河北中部药用植物AM真菌生态学研究

2005年8月和10月,对河北省安国市境内种植的9种药用植物AM真菌侵染状况及与土壤因子的相关性进行了调查分析.结果表明,9种药用植物都能与AM真菌形成良好的共生关系,不同药用植物形成菌根的能力不同.形成的菌根包括重楼型(Paris-type)和疆南星型(Arum-type)2种类型.土壤碱解N与丹参和麻山药的孢子密度、北沙参菌丝定殖率和总定殖率呈显著正相关,与紫苑丛枝定殖率呈显著负相关.土壤速效P与丹参丛技定殖率、麻山药泡囊定殖率呈显著正相关,与桔梗孢子密度、白术泡囊定殖率呈显著负相关.土壤有机质与北柴胡孢子密度呈显著负相关.土壤pH与北沙参菌丝定殖率和总定殖率、北柴胡孢子密度呈显著负相关,与北沙参孢子密度呈显著正相关.

Ecological study on AM fungi around roots of medicinal plants in the middle area of Hebei Province

Soil samples under the canopy of nine medicinal plant species from Anguo city of Hebei province were collected and examined.Nine species of medicinal plants were infected with AM fungi,but the infection rates changed with different medicinal plants.Among nine species,44.5% medicinal plants are Arum-type,55.5% are Paris-type.Soil available N was positively correlated with spore density of Salvia miltiorrhiza and Dioscorea opposite,and hyphal and total percent colonization of Adenophora borealis,while negatively correlated with arbuscular colonization of Aster tataricus;Soil available P exhibited a positive correlation with arbuscular colonization of Salvia miltiorrhiza and vesicular colonization of Dioscorea opposite,while a negative correlation with spore density of Platycodon grandiflorus and vesicular colonization of Atractylodes macrocephala;Spore density of Bupleurum chinense had a positive affection with soil organic matter;Soil pH was negatively correlated with hyphal and total colonization of Adenophora borealis and spore density of Bupleurum chinense,while positively correlated with spore density of Adenophora borealis.