تأثير مستخلص و مسحوق جذور السوس في نمو الاصل تروير سترنج (Poncirus trifoliata l.raf × citrus sinensis l. Osbeck)‎ المزروع نسيجيا (in vitro)‎

الملخص EN

The study aimed to investigate the effect of extract and powder of liquorice (licorice) as a source of natural gibberellin (GA3).

The shoot tips of citrus rootstock “troyer citrange” were used as explants.

The results showed that the addition of extract and powder of liquorice, increased shoots' length after two months of culture .

The highest average shoot length (4.22cm) was achieved at 6cm³/L of the extract in comparison with control treatment or standard treatment (2mg/L GA3).

The average shoots' length was 3.56cm when 125mg/L powder was used, which differed significantly from the control treatment but not from the standard treatment.

Liquorice powder was superior with respect to root number and length.

The greatest number of roots (0.60root) was obtained using 125 and 150 mg/L and roots' length (6.60cm) using 150 mg/L.

At this concentration of powder, good rooted plantlets were obtained and surviving plantlets reached 100% after acclimatization