木瓜(Carica papaya L.)幼苗階段接種叢枝菌根菌能使根系共生形成菌根,並具有效促進幼苗生長及礦質養分吸收,且能增強對連作田區環境因子之抵抗性。本研究應用3種菌根菌接種技術,建立育苗菌根化作業,試驗另將木瓜苗接種6種叢枝菌根菌調查菌根化幼苗生長情況,菌根化木瓜苗試驗結果顯示,木瓜幼苗接種Archaeospora trappei、Diversispora spurcum及Funneliformis mosseae處理之株高、地徑寬、全株乾重及壯苗指數皆顯著高於對照組;田間管理作業對木瓜苗菌根化試驗結果顯示,接種菌根菌處理之木瓜幼苗移植存活率均高於對照組,其中未整地處理以單獨接種Claroideoglomus etunicatum及F. mosseae處理,幼苗移植存活率顯著高於對照組,分別為70%、55%及23.33%,顯示木瓜接種菌根菌提升環境因子限制之耐受性,此外在苗高生長表現方面則以接種Acaulospora kentinensis、Rhizophagus intraradices處理顯著高於對照組。此外木瓜接種叢枝菌根菌定植於連作田,可提早果實13天採收,並降低始花位置及採果高度。
The inoculation of papaya(Carica papaya L.)seedlings with mycorrhizal fungi can form symbiotic mycorrhizal roots, which can effectively promote the seedlings growth and minerals absorption, as well as enhance the resistance against environmental factors in continuous cropping fields. In this study, three mycorrhizal inoculation techniques were applied to establish a "seedling mycorrhizalization operation". We also inoculated papaya seedlings with six mycorrhizal fungi and evaluated their growth performance. The seedling mycorrhizalization operation results showed that the height, width and diameter, whole plant dry weight and seedling growth index of the seedlings inoculated with Archaeospora trappei, Diversispora spurcum and Funneliformis mosseae were significantly higher than those of the control group. The result of field management toward seedling mycorrhizalization shows that the transplanting survivability of seedlings inoculated with mycorrhizal fungi were all higher than the control group(23.33 %), especially for Claroideoglomus etunicatum and F. mosseae treatment in non-soil preparation field (70 % and 55 %, respectively). It demonstrated that inoculation with mycorrhizal fungi can enhance the tolerant ability of papaya against environmental restriction factors. In addition, the seedling height performance of Acaulospora kentinensis and Rhizophagus intraradices treatment was significantly better than the control group. The papaya fruit can be harvested 13 days earlier. And reduce the flowering and fruit position height.
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