Effect of medium composition on the growth and secretion of cultured root of Astragalus adsurgens Pall

The growth and secretion of cultured root of Astragalus adsurgens Pall.are affected by the medium composition.One litre of modified B₅medium of stimulating the growth of the cultured root of A.adsurgens contains KNO₃2660.5mg，(NH₄)₂SO₄ 84.1mg，CaCl₂·2H₂O 75.0mg，MgSO₄·7H₂O 125.0mg，FeSO₄·7H₂O 13.9mg，MnSO₄·4H₂O 5.0mg，α-Naphthylacetic acid（NAA）0.6mg.One litre of modified B₅ medium of high-stayer-producing A.adsurgens root culture consists of KNO₃4565.9mg，(NH₄)₂SO₄48.1mg，MnSO₄·4H₂O5.0mg，inositol 150.0mg，nicotinic acid 1.5mg，vitamin B₆ hydrochloride 1.5mg，vitamin B₁ 15.0mg，NAA0.8mg，and sucrose 50.0g.