Abstract

AbstractSweet potatoes (Ipomea batatas L (Lam) cv LO 323) were treated with naphthaleneacetic acid, and during storage at 25°C per cent sprouting and per cent weight loss were measured. Naphthaleneacetic acid was applied either under reduced pressure as a 1 g litre−1 solution containing wetting agent or as a dust of 1, 10 or 100 mg per gram of talc. Application of naphthaleneacetic acid by either method reduced sprouting by more than 50% during a storage period of at least 40 days, with the exception of the 1 mg naphthaleneacetic acid per gram of talc which reduced sprouting by 29%. Treatments that significantly reduced sprouting increased water loss. A mechanism for the control of sprouting is proposed.

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