Structural colonization of Arbuscular mycorrhizal fungi in three acacia species of different sizes in Riyadh, Saudi Arabia
Paper Details
Structural colonization of Arbuscular mycorrhizal fungi in three acacia species of different sizes in Riyadh, Saudi Arabia
Abstract
In this study, we investigated the status of Arbuscular mycorrhiza fungi (AMF) living natural symbiotically with different sizes of the acacia. Root colonization and infection of different sizes of Acacia tortilis, A. ehrenbergiana and A. gerrardii with AMF varied irrespective of tree species and size. The overall highest infection was recorded in A. ehrenbergiana medium size at Raudhat Khuraim site (70%) followed by A. tortilis short size (60%), A. gerrardii medium size (58.7%) and short size (57.7%) at Washlah site. The lowest infection was found in A. gerrardii large size in Khuraim (6%). The maximum vesicles were found in A. tortilislarge (95%) followed by A. ehrenbergiana medium (91%) at Khuraim, A. tortilis medium (67.3) at Washlah, A. gerrardii and A. tortilis short size (51.7), (50.0) at Khuraim and Huraymila. The minimum was recorded with A. gerrardii medium (4%) in Khuraim. The highest arbuscular infection was recorded with short size A. tortilis (97.7%) followed by medium A. tortilis (51.7), A. tortilis short (50%) in Huraymila. The lowest infection was found in large size A. torilis (4.7%) at Washlah. The intensity of infection and spore population also varied widely and independently in each individual trees size and species. The highest number of spore was observed in medium size A. gerrardii at Washlah (230) and the lowest number (21) in short size A. gerrardii in Khuraim. In conclusion, our results indicate high infection of AMF in the rootsof short acacia sizes followed by medium size and least with large size trees.
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