Effect of some growth regulators on growth, flowering, seed yield and total alkaloids content of Atropa Belladonna

الملخص EN

Atropa belladonna is an important plant for its medi cinal uses.

The medicinal effect is ma inly due to at ro pine .

Hyoscyamine and scopolamine content arc found in lea ves.

root s and ripe berries .

Se veral growth re gul ators treatments on growth .

flow ering, se ed yie ld and total al kaloid s content of belladonna plants were curr ied out.

Results showe d that 40() ppm fAA was the most effecti ve tre atm ent for pr oducing the highest plants .

larg est leaf number/plant.

hea viest veget ative gro wth.

largest ·number of flowers/plant.

highest seed yiel d/ pla nt and th e high est tot al alkaloid s content in lea ves .

stem .

roots and ripe berries.

Cycocel at 4000 ppm was the most effec tive do se for indu cing ea rly flow ering.

producing the highe st number of branches/plan t and th e hea viest roo ts weight/plant.

TaIler plants (47-52 em) were pr oduced when the plants we re sprayed with 200 ppm G A, compa red to other treatment s.