ORIGINAL ARTICLE

Responses of Auxin Derivatives on Rooting and Sprouting Behavior of Excoecaria agallocha L. Stem Cuttings

In our study, the auxin effect on rooting and sprouting behavior of stem cuttings of Excoecaria agallocha L. has been studied. Initially stem cuttings were pretreated to remove the phenol content of cutting and then the stem cuttings that were devoid from phenols were subjected to hormonal treatment with auxins including indole-3-butyric acid (IBA) 2000ppm, indole-3-pyruvic acid (IPA) 2000ppm, naphthalene acetic acid (NAA) 2000 ppm and IBA+NAA combination 2000 ppm. The root length, root number, rooting and sprouting percentage, number of leaves per cutting, leaf area and photosynthetic pigments were analyzed on 40, 50 and 60 days after planting. Besides this, peroxidase isoenzyme pattern of root and leaf was also analyzed. All the growth attributes have shown an increasing trend at all stages of growth with auxin treatments. Among the auxin treatments, IBA 2000ppm vastly enhances rooting and sprouting behaviour of blinding eye mangrove. The isoenzyme analysis for peroxidase clearly showed that peroxidase (POX) highly supported root initiation and root elongation processes in Excoecaria agallocha.