Trees

, Volume 23, Issue 3, pp 597–604

Effect of auxins on adventitious rooting from stem cuttings of candidate plus tree Pongamia pinnata (L.), a potential biodiesel plant

  • Vigya Kesari
  • Anitha Krishnamachari
  • Latha Rangan
Original Paper

DOI: 10.1007/s00468-008-0304-x

Cite this article as:
Kesari, V., Krishnamachari, A. & Rangan, L. Trees (2009) 23: 597. doi:10.1007/s00468-008-0304-x

Abstract

Pongamia pinnata, commercially important tree species used to produce biofuels, is known for its multipurpose benefits and its role in agro-forestry. Present study examines the amenability of vegetative propagation and effect of maturation in candidate plus tree P. pinnata through rooting of stem cuttings treated with varying concentrations and combinations of auxins. The performance of the cuttings was evaluated using SAS GLM software and the data were analyzed as a one-way classified data with and without sub sampling for inferring auxin concentration that can be included in programmes aimed at genetic improvement of the tree species. All auxin treatments promoted sprouting and at lower concentrations triggered/enhanced rooting of cuttings. The effectiveness was in the order of IBA > NAA > IAA when applied singly. IBA at 4.92 mM was found to be most effective where rooting percentage and number of roots were significantly higher (P < 0.01) than in control. However higher concentrations of auxins above 7 mM in general inhibited the rooting of cuttings. The interaction among auxins was found to be effective in root induction and differentiation and the most stimulating effects were observed in three-component mixture. The effect of other cutting characteristics such as juvenility and cutting position on rooting is also discussed.

Keywords

BiodieselPongamiaPlus treeStem cuttingsVegetative propagation

Abbreviations

CPT

Candidate plus tree

IAA

Indole-3-acetic acid

IBA

Indole-3-butyric acid

NAA

Naphthalene acetic acid

NG

North Guwahati

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Vigya Kesari
    • 1
  • Anitha Krishnamachari
    • 2
  • Latha Rangan
    • 1
  1. 1.Department of BiotechnologyIndian Institute of Technology GuwahatiGuwahatiIndia
  2. 2.Crop Research Informatics LaboratoryInternational Rice Research InstituteMetro ManilaThe Philippines