[Long time growth comparison of different propagation techniques at Rhododendron (grafting, cutting, in vitro)]

bouture crecimiento croissance cultivo in vitro culture in vitro cuttings esquejes fleur flores flowers grafting greffage growth hybride hybrids in vitro culture injerto multiplication des plantes plant propagation portainjertos porte greffe resistencia invernal rhododendron rootstocks viabilidad viability vitroplant vitroplantas vitroplants winter hardiness