Studies On The Application Effect Of Glomus Mosseae On Asparagus Seedlings

Glomus mosseae (GM) is a fungi strain of arbuscular mycorrhiza fungus in Glomus ofhigh adaptability to environment with extensive application range. Asparagus is a perennialvegetable with nutrition healthcare value. It’s quite important to cultivate vigorous seedlingsin asparagus culture. To determine the application effects of Glomus mosseae on asparagusseedlings, pot experiments using ‘Jersey Knight’ as material were conducted. The influencesof GM inoculation on asparagus seedlings growth and mineral nutrients absorption werestudied. Meanwhile we analyzed the effects of high temperature sterilization to the matrix andGM inoculating time on the growth of asparagus mycorrhizal seedlings. Finally, a highlyeffective cultural method of asparagus GM seedlings was established. The main result is asfollows:1. Inoculating GM to asparagus before sowing seeds, the mycorrhizal colonization ratio ofasparagus root reached highest at the tenth week. GM inoculation greatly increased the totallength of shoots, dry weight, root activity, leaves chlorophyll content and mineral nutrientabsorption of asparagus seedlings. However, the root/shoot ratio decreased. It is indicated thatinoculating GM could enhance the growth of asparagus seedlings especially on theaboveground part.2. In non-sterilization matrix (peat: vermiculite=2:1, V/V), the growth and mineralnutrients absorption of asparagus seedings were greatly enhanced by inoculating GM than thatin high temperature sterilization matrix. So, it’s better to cultivate asparagus GM seedlings innon-sterilization matrix.3. Inoculating GM to asparagus at different time has significant difference on the growthand mineral nutrients absorption of asparagus seedlings. The best mycorrhizal colonizationeffects took place at the treatment of inoculating GM when seeds germinated. Meanwhile thebiomass and mineral nutrients absorption were greatly promoted in this treatment. Nosignificant infection difference was found between inoculating GM at one week and twoweeks after seedling emergence. So, seed germinating stage was thought as the bestinoculating time to cultivate asparagus GM seedlings.