Growth, nutrition and response to water stress of Pinus pinaster inoculated with ten dikaryotic strains of Pisolithus sp.
Growth, nutrition and response to water stress of Pinus pinaster inoculated with ten dikaryotic strains of Pisolithus sp.
复制标题
接种 10 种豆子双核菌株的松树生长、营养及对水分胁迫的响应。
DOI：
10.1093/treephys/10.2.153
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发表时间：
1992
期刊：
影响因子：
4
通讯作者：
J. Fortin
中科院分区：
文献类型：
--
作者：
M. Lamhamedi;P. Bernier;J. Fortin
Pisolithus sp.（P.）南非Coker & Couch对海洋松（Pinus pinaster Ait.）的生长参数（枝长、根/冠比和叶面积）、营养和生理指标（蒸腾速率、气孔导度和木质部水势）均有影响。幼苗在干旱和恢复干旱。与某些双核体定殖的幼苗对水分胁迫更敏感，在水分胁迫下比与其他双核体定殖的幼苗表现出更少的菌根形成。对照（未接种）幼苗显着小于那些接种双核体。在水分胁迫和恢复期，不同菌根处理的蒸腾速率、气孔导度和木质部水势均不同。复水后，对照和接种双核34 × 20的幼苗的蒸腾速率、气孔导度和木质部水势的恢复比其他处理弱，并且似乎经历了由于水分胁迫造成的损害。不同双核体定植的海岸松地上部中各种元素的含量存在差异。外生菌根真菌的培育为干旱半干旱地区造林提供了一种新的途径。
Reconstituted dikaryons of Pisolithus sp. (Pers.) Coker & Couch from South Africa influenced growth parameters (shoot length, shoot/root ratio and leaf area), nutrition and physiological indicators (transpiration rate, stomatal conductance and xylem water potential) of maritime pine (Pinus pinaster Ait.) seedlings during drought and recovery from drought. Seedlings colonized with certain dikaryons were more sensitive to water stress and showed less mycorrhiza formation under water stress than seedlings colonized with other dikaryons. Control (uninoculated) seedlings were significantly smaller than those inoculated with dikaryons. Transpiration rate, stomatal conductance and xylem water potential varied among mycorrhizal treatments during the water stress and recovery periods. After rewatering, the controls and seedlings inoculated with dikaryon 34 x 20 had a weaker recovery in transpiration rate, stomatal conductance and xylem water potential than the other treatments and appeared to have experienced damage due to the water stress. Concentrations of various elements differed in the shoots of Pinus pinaster colonized by the various dikaryons. It is suggested that breeding of ectomycorrhizal fungi could constitute a new tool for improving reforestation success in arid and semi-arid zones.