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Báo cáo lâm nghiệp: "Leaf eating insect damage on different poplar clones and sites"

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Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Leaf eating insect damage on different poplar clones and sites. | Ann. For. Sci. 64 2007 99-108 INRA EDP Sciences 2007 DOI 10.1051 forest 2006093 99 Original article Leaf eating insect damage on different poplar clones and sites Romica TOMESCUa Ludovic NEFb a Institutul de Cercetari si Amenajari Silvice Soseaua Stefanesti 128 Bucuresti Romania b Université Catholique de Louvain Unité Eaux-et-Forêts Place Croix-du-Sud 3 Louvain-la-Neuve Belgium Received 28 November 2005 accepted 16 June 2006 Abstract - As much for the geneticist as for the planter information on sites clones and other factors would be decisive to reduce insect damage on poplars. In this perspective a study was done in eight field trials in Belgium and in Luxembourg considering two types of leaf damage on 24 clones from Italy Belgium and the Netherlands. Damage varied considerably depending on the clones sites species and parental individuals. Clone s ranks concord on the different sites site s ranks are similar for the various clones. Clones with same parents have similar levels of resistance. The two types of damage are not correlated. Hybrids of P. deltoides X nigra show widespread variability those with genetic material of P trichocarpa are generally more resistant to caterpillar-like damage. The maximal differences are about 1 to 5 for the clones and 1 to 10 for the sites. But the most vulnerable clone on the most favourable site was damaged almost 70 times more often than the opposite combination. insect poplar clone parenthood site Résumé - Dégâts d insectes populicoles phyllophages sur differents clones et dans divers sites. Tant pour le généticien que pour le planteur des informations sur les clones sites et autres facteurs seraient décisives pour réduire les dommages d insectes sur peupliers. Dans ce but une étude dans huit essais en Belgique et au Luxembourg a porté sur deux types de phyllophages et 24 clones provenant d Italie de Belgique et des Pays-Bas. Les dégâts different beaucoup en fonction des clones lieux espèces et individus parentaux. Le rang

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