Influence of Different Cultivars and Cutting Lengths on Growth of Kalmegh (Andrographis paniculata (Burm. f.) Nees) โสมนันทน์ ลิพันธ์

Abstract

The present study was conducted influence of different cultivars and various cutting length on shoot and root growth cutting in Kalmegh (Andrographis paniculata (Burm. f.) Nees). The experiment was laid out in pot chamber as split plot in randomized complete block design with four replications. Four Kalmegh cultivars (Prachinburi, Pichit 4-4, Rachaburi and Phisanulok 5-4) and shoot cutting of four length classes i.e. 5, 8, 10, 12 cm. were used as main plot and sub plot, respectively. The results disclosed that the highest growth and yield from shoot cutting were recorded in Prachinburi cultivar and followed by Pichit 4-4 and Rachaburi whereas the lowest was Phissanulok 5-4 cultivar. Growth and dry matter of all parameters (such as stem, leaf and root dry weight, flower and pod dry weight, total dry weight, seed and leaf dry weight yield) were greatly influenced by cutting length. The longest cutting length (12 cm.) gave the highest shoot and root growth (200.42 g m^-2 and 9.25 g plant^-1) followed by the shorter cutting length (10 cm. and 8 cm.) whereas the shortest cutting length (5 cm.) gave the lowest short and root growth (74.68 g m^-2 and 2.03 g plant^-1). There were no interaction between cultivars and cutting length in all studied characteristically data (for example plant height, stem and leaf dry weight, branch number, root dry weight and root length, flower and pod dry weight, total dry weight, seed and leaf dry weight yield). However, therefore, it can be recommended that the Prachinburi cultivar with 12 cm. cutting length is the best propagation method for Kalmegh.