Seasonal variation in rooting ability, plant hormones, carbohydrate, nitrogen, starch, and soluble sugar contents in cuttings of white forsythia (Abeliophyllum distichum Nakai)

amidon arbre forestier azote bouturage carbohidratos carbohydrate content carbohydrates contenido de carbohidratos enracinement enraizamiento esquejado forest trees glucide hormonas hormone hormones nitrogen propagation by cuttings rooting seasonal variation starch teneur en glucides