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农学学报

农学学报 ›› 2024, Vol. 14 ›› Issue (4): 1-6.doi: 10.11923/j.issn.2095-4050.cjas2023-0078

• 农艺科学 生理生化 •    下一篇

谷子水浸液对谷莠子种子萌发及幼苗生长的化感作用

赵娜(), 李国瑜, 李国清(), 丛新军   

  1. 泰安市农业科学院，山东泰安 271000
  • 收稿日期:2023-03-23 修回日期:2023-07-15 出版日期:2024-04-20 发布日期:2024-04-17
  • 通讯作者:
    李国清，男，1985年出生，高级农艺师，硕士，主要从事杂粮作物的栽培与育种工作。通信地址：271000 泰安市泰山区唐王街316号 泰安市农业科学院，Tel：0538-8503377，E-mail：。
  • 作者简介:

    赵娜，女，1990年出生，山东滨州人，农艺师，硕士，研究方向：作物育种与栽培技术研究和示范推广。通信地址：271000 泰安市泰山区唐王街316号 泰安市农业科学院，Tel：0538-8503377，E-mail：。

  • 基金资助:
    泰安市科技创新发展项目（政策引导类）“谷子/绿肥轮作模式对谷子产量及土壤肥力的影响”(2022NS135); 山东杂粮产业技术体系泰安综合试验站(SDAIT-15-09)

Allelopathic Effects of Water Extracts from Millet on Seed Germination and Seedling Growth of Giant Foxtail

ZHAO Na(), LI Guoyu, LI Guoqing(), CONG Xinjun   

  1. Taian Academy of Agricultural Sciences, Tai’an 271000, Shandong, China
  • Received:2023-03-23 Revised:2023-07-15 Online:2024-04-20 Published:2024-04-17

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摘要：

为探究谷子与谷莠子生长之间的化感作用，本试验以‘金选6号’谷子水浸液、‘大狗尾草’为试验材料，研究了不同浓度水浸液对谷莠子种子萌发及幼苗生长的影响。结果表明：不同浓度水浸液对其种子萌发及幼苗生长表现为“低促高抑”。原液处理下种子发芽率较对照降低13.888%，化感效应指数为-0.139。原液、10倍稀释液处理下根芽长及鲜干重等综合效应指数分别为-0.070、-0.034，表现出化感抑制作用，且植株全长、叶面积、叶绿素含量、SOD均低于对照。50、100倍稀释液处理下种子发芽率较对照增加33.333%、11.117%，根芽长及鲜干重等综合效应指数为0.275、0.153，表现为化感促进作用，其中50倍稀释液促进作用最强，植株全长、叶面积、叶绿素含量、SOD均与对照差异显著。谷田中常伴有大量谷莠子生长，此研究结果将为幼苗期去除谷莠子提供一定的理论基础。

关键词: 谷子, 水浸液, 谷莠子, 化感作用, 种子萌发, 幼苗生长

Abstract:

In order to explore the allelopathy between millet and giant foxtail growth, the effects of different concentrations of water extracts on foxtail millet seed germination and seedling growth were studied by using‘Jinxuan 6’and ‘Setaria viridis’ as experimental materials. The results showed that different concentrations of water extracts have‘low promotion and high inhibition’on seed germination and seedling growth. Compared with the control, the emergence rate was decreased by 13.888%, and the allelopathic index was -0.139 under the treatment of original solution. The comprehensive indexes of root length, bud length, fresh weight and dry weight were -0.070 and -0.034 under the treatment of original solution and 10 times diluted solution, which showed allelopathic inhibition, meanwhile the total length, leaf area, chlorophyll content and SOD of plant were lower than those of the control. The emergence rate was increased by 33.333% and 11.117% under the treatment of 50 and 100 times diluted solution, and the comprehensive indexes of root length, bud length, fresh weight and dry weight were 0.275 and 0.153, which showed allelopathic promotion. Among them, the 50 times diluted solution had the strongest promotion, the total length, leaf area, chlorophyll content and SOD of plant were significantly different from the control. The millet field is often accompanied by a large number of giant foxtail, the results will provide a theoretical basis for removing the giant foxtail at the seedling stage.

Key words: millet, water extract, giant foxtail, allelopathic effects, seed germination, seedling growth