The arbuscular mycorrhizal fungi status of selected tree nurseries in the Ethiopian highlands  

作　　者：Fisseha Asmelash Tamrat Bekele Fassil Kebede Zerihun Belay 

机构地区：[1]Forest and Rangeland Plants Biodiversity Directorate,Ethiopian Biodiversity Institute,Addis Ababa,Ethiopia [2]Department of Plant Biology and Biodiversity Management,Addis Ababa University,Addis Ababa,Ethiopia [3]Center for Soil and Fertilizer Research in Africa,Mohammed VI Polytechnic University,Ben Guerir,Morocco [4]Department of Applied Biology,School of Natural Sciences,Adama Science and Technology University,Adama,Ethiopia

出　　处：《Journal of Forestry Research》2021年第3期1189-1201,共13页林业研究（英文版）

摘　　要：We investigated the arbuscular mycorrhizal fungi(AMF)status of ten nurseries suitable for restoration of dry evergreen Afromontane forests in Ethiopia.We quantified AMF root colonization(RC)and spore abundance(SA)in seedlings of nine native tree species namely Acacia abyssinica Hochst.ex Benth.,Cordia africana Lam.,Dovyalis abyssinica(A.Rich.)Warb.,H agenia abyssinica J.F.Gmel.,Juniperus procera Hochst.ex Endl.,Millettia ferruginea(Hochst.)Baker,Olea europaea L.subsp.c uspidata(Wall.ex G.Don)Cif.,Podocarpus falcatus(Thunb.)R.Br.ex Mirb.and Prunus africana(Hook.f.)Kalkman.We used the ink and vinegar method to stain AMF in roots.RC levels ranged from 8.00 to 99.67%and were generally higher than the RC levels reported from other similar nurseries in Ethiopia.SA levels ranged from 1 to 25 spores g~(-1)and werecomparable with some reports from the field in Ethiopia but they were lower than levels reported by another similar study.RC was more affected by host species than nursery location,while the reverse was true for SA.The results also showed that nursery management could improve AMF status among seedlings.When all nursery tree species were considered,RC and SA levels were unrelated.No strong correlation existed between the nursery management variables considered and RC or SA.However,considering C.africana,J.procera and P.falcatus separately,RC-age(r_(s)=0.829,P=0.042)correlation for O.europaea and RC-pot diameter(r_(s)=0.820,P=0.046),RC-pot volume(r_(s)=0.928,P=0.008)and SA-age(r_(s)=0.943,P=0.005)correlations for C.africana,were significant,strong and positive.Generally,most of the tree species and particularly,early-mid successional tree species had sufficient AMF inoculum.Hence,only the mid-late successional tree species;J.procera,P.falcatus,and P.africana may require AMF inoculation,preferably,during filed planting.Based on our results,age and pot volume were identified to be important variables potentially affecting RC and SA.To better understand the effects of these and other nursery management variables,addi

关 键 词：Arbuscular mycorrhizal fungi Dovyalis abyssinica Dry evergreen afromontane forests Forest restoration Ink and vinegar staining Tree nursery 

分 类 号：S718.4[农业科学—林学]