There are many glands that can secrete polysaccharide

forming transparent ball-like liquid drops on the head of glands on Liquorice leaves. All glands on function leaves secrete polysaccharide and accumulate on the head of glands. The ball-like polysaccharide drop on the head of glands have remained on the withered and yellow leaves. Some stimulation effects on the number of glands

the quantity of polysaccharide secretion

internal polysaccharide in leaves and total polysaccharide of leaves are shown after 10 keV

total dosage of 4.68×1016/cm2 N+ was implanted into Liquorice seeds. When 15 keV N+ were implanted

the polysaccharide secretion increased by 44.1% as compared with controls (P<0.01); and it increased by 31.8% (P <0.01) after 20 keV ions were used. The secretion showed evi- dently the positive correlation with the number of glands (r=0.4537

P <0.1). These N+ implantation parameters can provide reference for Liquorice breeding with ions beam.