TAILIEUCHUNG - Báo cáo khoa học: "The behavior of oaks in response to natural and induced exposure to the surfactant ABS"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: The behavior of oaks in response to natural and induced exposure to the surfactant ABS. | Ann Sci For 1993 50 Suppl 1 61s-65s Elsevier INRA 61s Original article The behavior of oaks in response to natural and induced exposure to the surfactant ABS s Moricca 1 E Paoletti 2 c Comparini 2 11stituto di Patologia e Zoologia Forestale e Agraria Piazzale delle Cascine 28 50144 Florence 2 Centro di Studio per la Patologia delle Specie Legnose Montane CNR Piazzale delle Cascine28 50144 Florence Italy Summary Quercus pubescens Q frainetto Q ilex and Q robur were sprayed with ABS sodium dodecyl benzenesulfonate a surfactant often found in marine aerosols over 2 growing seasons to test the effect of the surfactant on the leaf wax structure. Though all species were affected they differed in their tolerance to ABS. The effect of ABS was also tested on the pollen quality of Q ilex. Pollen from declining and apparently healthy individuals was germinated in cultures with different concentrations of ABS. A negative effect on pollen germination and pollen tube length was noted. The reduction in pollen viability could affect the genetic resources of holm oak populations in the future. ABSI oak spp I pollen wax structure Resume Reaction des chênes à I exposition naturelie et simulée à I ABS. Des arbres appar-tenant à Quercus pubescens Q frai netto Q ilex et o robur ont été aspergés d ABS dodecylbenzenesulfonate de sodium detergent souvent trouvé dans les aerosols marins pendant 2 saisons de vegetation afin de tester I effet du detergent sur les structures des cires foliaires. Alors que toutes les espèces étaient atteintes des differences specifiques ont été observées. L effet de I ABS sur la qualité du pollen de o ilex a également été étudié. Le pollen issu d arbres dépérissants et apparem-ment sains a été germé dans des cultures ayant des concentrations variables d ABS. L ABS exerce un effet negatif sur la germination du grain de pollen et le développement du tube pollinique. La reduction de la viabilité pollinique peut affecter les ressources génétiques du chêne vert dans

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