Maltose-driven carbohydrate status and early raffinose synthesis enhance maturation efficiency in hybrid fir somatic embryogenesis

Maltose cultivation of hybrid fir (Abies alba x numidica) somatic embryos yields an order-of-magnitude higher production of mature cotyledonary embryos than sucrose.

• Why it matters: Fir somatic embryogenesis needs improved maturation efficiency, and climate pressures plus demand make optimizing carbohydrate feeding critical.
• What they did: The study compared sucrose and maltose maturation variants by measuring endogenous carbohydrate balance during maturation and post-maturation, including raffinose family oligosaccharides after desiccation.
• The result: Maltose showed earlier raffinose accumulation and, after post-maturation desiccation, a higher proportion of raffinose-family oligosaccharides within total carbohydrates, supporting a “mature” biochemical profile linked to maltose advantage.

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