EFFECT OF ORGANIC-INORGANIC N SOURCES ON GROWTH, NPK NUTRIENTS AND SECONDARY METABOLITES OF PANAX NOTOGINSENG (BURK.) F. H. CHEN

Xiaohong Ou; Ye Yang; Lanping Guo; Duanwei Zhu; Dahui Liu

doi:10.9755/ejfa.2016-10-1528

Authors

Xiaohong Ou College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, China
Ye Yang Key Laboratory of Panax Notoginseng Resources Sustainable Development and Utilization of State Administration of Traditional Chinese Medicine, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
Lanping Guo 1 College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, China,
Duanwei Zhu 1 College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, China,
Dahui Liu College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, China

DOI:

https://doi.org/10.9755/ejfa.2016-10-1528

Keywords:

Panax notoginseng, organic and inorganic Nc, growth, nutrients uptake, secondary metabolites

Abstract

The effects of organic and inorganic N combined application on P.notoginseng cultivation are poorly known. For this reason, we have carried out a pot culture experiment in 2010. The treatments respectively were (1) control (no N input, CK), (2) organic N (ON), (3) half organic N and half inorganic N (1/2ON+ 1/2IN), (4) inorganic N (IN). Plant growth, NPK and secondary metabolites concentration were assayed. Results showed that compared to CK, ON increased plant height, N, P concentration and accumulation and total saponins concentration, but reduce total flavonoids concentration. IN increased shoot and root biomass, N concentration and accumulation, K accumulation, but reduce total flavonoids and saponins concentration. 1/2ON+ 1/2IN had the highest hair root length, root diameter, biomass, N concentration and accumulation, K concentration in roots, total saponins concentration, but had the lowest K concentration in shoots, total flavonoids concentration in shoots and roots. Correlation analysis showed total flavonoids concentration was negative correlated with N concentration and accumulation, K concentration in shoots, but was positive correlated K concentration in roots. Total saponins concentration was negative correlated with K concentration in shoots whereas positive in roots, and was negative correlated with total flavonoids concentration. Totally, organic and inorganic N combined application with the ratio of 50/50 is the best way for growth and saponins of P.notoginseng.