Control of hyperhydricity in micropropagated apricot cultivars


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Abstract

SummaryThe effects of different factors on the control and reversion of hyperhydricity during the in vitro propagation of Prunus armeniaca were studied. Treatments that decreased the hyperhydricity but did not affect micropropagation rates were the use of the bottom cooling system for 1 or 2 wk and agargel as gelling agent in ‘Helena', whereas the best results were obtained with the bottom cooling system for 2 wk and the use of 0.8% agar as gelling agent in ‘Lorna'. Hyperhydric shoots reverted to normal after keeping them for 3 wk in the bottom cooling system.

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