... elongation phase. The growth units of the genus Pinus, which are clearly structured with three main zones –a scale leaveszone, a brachyblastes (dwarf branches) zone and a tier of brancheszone ... corresponds to thesection of stem formed during a given growth season [6], comprisesone or more growth units (GU). According to Hallé and Martin [21],a growth unit corresponds to the section of ... desobreiros jovens, II Congresso Florestal Nacional, 1990, Porto,Portugal.[13] Doak C.C., Evolution of foliar types, dwarf shoots, and cone scales of Pinus, Ill. Biol. Monogr. 13 (1935) 1106.[14]...