Effects of Mg fertilization on growth,nutrient absorption and total saponins content of Paris polyphilla var.yunnanensis

Experiments were carried out to study the effect of nitrogen level on physiological characteristics in leaves and diosgenin content in bulk root of Dioscorea zingiberensisg.

Anthocyanin essence of the purple pigment and positive correlation of the anthocyanin content and the total ginsenoside content of the root tuber of Panax notoginseng;