重楼属植物根茎有效成分与菌根侵染率、土壤营养成分之间的相关性
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篇名: 重楼属植物根茎有效成分与菌根侵染率、土壤营养成分之间的相关性
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摘要: 目的:探讨重楼属植物根茎中总皂苷、总多糖含量与根系丛枝菌根真菌(AMF)侵染率及根际土壤营养成分的相关性。方法:以三峡库区的16个采样点重楼属植物及其根际土壤为研究对象,测定根系菌根侵染率和侵染强度、根茎中总皂苷和总多糖的含量以及相应生长地根际土壤养分,利用SPSS 18.0软件对数据进行多重比较和相关分析。结果:三峡库区重楼属植物根系能与AMF形成良好的共生关系,侵染率在85.19%~99.80%之间,侵染强度在16.55%~72.27%之间。不同产地、不同品种重楼属植物根茎中总皂苷和总多糖含量差异有统计学意义(P<0.05)。土壤酸碱度适中,除全氮的平均含量为极缺水平外,其余营养成分的平均含量均属中等及以上水平。相关性分析表明,根系菌根侵染率和侵染强度对根茎质量未见显著性影响。根茎总皂苷与有机质、速效氮呈显著负相关,根茎总皂苷、总多糖与速效磷、速效钾量和pH值呈正相关,其他土壤养分与根茎总皂苷、总多糖量间相关性均不显著。结论:重楼对土壤中不同营养成分具有选择性,丰富的土壤速效磷和速效钾供应有利于重楼根茎中总皂苷和总多糖的合成与积累。
ABSTRACT: OBJECTIVE: To investigate the correlation of total saponins and total polysaccharides content in the roots of Paridis rhizoma genus plants with Arbuscular mycorrhizal fungi (AMF) infection rate and rhizosphere soil nutrients. METHODS: Taking 16 pieces of Paridis rhizoma herbs and rhizosphere soil in Three Gorges Reservoir Area as the research object, mycorrhizal infection rate and infection intensity, the contents of total saponins and total polysaccharides in roots and stem, and rhizosphere soil nutrient contents were all determined. SPSS18.0 software was adopted for data multiple comparison and correlation analysis. RESULTS: Paridis rhizoma genus plants roots in Three Gorges Reservoir Area could form a good symbiotic relationship with AMF. Infection rate ranged from 85.19% to 99.80%, and infection intensity ranged from 16.55% to 72.27%. Paridis rhizoma from different origins and varieties had significant difference in the contents of total saponins and total polysaccharides (P<0.05). Soil pH was moderate, the average content of total nitrogen was in insufficient level, the average concentration of the remaining nutrients belonged to middle levels or above. Correlation analysis showed that the mycorrhizal infection rate and infection intensity of Paridis rhizoma were not significantly correlated with its quality. The total saponins were significantly negatively correlated with organic matter and available nitrogen. The total saponins and total polysaccharides were positively correlated with available phosphorus, potassium and pH value, but they were not significantly correlated with the other soil nutrients. CONCLUSIONS: Paridis rhizoma is selective to different soil nutrients. Rich soil available phosphorus and potassium supply are in favor of the synthesis and accumulation of total saponins and total polysaccharides in Paridis rhizoma roots.
期刊: 2016年第27卷第22期
作者: 潘兴娇,张杰,路风中,丁博,周浓
AUTHORS: PAN Xingjiao,ZHANG Jie,LU Fengzhong,DING Bo,ZHOU Nong
关键字: 重楼;总皂苷;总多糖;土壤养分;菌根侵染率;相关性
KEYWORDS: Paridis rhizoma; Total saponins; Total polysaccharides; Soil nutrients; Mycorrhizal infection rate; Correlation
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