant owing to morphological variation between the two mutants. There were significant differences in SOD activity and MDA content between the two mutants and the control, indicating that the physiological regulation of the two mutants also changed. In addition, the iron element content of seeds of the two mutants was about 10.9% lower than in the seeds of the control group, a significant difference. These findings indicate that the mutants Leaf-M1 and Leaf-M2 have breeding value and material value for molecular biological studies.
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This work was supported by the National Natural Science Foundation of China (No. 11675069) and the Fundamental Research Funds for the Central Universities of China (No. lzujbky-2019-kb09).
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Xu, DP., Yao, ZE., Pan, JB. et al. Study on the multiple characteristics of M3 generation of pea mutants obtained by neutron irradiation. NUCL SCI TECH 31, 67 (2020). https://doi.org/10.1007/s41365-020-00777-8
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DOI: https://doi.org/10.1007/s41365-020-00777-8