Journal of Nuclear Agricultural Sciences ›› 2020, Vol. 34 ›› Issue (4): 681-690.DOI: 10.11869/j.issn.100-8551.2020.04.0681

• InducedMutationsforPlantBreeding·AgriculturalBiotechnology •     Next Articles

Radiation Effects of 60Co-γ Ray on the Cutting Seedlings of Nine Garden Rose

QI Wenquan1, JIANG Zhenwei1, WANG Yaqin1, YANG Biao1, LIU Bin1, HE Yanhong1,*, GAO Hongsheng2,*   

  1. 1 College of Horticulture and Forestry Sciences, Huazhong Agricultural University/Key Laboratory of Horticultural Plant Biology, Ministry of Education/Key Laboratory of Urban Agriculture in Central China, Ministry of Agriculture, Wuhan, Hubei 430070;
    2 College of Horticulture and Plant Protection,Yangzhou University,Yangzhou, Jiangsu 225009
  • Received:2018-10-19 Online:2020-04-10 Published:2020-02-12

60Co-γ射线对9种庭院月季扦插苗的辐射效应研究

齐文全1, 江振威1, 王亚琴1, 杨彪1, 刘斌1, 何燕红1,*, 高红胜2,*   

  1. 1 华中农业大学园艺林学学院/园艺植物生物学教育部重点实验室/农业部华中都市农业重点实验室,湖北 武汉 430070;
    2 扬州大学园艺与植物保护学院,江苏 扬州 225009
  • 通讯作者: *何燕红,女,副教授,主要从事园林植物遗传育种研究。E-mail:hyh2010@mail.hzau.edu.cn;高红胜,男,讲师,主要从事园林植物遗传育种研究。E-mail:454654541@qq.com。同为通讯作者。
  • 作者简介:齐文全,男,主要从事园林植物遗传育种研究。E-mail:892414756@qq.com
  • 基金资助:
    国家自然科学基金资助项目(31672181),国家级大学生创新创业训练计划(201710504040)

Abstract: To investigate the radiation-induced effects of 60Co-γ ray on cutting seedlings of different rose cultivars, nine garden rose cutting seedlings, Fen Shan, Golden Scepter, Rouge Meilland, Roger Lambelin, Angela, Léonardo da Vinci, Eyes for You, Champagne and Everest Double Fragrance were irradiated at different doses (0, 25, 45, 60 and 80 Gy) by 60Co-γ ray. And the mortality rate, bud germination rate, mutation rate and the main morphological characteristics were investigated. The results showed that with radiation dose increase, mortality rate of cutting seedlings increased gradually from 33.61%(0 Gy) to 79.71%(80 Gy); the growthof rose cutting seedings was inhibited significantly, additionally, the mutation rate increased first and decreased afterwards, reached the maximum at the radiation dose of 45 Gy, which accounts for 64.70% of the total mutation(4.20‰). Furthermore, the susceptibility of different cultivars to 60Co-γ ray irradiation was variousand the semi-lethal radiation dose(LD50)was also different, the effective value was distributed between 26 and 55 Gy among different rose cultivars. Taken the mortality rate, growth condition and variation rate that affected by 60Co-γ ray irradiation together, the best dose of 60Co-γ ray irradiation for garden rose cutting seedlings was 45 Gy. The results will provide theoretical bases for the radiation breeding of rose.

Key words: Rosa hybrida, 60Co-γ, rays, radiation, semi lethal dose, variation

摘要: 为探讨60Co-γ射线对不同庭院月季品种扦插苗的辐射诱变效应,以粉扇、金凤凰、梅朗口红、紫袍玉带、安吉拉、粉色达芬奇、你的眼睛、香槟和九重香9个庭院月季品种的扦插苗为研究对象,60Co-γ射线为辐照源,设置不同剂量(0、25、45、60、80 Gy)进行辐射处理,测定了死亡率、萌芽率、变异率和主要的形态指标。结果表明,随着辐射剂量增加,月季扦插苗平均死亡率逐渐增加,从33.61%(0 Gy)上升至79.71%(80 Gy);植株生长受到显著抑制,植株变异率呈先升高后降低的趋势,辐射剂量为45 Gy时,植株变异率达到最高,占总体变异率(4.20‰)的64.70%。此外,不同品种月季对60Co-γ射线辐射的敏感性不同,半致死辐射剂量也存在差异,其有效值介于26~55 Gy之间。综合60Co-γ射线对月季扦插苗死亡率、生长势和变异率的影响,推荐庭院月季扦插苗的最适辐射剂量为45 Gy,这为月季辐射育种提供了理论基础。

关键词: 月季, 60Co-γ, 射线, 辐射, 半致死剂量, 变异