Study on effect of number of leaves and seeds in Ginkgo biloba L. on nutrition of shoots, leaves and seeds II. The changes of soluble sugar and starch in shoots, leaves, seeds and flower bud formation

amidon azote azucares bourgeon buds feuille floraison flowering fosforo ginkgo biloba graine hojas leaves nitrogen phosphore phosphorus potasio potassium seeds semilla starch stems sucres sugars tallo tige yema (planta)