Détail de l'auteur
Documents disponibles écrits par cet auteur (2)
Ajouter le résultat dans votre panier Faire une suggestion Affiner la recherche Interroger des sources externes
rapport
U. Bergsten ; M. Nygren ; O. Skre ; SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES UMEA SWE DEPARTMENT OF SIL ; UNIVERSITY OF HELSINKI HELSINKI FIN ; NORVEGIAN INSTITUTE FOR FOREST RESEARCH BERGEN NOR | 1992The objective of this joint Nordic project was to increase the knowledge of the factors affecting seed development, growth and maturity of Scots pine and thus be able to give recommendations about how to 1) determine the actual seed status in te[...]
article/chapitre/communication
M. Nygren ; M. Pulkkinen | 1994Scots pine seed mass growth during the second year of development was studied. Seeds were collected weekly and bi-weekly in three different years from single clones of southern (61° 15' N, 25° 00' E) and northern (66° 40' N, 24° 50' E) origin bu[...]
