1College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh, India
2Directorate of Medicinal and Aromatic Plants Research, Anand, 387310, Gujarat, India
3Kalyani University, Kalyani, 741235, Nadia, West Bengal, India
*Corresponding author: Arunkumar Phurailatpam, e-mail: arunkumarph@gmail.com
Online published on 18 April, 2014.
An investigation was carried out to study the effect of plant age on different morphological characters and the corresponding changes in the bioactive compound (andrographolide) in the three accessions of Andrographis paniculata. The results have shown significant differences and changes in the andrographolide content and yield at various growth stages of the plant. The three accessions with no morphological differences were characterized using RAPD and ISSR profiles and the variation in andrographolide content was estimated by HPLC. A plant age of 80–105 DAT (days after transplantation) may be recommended for harvesting to get a good andrographolide yield though the highest herbage yield may be obtained at 120 DAT.
Andrographis, Andrographolide, Date of harvesting, HPLC, RAPD
