中国蔬菜Issue(11)：61-71,11.DOI:10.19928/j.cnki.1000-6346.2025.3022
土壤细菌对胡萝卜的促生效应分析
Analysis of the Growth-promoting Effects of Soil Bacteria on Carrots
摘要
Abstract
The growth-promoting effects of strains SZJ-10 and SZJ-11 were evaluated by germination box and pot experiments with carrot varieties'Zhongyu 1877'and'Zhongyu 1749',and the growth-promoting functions of the two strains were preliminarily analyzed.The results of germination box test showed that strains SZJ-10 and SZJ-11 could significantly improve the germination index of two carrot varieties.In contrast to the control,the germination rate increased by 9.00 pp to 26.00 pp,the germination potential increased by 9.25 pp to 24.25 pp,the germination index increased by 21.08%to 51.45%,and the vigor index increased by 20.77%to 96.11%.The results of pot experiment showed that the germination rate increased by 9.75 pp to 22.25 pp,the germination potential increased by 8.00 pp to 19.50 pp,the germination index increased by 13.27%to 34.82%,and the vigor index increased by 43.32%to 95.12%.At the seedling stage,the root length of'Zhongyu 1877'increased by 78.88%after inoculation with SZJ-10,and the root length of'Zhongyu 1749'increased by 43.96%after inoculation with SZJ-11.In the peak period of leaf growth,the root-shoot ratio,root activity and leaf length of'Zhongyu 1877'inoculated with SZJ-10 increased by 48.48%,92.82%and 50.53%,respectively.The root-shoot ratio,root activity and leaf length of'Zhongyu 1749'inoculated with SZJ-11 increased by 31.43%,49.98%and 33.33%,respectively.In the early stage of fleshy root expansion,the root length,root-shoot ratio and net photosynthetic rate of'Zhongyu 1877'inoculated with SZJ-10 increased by 30.93%,23.48%and 63.40%,respectively.The root length,root-shoot ratio and net photosynthetic rate of'Zhongyu 1749'inoculated with SZJ-11 increased by 22.55%,17.12%and 33.10%,respectively.Functional analysis revealed that the two strains had the ability to secrete indole-3-acetic acid(IAA)and gibberellin(GA),and had the activities of iron,nitrogen fixation,phosphorus solubilization,potassium solubilization and ACC deaminase.It can be seen that strains SZJ-10 and SZJ-11 have good growth-promoting effects on carrots and are expected to be popularized and applied in the process of carrot planting.关键词
胡萝卜/土壤细菌/促生/种子萌发/植株生长Key words
carrot/soil bacteria/growth-promoting/seed germination/plant growth引用本文复制引用
田周娥,程旭,喻彬恒,周智龙,胡新喜,林原..土壤细菌对胡萝卜的促生效应分析[J].中国蔬菜,2025,(11):61-71,11.基金项目
湖南农业大学引进人才科研启动项目(540742000699) （540742000699）
