tailieunhanh - Báo cáo lâm nghiệp: "Ectomycorrhizal colonization of Alnus acuminata Kunth in northwestern Argentina in relation to season and soil parameters"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:""Ectomycorrhizal colonization of Alnus acuminata Kunth in northwestern Argentina in relation to season and soil parameters" | Ann. For. Sci. 62 2005 325-332 325 INRA EDP Sciences 2005 DOI forest 2005027 Original article Ectomycorrhizal colonization of Alnus acuminata Kunth in northwestern Argentina in relation to season and soil parameters Alejandra BECERRAa Karin PRiTSCHb Nilda Arrigoc Martha PALMAc Norberto BARTOLONid a Instituto Multidisciplinario de Biología Vegetal CONICET . 495 5000 Córdoba Argentina b Institute of Soil Ecology GSF-National Research Centre for Environment and Health GmbH Neuherberg Ingolstaedter Landstrasse 1 85764 Oberschleissheim Germany c Cátedra de Edafología Facultad de Agronomía UBA Argentina d Cátedra de Métodos Cuantitativos Aplicados Facultad de Agronomía UBA Argentina Received 14 April 2004 accepted 27 September 2004 Abstract - The objective of this study was to determine patterns of ECM colonization of Andean alder at two natural forests in relation to soil parameters at two different seasons autumn and spring . The soil parameters studied were field capacity pH electrical conductivity available P total N and organic matter. Twelve ECM morphotypes were found on A. acuminata roots. The ECM colonization varied among soil types and was affected positively by electrical conductivity. Multiple regression relationships among ECM colonization and edaphic properties variables showed no significant differences at two seasons and among soil types with respect to morphotype diversity values. Positive correlations were found between three morphotypes Cortinarius tucumanensis Gyrodon monticola and Russula alnijorrulensis and soil types and two other morphotypes Naucoria escharoides and Lactarius sp. between two seasons. Results of this study provide evidence that ECM colonization of A. acuminata is affected by some chemical edaphic parameters and indicate that some ECM morphotypes are sensitive to changes in seasonality and soil parameters. Alnus acuminata ectomycorrhizal diversity Andean forest soil type Résumé - Colonisation ectomycorrhizienne d Alnus .