Effects of Glomus mosseae on Asparagus Seedling Growth and Mineral Nutrients Absorption
SUN Chao1，2，HE Chao-xing1*，YU Xian-chang1，ZHANG Zhi-bin1，LI Yan-su1，YAN Yan1
1Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Beijing 100081，China|2College of Horticulture Science and Engineering，Shandong Agricultural University，Tai’an 271018，Shandong，China
Abstract：Glomus mosseae（GM）is a fungi strain of Arbuscular Mycorrhiza Fungus in genus Glomus of high adaptability to environment with extensive application range．To determine the effects of Glomus mosseae on asparagus（Asparagus officinalis L.）seedling，seedling breeding experiments were conducted in solar greenhouse with inoculation of GM to asparagus seeds during sowing．The influences of two GM strains GM1 and GM2 inoculation on asparagus seedling growth，mineral nutrients absorption and roots mycorrhizal colonization were studied．The results showed that GM inoculation greatly increased the biomass of asparagus seedlings．The mycorrhizal dependency of asparagus roots was high and the mycorrhizal colonization ratio of asparagus root exhibited change tendency of“S”curve．Plants roots inoculated with GM were highly colonized 10 weeks after sowing which significantly increased the root activity and chlorophyll concentration in leaves．GM inoculation promoted the plants to assimilate more mineral nutrients such as P and Mg．So，in asparagus cultivation，GM inoculation is an important technique to cultivate vigorous seedlings，shorten seedling stage，save mineral nutrients and raise nutrient utilization ratio．
