Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (4): 88 doi: 10.1007/s41365-016-0086-6

• NUCLEAR CHEMISTRY,RADIOCHEMISTRY,RADIOPHARMACEUTICALS AND NUCLEAR MEDICINE • Previous Articles     Next Articles

Physiological property and yield of the sweet sorghum mutants induced by heavy ion irradiation

Wen-Ting Gu, Wen-Jian Li, Rui-Yuan Liu, Wen-Jie Jin, Tao-Li-Wei Yang, Xi-Cun Dong   

  1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • Contact: Xi-Cun Dong E-mail:dongxicun@impcas.ac.cn
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    and controversial, which necessitates additional research to explore more tolerant varieties and their mechanism of salt tolerance [3, 7]. Therefore, we can screen novel varieties to enhance the amount of quality raw materials that can be produced from the sweet sorghum. It has been reported that sorghum exhibits large genotypic variations for salinity tolerance [8]. The traditional hybridization-based breeding is inefficient due to the lack of genetic resources and the long breeding cycle. However, the use of heavy ion irradiation is an effective method to generate plant mutants. The use of nuclear techniques in plant breeding has been widely implemented for inducing mutations [9, 10]. In comparison with low linear energy transfer (LET) radiation (such as electrons, X-rays, and gamma rays), heavy ion This work was supported by the STS Project (KFJ-EW-STS-086) and the Western Light Co-scholar (29Y406020) Program of the Chinese Academy of Sciences.

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Wen-Ting Gu, Wen-Jian Li, Rui-Yuan Liu, Wen-Jie Jin, Tao-Li-Wei Yang, Xi-Cun Dong. Physiological property and yield of the sweet sorghum mutants induced by heavy ion irradiation.Nuclear Science and Techniques, 2016, 27(4): 88     doi: 10.1007/s41365-016-0086-6
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Abstract:

Soil salinity can limit plant growth and productivity. The cultivation of tolerant varieties is convenient and cost-effective for making good use of the saline soils. The sweet sorghum plant has a high tolerance for saline alkaline soils. The KF1210-3 and KF1210-4 early-maturity mutants of sweet sorghum were obtained via carbon ion irradiation. The study assesses the productivity of three sweet sorghum cultivars (KF1210-3, KF1210-4, and KFJT-CK) which were grown in intermediate (4.6 dS m−1) and high (11.9 dS m−1) soil salinity. The sweet sorghum grown in the soil salinity of 4.6 dS m−1 produced 50.00–57.30 % greater fresh weight than that in the soil salinity of 11.9 dS m−1, while the difference was not as obvious among the dry biomass of the three sweet sorghum cultivars. Moreover, the Brix degree of the sweet sorghum grown in the soil salinity of 11.9 dS m−1 was greater than that grown in the soil salinity of 4.6 dS m−1. The heavy ion irradiation experiment is of great significance in screening plant mutants, improving environmental conditions, and assessing the productivity. This process, in turn, aids in the understanding of the effects of the biochemical and physiological mechanisms of salt stress.

Key words: Heavy ion irradiation, Sweet sorghum, Salinity, K/Na ratio