Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "Electrostatic dusting: efficient technique of pollination in larch. | Ann Sci For 1997 54 301-310 Elsevier INRA 301 Original article Electrostatic dusting an efficient technique of pollination in larch G Philippe p Baldet Division amelioration génétique et pépinières orestières Cemagref 45290 Nogent-sur-Vernisson France Received 5 December 1995 accepted 29 March 1996 Summary - Electrostatic pollination has been developed for mass production of seeds of hybrid larch Larix X eurolepis Henry . Pollination occurs within a tank carried at the front of a tractor fig 1 . A high voltage is maintained between the pollen dispenser and the tree to be pollinated. Pollen charged with static electricity is blown on the tree by an electrostatic gun fastened at the top of the tank. This technique favors pollen deposition on the flowers five and 15 pollen grains per bract on the average for 0 and 40 kv respectively fig 2 table II . Compared to conventional pollen blowing electrostatic dusting enhanced full seed percentage 32 vs 23 without reduction in seed viability although the amount of pollen used was much smaller. Moreover this technique involves less time than the conventional method. However seed set decreased from the top to the bottom of the crown 39 and 26 full seeds respectively table III . Manual utilization of an electrostatic gun should result in good pollination judging by the excellent seed set obtained in the branches situated near the gun table IV . pollination pollen electrostatic dusting Larix eurolepis I Larix decidua Resume - Le poudrage électrostatique une technique de pollinisation efficace chez le meleze. La pollinisation par poudrage électrostatique a été évaluée dans un verger d hybridation de meleze Larix X eurolepis Henry . Cette technique consiste à instaurer une forte tension entre le pistolet électrostatique et 1 arbre à polliniser et à souffler du pollen charge en électricité statique. La pollini-sation a lieu dans une cuve portée sur tracteur pour s affranchir du vent. Ce precede favorise le depot du pollen sur les .
