Short-term studies of (15)NO3(-) and (15)NH4(+) uptake by micropropagated strawberry shoots cultured with or without CO(2) enrichment

absorption de substances nutritives ammonia ammoniac azote carbon dioxide cultivo in vitro culture in vitro dioxyde de carbone enracinement enraizamiento fragaria ananassa in vitro culture micropropagation nitrate nitrates nitratos nitrogen nutrient uptake photosynthese photosynthesis rooting stems tallo tige