生物技术通报 ›› 2025, Vol. 41 ›› Issue (9): 62-70.doi: 10.13560/j.cnki.biotech.bull.1985.2025-0268

• 技术与方法 • 上一篇    下一篇

果蔗中甘蔗线条花叶病毒脱除技术

胡鑫1,2(), 罗正英3, 刘新龙1,2, 吴才文1,2, 吴转娣1,2()   

  1. 1.云南省农业科学院热带作物生物育种全国重点实验室,昆明 650205
    2.云南省农业科学院甘蔗研究所 云南甘蔗遗传改良重点实验室 农业农村部甘蔗生物学与遗传育种重点实验室(云南),开远 661699
    3.云南农业大学农学与生物技术学院 云南省作物生产与智慧农业 重点实验室,昆明 650201
  • 收稿日期:2025-03-13 出版日期:2025-09-26 发布日期:2025-09-24
  • 通讯作者: 吴转娣,女,硕士,副研究员,研究方向 :甘蔗健康种苗与生物技术;E-mail: wzd@yaas.org.cn
  • 作者简介:胡鑫,男,博士,助理研究员,研究方向 :甘蔗生物育种;E-mail: sugarhuxin@163.com
  • 基金资助:
    国家自然科学基金项目(32460740);云南省农业科学院科研项目(2024KYZ X-03);云南省种子种业联合实验室项目(202205AR070001-09)

Elimination Technology of Sugarcane Streak Mosaic Virus in Chewing Cane

HU Xin1,2(), LUO Zheng-ying3, LIU Xin-long1,2, WU Cai-wen1,2, WU Zhuan-di1,2()   

  1. 1.National Key Laboratory for Biological Breeding of Tropical Crops, Yunnan Academy of Agricultural Sciences, Kunming 650205
    2.Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetic Improvement, Key Laboratory of Sugarcane Biology and Genetic Breeding (Yunnan), Ministry of Agriculture and Rural Affairs, Kaiyuan 661699
    3.College of Agronomy and Biotechnology, Yunnan Agricultural University, The Key Laboratory for Crop Production and Smart Agriculture of Yunnan Province, Kunming 650201
  • Received:2025-03-13 Published:2025-09-26 Online:2025-09-24

摘要:

目的 研究果蔗‘Badila’中甘蔗线条花叶病毒(sugarcane streak mosaic virus, SCSMV)的高效脱毒技术,为提升果蔗产量提供技术支撑。 方法 以携带SCSMV的‘Badila’为试验材料,设置未处理对照、50 ℃ 2 h、50 ℃ 3 h、52 ℃ 3 h、54 ℃ 3 h和58 ℃ 1 h共6个温水处理组,结合茎尖组织培养和芽尖组织培养生产脱毒苗,并对脱毒苗进行SCSMV病原分子检测,同时调查脱毒苗桶栽后的农艺性状,综合分析不同处理对SCSMV的脱除效果。 结果 温水处理显著降低蔗芽出芽率,且温度和处理时间与出芽率呈负相关。当温度升至54 ℃和58 ℃时,蔗芽完全丧失萌发能力,导致无法获取茎尖组织培养材料;然而,该处理对芽分生组织培养的成活率影响较小,即使在54 ℃和58 ℃条件下,芽尖分生组织仍保持较高的成活率(83.3%和76.9%)。在病毒脱除效果方面,50 ℃ 2 h、50 ℃ 3 h、52 ℃ 3 h温水处理结合茎尖分生组织培养仅能降低SCSMV检出率至80%,而相同条件下芽尖培养则分别降至70%、60%和30%。特别是在58 ℃处理1 h条件下,芽尖培养的病毒脱除率可达100%。田间试验表明,脱毒处理的甘蔗植株在长势和农艺性状方面均显著优于对照,其中,株高、中部茎节间长度、单茎重、锤度和蔗糖分分别提高43.5%、53.5%、58.3%、12.4%和30.0%。 结论 成功建立了温水处理结合芽尖组织培养的SCSMV脱除技术体系,该技术具有成活率高、脱毒效率高等优点。

关键词: 果蔗, SCSMV, 热处理, 芽尖组织培养, 脱毒

Abstract:

Objective This study is aimed to investigate efficient virus elimination technology for Sugarcane Streak Mosaic Virus (SCSMV) in chewing cane ‘Badila’, providing technical support for improving sugarcane yield. Method Using SCSMV-infected ‘Badila’ as experimental material, six hot water treatment groups were established: Untreated control, 50 ℃ for 2 h, 50 ℃ for 3 h, 52 ℃ for 3 h, 54 ℃ for 3 h, and 58 ℃ for 1 h. Virus-free plantlets were produced through shoot-tip culture and bud-tip culture. The virus-free plantlets were subjected to molecular detection of SCSMV, and their agronomic traits were investigated after pot cultivation to comprehensively analyze the virus elimination effects. Result Hot water treatment significantly reduced bud germination rates, with temperature and treatment duration showing a negative correlation with germination rate. No sprouting was observed at 54 ℃ and 58 ℃, making it impossible to obtain shoot-tip explants for tissue culture. However, the treatment had minimal impact on the survival rate of bud-tip culture. Even at 54 ℃ and 58 ℃, the bud apical meristems still maintained relatively high survival rates (83.3% and 76.9%, respectively). In terms of virus elimination, hot water treatment at 50 ℃ for 2 h, 50 ℃ for 3 h, and 52 ℃ for 3 h combined with shoot-tip culture only reduced the SCSMV detection rate to 80%. Under the same conditions, bud-tip culture reduced the rates to 70%, 60%, and 30%, respectively. Notably, under 58 ℃ treatment for 1 h, bud-tip culture achieved complete virus elimination (100%). Field trials demonstrated that virus-free sugarcane plants exhibited significantly better growth and agronomic traits compared to the control group. Plant height, internode length, single stem weight, brix and sugar content increased by 43.5%, 53.5%, 58.3%, 12.4% and 30.0%, respectively. Conclusion This study successfully established a virus elimination system combining hot water treatment and bud-tip culture, characterized by high plantlet regeneration and virus elimination efficiency.

Key words: chewing cane, SCSMV, heat treatment, bud-tip culture, virus elimination