Response to Growth and Yield of Gandarusa (Justicia Gendarussa) on Different Stem Origin and Auxin Concentration

Authors

  • Aulia Rahmawati Universitas Ma’arif Nahdlatul Ulama
  • Muhammad Fahmi Politeknik Siber Cerdika Internasional
  • Nabil Muzaky Universitas Ma’arif Nahdlatul Ulama

DOI:

https://doi.org/10.55324/ijoms.v6i1.1334

Keywords:

Origin of Cuttings, Auxin, Justicia Gendarussa, Growth, Vegetative Propagation

Abstract

This study aimed to evaluate the effects of stem cutting origin, auxin concentration, and their interaction on the growth and yield of gandarusa (Justicia gendarussa) plants. The experiment was conducted in Karang Tanjung Village, Alian District, Kebumen Regency, Central Java, Indonesia, using a factorial randomized complete block design (RCBD) with two factors: cutting origin (middle-stem and basal-stem cuttings) and 1-naphthaleneacetic acid (NAA) concentrations (0, 50, 75, and 100 ppm). The experiment consisted of eight treatment combinations, four replications, and five plants per experimental unit, resulting in 160 plants. The observed parameters included plant height, stem diameter, number of leaves, number of branches, root length, number of roots, fresh weight, dry weight, and cutting survival percentage. Data were analyzed using analysis of variance (ANOVA) at a 5% significance level, followed by Duncan's multiple range test (DMRT) when significant differences were detected. The results indicated that cutting origin significantly affected stem diameter and cutting survival percentage, while auxin concentration significantly influenced stem diameter. A significant interaction between cutting origin and auxin concentration was observed for stem diameter at 35 days after planting (DAP) and fresh weight at 56 DAP. The B2A1 treatment combination (basal-stem cuttings treated with 100 ppm NAA) produced the highest stem diameter (6.011 mm) at 35 DAP and the highest fresh weight (6.150 g) at 56 DAP. These findings suggested that the combination of basal-stem cuttings and 100 ppm NAA was the most favorable treatment for improving stem diameter and fresh biomass production in gandarusa under the experimental conditions.

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Published

2026-10-21

Issue

Vol. 6 No. 1 (2026): Indonesian Journal of Multidisciplinary Science (Issue In Progress)

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Articles

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Copyright (c) 2026 Aulia Rahmawati, Muhammad Fahmi, Nabil Muzaky

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