Progenies of the certified seed units of Norway spruce Picea abies on the check areas

agentes nocivos agronomic characters arbre arbre brise-vent arbre forestier arbre pour bois de construction biological control biological development breeding breeding aims breeding methods calidad collecte de semences conifere conifers crecimiento croissance crops cultivos developmental stages economic plants economic sectors environmental effects etapas de desarrollo etapas de desarrollo de la planta facteur nuisible fisiologia fonction physiologique forest trees frost damage gimnospermas growth gymnosperme gymnosperms industria industria de semillas industrie industrie des semences industry injurious factors lutte biologique methode methods objetivo de mejoramiento pest control methods physiological functions physiologie physiology picea picea abies pinaceae plant developmental stages plantas plantas protectoras plante plante de culture plante de protection plante pour construction plants plantule production de semences progeny testing protective plants pruebas de descendencia quality resistance to injurious factors resistencia a la temperatura secondary sector secteur secondaire sector secundario seed collection seed industry seed production seed trees seedlings semencier structural crops taxa taxon taxonomia taxonomie taxonomy temperature resistance timber trees trees variedades varieties windbreak trees