|Table of Contents|

Effects of Planting Density on Agronomic Traits,Carbon and Nitrogen Metabolism and Bioactive Ingredients in Andrographis paniculata

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年23
Page:
106-114
Research Field:
Publishing date:

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Title:
Effects of Planting Density on Agronomic Traits,Carbon and Nitrogen Metabolism and Bioactive Ingredients in Andrographis paniculata
Author(s):
JIAN Shaofen1; 2; CHEN Dongliang1; 2; ZHONG Chu1; 2; HUANG Xuejing3; LI Wanyin4; MIAO Jianhua1; 2
(1.Guangxi Key Laboratory of Medicinal Resource Conservation and Genetic Improvement,Guangxi Botanical Garden of Medicinal Plants,Nanning,Guangxi 530023;2.Guangxi Engineering Research Centre of TCM Intelligent Creation,Guangxi Botanical Garden of Medicinal Plants,Nanning,Guangxi 530023;3.Pharmaceutical College,Guangxi Medical University,Nanning,Guangxi 530021;4.China-ASEAN Traditional Medicine ...
Keywords:
Andrographis paniculata; planting density; carbon and nitrogen metabolism; andrographolide
PACS:
-
DOI:
10.11937/bfyy.20211420
Abstract:
Taking medicinal plant Andrographis paniculata as test material,the effects of planting densities (T1 40 cm×40 cm,T2 40 cm×30 cm,T330 cm×20 cm,T420 cm×20 cm) on agronomic traits,carbon and nitrogen metabolism,and andrographolide accumulation were studied,in order to provide a reference for the rational close planting of Andrographis paniculata.The results showed that with the increase of planting densities,plant height increased,but crown width and chlorophyll a/b decreased.The biomass per plant decreased with the increase of planting densities,and T3 and T4 decreased by 242% and 462%,respectively,compared with T1.In contrast,the yield per unit area of T3 and T4 increased by 102 times and 115 times,respectively,compared with T1,T3 and T4 increased the accumulation of sucrose in stems.With the increase of planting densities,the accumulation of starch in leaves and stems (with the exception of T3)decreased,and the total leaf nitrogen content and the activities of nitrogen metabolic enzymes such as glutamine synthase (GS),glutamate synthase (GOGAT),glutamic-oxaloacetic transaminase (GOT) and glutamic-pyruvic transaminase (GPT) increased.Under the condition of T4,andrographolide contents in leaves and stems decreased by 239% and 389% respectively,in comparison to T1.Andrographolide content in leaves and stems was significantly negatively and positively correlated with total nitrogen content in corresponding organs,respectively.Andrographolide content in leaves was also positively correlated with leaf starch content. The results showed that increasing planting density promoted nitrogen metabolism of Andrographis paniculata plants,and therefore increased consumption of carbonhydrates and reduced andrographolide accumulation.Considering the yield and andrographolide content,the density of 30 cm×20 cm was preferable for Andrographis paniculata planting.

References:

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Last Update: 2022-03-16