Evaluation on Salt Resistance of Mutants of <i>Paspalum vaginatum</i> Induced by <sup>60</sup>Co-γ Irradiation
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Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (3): 489-495.DOI: 10.3969/j.issn.1000-2561.2020.03.010

• Phytophysiology and Biochemistry • Previous Articles     Next Articles

Evaluation on Salt Resistance of Mutants of Paspalum vaginatum Induced by 60Co-γ Irradiation

ZHAO Xintong,XIE Xinchun,ZHANG Juming,LIU Tianzeng()   

  1. College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, Guangdong 510642, China
  • Received:2019-04-25 Revised:2019-07-19 Online:2020-03-25 Published:2020-04-16
  • Contact: LIU Tianzeng

Abstract:

The progeny of three species of Paspalum vaginatum (Sea Isle 2000, Platinum, Salam) treated with 60Co-γ ray irradiation were used as the materials, and the changes of physiological indexes such as relative water content, relative electrical conductivity, proline content, chlorophyll content and root activity were measured under NaCl stress to evaluate and select varieties with strong salt tolerance. The sensitivity of PL-40-8 to salt stress was lower than that of the parental control Platinum (PL-CK). The relative water content, chlorophyll content and root activity of the mutants were significantly higher than PL-CK (P<0.05). The degree of cell membrane damage was less than PL-CK, and the increase in proline produced by salt damage was significantly lower than PL-CK (P<0.05). Therefore, the mutant material could be further selected and promoted as a salt-resistance grass species.

Key words: Seashore paspalum, mutant, salt resistance

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