根际细菌对番茄幼苗生长的影响  

Effect of Rhizobacteria on Growth in Tomato Seedling

作　　者：刁风伟 黄琰哲 许子荣 王保平 周静 王秀红 DIAO Feng-wei;HUANG Yan-zhe;XU Zi-rong(Shanxi Institute of Organic Dryland Farming,Shanxi Agricultural University/Key Laboratory of Sustainable Dryland Agriculture(Co-construction by Ministry of Agriculture and Rural Affairs and Shanxi Province),Taiyuan,Shanxi 030031)

机构地区：[1]山西农业大学山西有机旱作农业研究院/农业农村部有机旱作农业重点实验室(部省共建),山西太原030031

出　　处：《安徽农业科学》2024年第11期32-35,42,共5页Journal of Anhui Agricultural Sciences

基　　金：山西省青年科学研究项目(202103021223152);山西农业大学博士科研启动项目(2021BQ132);山西省博士毕业生、博士后研究人员来晋工作奖励经费科研项目(SXBYKY2022-084)。

摘　　要：利用阿须贝氏无氮培养基在番茄根际土中筛选到5株细菌菌株,鉴定菌株生物学分类;然后以番茄为供试植物,分别添加5株菌株菌液为处理,研究根际细菌对番茄幼苗生长和根系结构的影响。结果显示,5株菌株均显著降低了番茄幼苗的株高和SPAD值。FN2和FN6菌株显著降低了植物的干重、鲜重和地上部的投影面积。FN6菌株还降低了植物的根总表面积和根总体积。5株菌株都未呈现出正向促进效应。该研究为开发根际细菌存在的潜在风险提供警惕。Five bacterial strains were selected in tomato rhizosphere soil using Ashby’s nitrogen-free agar medium,and their biological classifications were identified,respectively.Tomato was used to study the effects of five rhizobacteria on growth and root architecture.The results showed that all five strains significantly decreased the plant height and SPAD index in tomato seedlings.FN2 and FN6 significantly decreased the dry weight,fresh weight and shoot projected area.FN6 also decreased the total root surface area and total root volume of tomato.In a word,the five rhizobacteria did not emerge a positive effect,and this study provided a vigilance against the potential risks on application of rhizobacteria.

关 键 词：根际细菌 番茄 根系结构 抑制生长 

分 类 号：S641.2[农业科学—蔬菜学]