Abstract
Summary The effects of nutrients in the planting substrate on the growth and survival of in vitro jackfruit (Artocarpus heterophyllus Lam.) plantlets under ex vitro conditions was investigated. A low level or absence of nutrients in the substrate for at least 20 days resulted in significantly more growth and survival of plantlets. Nutrient feeding after 20 days improved the further growth and survival. Nitrogen, particularly in the ammonium form, was shown to be the most inhibitory nutrient during the early stages of establishment.

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