Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "Water relations of spruce seedlings sprayed with a surfactant. | 347 Ann Sci For 1991 48 347-355 Elsevier INRA Original article Water relations of spruce seedlings sprayed with a surfactant M Borghetti Istituto Miglioramento Genetico delle Plants Forestall Consiglio Nazionale delle Ricerche via s Bonaventura 13-50145 Florence Italy Received 14 August 1990 acceptedl 7 January 1991 Summary This work assesses whether the water relations of Norway spruce Picea abies Karst seedlings are affected by repeated treatments with ABS sodium dodecylbenzensulphonate . Beginning in August 1987 4-yr-old spruce seedlings were sprayed weekly with a 50 g m-3 ABS solution. Two experiments were performed in 1988 and 1989 during which water potential transpiration rates and stomatai conductance were measured on treated and control plants which were either well-watered or exposed to periods of drought of different duration. Net photosynthesis and specific leaf area of needles were also measured. ABS did not alter transpiration or stomatai conductance associated with xylem water potential and had no effect on net photosynthesis and specific leaf area. Picea abies I Pinaceae I Norway spruce I surfactant I pollution I transpiration stomatai conductance water potential Resume Relations hydriques des plantules d epicea commun pulvérisées avec un agent tensio-actif. Ce travail a été conduit afin d evaluer si des traitements avec des solutions d ABS do-decylbenzensulphonate de sodium influencent les relations hydriques des plantules d epicea Picea abies Karst . Pour cela des plantules âgées de 4 ans ont été pulvérisées toutes les semaines à partir d aout 1987 avec une solution d ABS à la concentration de 50 g nr3. Deux experiences ont été réalisées en 1988 et 1989 pendant lesquelles on a mesuré le potentiel hydrique la conductance stomatique et la Vitesse de transpiration des plantules les unes irriguées les autres soumises à des périodes de sécheresse de durées differentes. On a mesuré aussi la photosynthèse nette et la surface foliaire specifique des .
