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Influence of shading levels on growth, yield and andrographolide content of Kalmegh
Author(s)
Liphan, Somanan
Detpiratmongkol, S.
Date Issued
April 1, 2020
Type
Article
Abstract
We studied the growth, yield and andrographolide content of three local kalmegh (Andrographis paniculata (Burm. F.) Nees) responses to varying shade levels under green house conditions, from March to July 2018 in Thailand. Our experiment was laid out in a split plot design with three replications. Three local kalmegh varieties (Prachinburi, Nakhon Prathom and Saraburi) and four shading levels (0%, 25%, 50% and 75% shading) were applied to the test plots. Stem height, stem, leaf and root dry weight and leaf number per plant, seed and leaf dry weight yield and andrographolide content were recorded. The Prachinburi variety, followed by Nakhon Prathom and Saraburi, showed the strongest growth under all shade conditions. Different shading levels strongly influenced growth and kalmegh yield. The highest growth, stem, leaf, root, total dry weight, seed and leaf dry weight yield and andrographolide content were registered at 25% shading levels followed by 0%, 50% and 75% shading levels. We concluded that 25% shading and the local Prachinburi variety kalmegh should be recommended.
Citation
Plant Archives, 20(1), 1349-1354, 2020