几种野生花卉丛枝菌根发育状况的研究

丛枝菌根是自然界中,植物与真菌形成的分布最广泛的一类互惠共生体。作者对山东省的6种重要野生花卉小黄花菜(Hemerocallis minorMill.)、萱草(Hemerocallis fulvaL.)、琥珀千里光(Senecio ambraceusTurcz.)、矮鸢尾(Iris chamaeiris)、甘野菊(Dendranthema lavandulaefolium)、锦鸡儿(Catagana sinicaRehd.)的AM真菌的侵染状况、典型结构的发育状况以及其根际土壤中AM真菌的孢子密度和根际AM真菌的相对多度和频度进行了研究。结果表明,所调查的6种野生花卉都被AM真菌侵染,且可观察到典型结构泡囊,其根际土壤中AM真菌孢子密度也相当丰富。在本次调查中共分离到了5个属的AM真菌,其中无梗囊霉属和球囊霉属真菌是野生花卉根际AM真菌的优势类群。

Study on natural development of arbuscular mycorrhiza in several species of wild flowers

In the symbiotic association of plant and fungi,arbuscular mycorrhiza(AM),which is formed between plants and Glomales fungi,has the widest distribution in the nature.A investigation(of the AM) was carried out among six wild flowers species in Shandong province on mycorrhizal colonization,natural development of typical structure,spore density in rhizospheric soil,relative abundance and frequency of AM fungi.Results showed that all the roots were colonized by AM fungi,typical a vesicles were observed and spore density of AM fungi in rhizospheric soil was very abundant in this survey,five genera AM fungi were identified,Acaulospora and Glomus were likely the dominant proportion in the(rhizospheric) soil of AM fungi of wild flowers.