湖北农业科学 ›› 2021, Vol. 60 ›› Issue (21): 76-80.doi: 10.14088/j.cnki.issn0439-8114.2021.21.018

• 园艺·特产 • 上一篇    下一篇

小白菜种子休眠破除方法研究

耿启华1,2, 宋莉萍1, 林处发1, 张余洋2, 汪爱华1   

  1. 1.武汉市农业科学院,武汉 430065;
    2.华中农业大学,武汉 430070
  • 收稿日期:2021-01-04 出版日期:2021-11-10 发布日期:2021-11-24
  • 通讯作者: 汪爱华(1979-),女,高级农艺师,博士,主要从事蔬菜遗传育种研究,(电话)15337161092(电子信箱)wangaihualt@163.com。
  • 作者简介:耿启华(1996-),女,安徽阜阳人,在读硕士研究生,研究方向为农艺与种业,(电话)15655011579(电子信箱)gengqh216@163.com。
  • 基金资助:
    武汉市农业科学院创新体系建设“四新”技术服务项目(CXJSFW202001-3); 国家“十三五”重点研发计划项目(2017YFD0101803); 蔬菜产业体系项目(CARS-23-G-26)

Study on the method of seed dormancy breaking in non-heading Chinese cabbage

GENG Qi-hua1,2, SONG Li-ping1, LIN Chu-fa1, ZHANG Yu-yang2, WANG Ai-hua1   

  1. 1. Wuhan Academy of Agricultural Sciences,Wuhan 430065,China;
    2. Huazhong Agricultural University,Wuhan 430070,China
  • Received:2021-01-04 Online:2021-11-10 Published:2021-11-24

摘要: 试验以M62、汉优两种小白菜(Brassica rapa ssp. Chinensis)种子为研究对象,探究不同物理、化学及激素处理方法对打破小白菜种子休眠的效果。结果表明,0.8%、1.6%KNO3浸种可使种子发芽率达到94%以上,且幼苗长势旺盛;GA浓度低于1 000 mg/L时,浸种24 h可几乎完全打破休眠,种子发芽率均达99%;在引发处理中发现,400 mg/L GA和1.0% KNO3可完全打破休眠,发芽率达100%;纯浓硫酸浸种可在不伤及胚的情况下有效破除种皮限制,使M62种子发芽率达到100%,汉优发芽率达到95%以上。

关键词: 小白菜(Brassica rapa ssp. Chinensis), 种子休眠, 发芽率

Abstract: Two kinds of non-heading Chinese cabbage seeds, M62 and Hanyou, were taken as research objects to explore the effects of different physical, chemical and hormone treatments on breaking the dormancy of non-heading Chinese cabbage seeds. The results showed that impregnated with 0.8% and 1.6% KNO3 could increase the germination rate of seeds to over 94%, and the seedlings grew vigorously. When GA concentration was lower than 1 000 mg/L, the dormancy was almost completely broken by soaking the seed for 24 h, and the seed germination rate was up to 99%. In the initiation treatment, it was found that 400 mg/L GA and 1.0% KNO3 could completely break dormancy and the germination rate reached 100%. The seed soaking with concentrated pure sulfuric acid can effectively break the seed coat restriction without harming the embryo, and make the germination rate of M62 seed reach 100% and Hanyou seed reach over 95%.

Key words: non-heading Chinese cabbage, seed dormancy, germination rate

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