Bilans nutritifs glucidique et azoteacute; de tissus de tubercules de topinambour cultiveacute;sin vitroapregrave;s irradiation gamma

摘要

Carbohydrate and nitrogen budgets were studied in Jerusalem artichoke tuber explants culturedin vitroafter gamma irradiation (0 to 106ensp;rads (1ensp;radensp;=ensp;10minus;2ensp;J/kg)). A certain level of reducing sugars is reached and retained in all the explants and, in all cases, an increase of protein nitrogen is observed. The highly irradiated tissues have a very disturbed metabolism that involves in particular, amino acid leaching into the culture medium.