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农学学报 ›› 2016, Vol. 6 ›› Issue (7): 77-82.doi: 10.11923/j.issn.2095-4050.cjas16010008

• 农业工程 农业机械 生物技术 食品科学 • 上一篇    下一篇

60Co-γ辐射对光果甘草种子耐盐性影响的研究

高睿,马淼   

  1. 新疆维吾尔自治区石河子市石河子大学生命科学学院种质资源实验室,新疆维吾尔自治区石河子市石河子大学生命科学学院
  • 收稿日期:2016-01-12 修回日期:2016-02-25 接受日期:2016-03-25 出版日期:2016-07-18 发布日期:2016-07-18
  • 通讯作者: 马淼 E-mail:1473211643@qq.com
  • 基金资助:
    国家自然科学基金项目“高盐环境下乌拉甘草叶片气孔泌盐与光合气体交换的利益冲突及权衡策略的研究”(31360047);石河子大学重大科技攻关项目“耐盐甘草种质的筛选与人工创制”(gxjs2012-zdgg06)。

Effect of 60Co-γ Radiation on Salt Resistance of Glycyrrhiza glabra Seed

  • Received:2016-01-12 Revised:2016-02-25 Accepted:2016-03-25 Online:2016-07-18 Published:2016-07-18

摘要: 筛选有助于提升光果甘草种子耐盐性能的最佳辐射剂量,为发展其在盐碱荒漠和盐渍化弃耕地中的人工种植提供重要指导建议。应用辐射诱变技术,研究经不同剂量的60Co-γ射线辐射处理的光果甘草种子在高盐胁迫条件下的萌发特性,比较不同处理下的种子在高浓度Na2SO4胁迫下的萌发率、累积萌发率和萌发指数。结果表明:未经辐射处理的光果甘草种子的萌发率与盐浓度之间呈负相关,随着盐浓度的升高,萌发率显著降低,起始萌发的时间推迟以及达到最大萌发率所需的时间延长。但经100 Gy和300 Gy的60Co-γ辐射处理后的光果甘草种子,不仅在高盐环境中的萌发率极显著高于零辐射组,而且种子萌发时间明显缩短。合适剂量的60Co-γ辐射处理确实能够有效提高光果甘草种子在Na2SO4胁迫环境下的萌发率,在种植时,应针对土壤中的Na2SO4浓度选择相应的60Co-γ辐射剂量进行处理。

关键词: 赞皇, 赞皇, 大枣 需冷量

Abstract: The purpose of the study was to select the optimal irradiation dosage, which was very important to improve the salt resistance of Glycyrrhiza glabra seed, and provided guidance for the development of artificial cultivation of the licorice in saline-alkali desert soil. Radiation induced mutation technology was used to investigate the germination pattern of Glycyrrhiza glabra seeds under severe salt stress after 60Co-γirradiation with different doses. Comparing the seed germination rate, cumulative germination rate and germination index under high concentration of Na2SO4 stress environment were compared with control. The results showed that a negative correlation between salt concentration and the Glycyrrhiza glabra seeds germination rate which without irradiated, with the increased of salt concentration, the germination rate significantly decreased, initial germination time delayed, and extended the time to get maximum germination rate. The seed which is treated by 100 Gy and 300 Gy 60Co-γ irradiation the germination rate was significantly higher than the seed which is no irradiation, and the germination time was significantly shorter under Na2SO4 stress environment. The appropriate doses of 60Co-γirradiation treatment could effectively improve the seeds germination of Glycyrrhiza glabra under severe salt stress conditions. In conclusion, seeds should be treated under certain doses of 60Co-γaccording to the concentration of Na2SO4 in soils before sowing.