| PJS 131 No. 1, June 2002 | |
| Page 17-21 | |
| 0031-7683 |
Rooting of Stem Cuttings in Tectona philippinensis Benth. & Hook. (Verbenaceae)
Mainda P. Follosco-Edmiston*
Biology Department, De La Salle University
2401 Taft Avenue, 1004 Manila, Philippines
corresponding author:This email address is being protected from spambots. You need JavaScript enabled to view it.
ABSTRACT
Stem cuttings of T. philippinensis showed varied responses to rooting in various concentrations of Indolebutyric acid (IBA) and alpha-naphthaleneacetic acid (NAA) under misted condition in polyethylene enclosures. Viability response in stem cuttings at 45 days was manifested either by the formation callus or fissures and formation of adventitious roots with or without laterals. In addition, some cuttings had intact green leaves but did not show any of these responses. The formation of either callus or fissures in some of the cuttings had made them to be as healthy as those that had adventitious roots, however, those cuttings, which survived despite the absence of roots, were not as healthy as those that had adventitious roots, callus or fissures. Highest viability ranging from 95-100% was noted in 7 out of the 11 treatments, and mostly, in treatments where IBA was added. The number of cuttings that did not show any response was high in treatments where NAA was added at 500, 750, and 1000 ppm but was low in treatments where IBA was added at the same concentration. Total rooting % which accounted only those that were formed in cuttings with 1 to 3 main adventitious roots and those with more than 3 main roots and laterals, was highest in treatment with 500 ppm NAA; and lowest, in the control treatment and in treatments with low concentrations of the same rooting regulator. However, when values for both viability and for absence of response in cuttings are considered, stem cuttings treated with 500, 750, and 1000 ppm IBA had higher rooting results. Under similar concentrations of NAA, viability % was low and the number of cuttings with no response was high. Both of these would result to less number of cuttings that would root. The study has shown that T. philippinensis is an easy-to-root species. The production of roots by untreated cuttings indicate the economic potential of producing clones at the farmer level, and the possibility of re-establishing a stable natural population of the species in its natural habitats for ex situ conservation.
INTRODUCTION
Tectona philippinensis Benth. & Hook. (Verbenaceae) locally known as Philippine teak, is an endemic forest tree. it has a restricted area of distribution and grows in a highly vulnerable habitat. To date, just a few trees and wildlings . . . .
REFERENCES
AMINAH H. 1991 . A note on the effect of leaf number on rooting of Hopea odorata stem cuttings. Trop. For. Sci. 3: 384-385.
CHATURVED GP, JHA AN, DAS DK. 1996. Vegetative propagation of Acacia auricullformis by stern cuttings. Forest. Farm and Community Tree Research Reports. 1: 41-44.
DEWS HA. 1998. Vegetative propagation of dipterocarp species by stem cuttings using a very simple technique. In: BIO-REFOR (eds. RE Dela Cruz, MP Fol losco, K. Ishii. K Susuki) Proceedings of the 7" International Workshop of BIO-REFOR. Manila, Philippines. p. 32-34.
DAS SBL. 1998. The role of pre-sprouted cuttings as an improved technique for plantation of teak, gamhar and sisoo. In: BIO-REFOR (eds. RE Dela Cruz, MP Follosco, K Ishii, K Susuki) Proceedings of the T International Workshop of 810-REFOR Manila. Philippines. p. 25-27.
DE GUZMAN ED, UMALI RM, SOTALBO ED. 1986. Guide to Philppine Flora and Fauna. Natural Resources Management Center. Ministry of Natural Resources and University of the Philippines. Diliman, Quezon City. 3: 360.
HARTMANN TA, KESNER DE, DAVIES FT JR, GENEVE RL. 1997. Plant Propagation: Principles and Practices 6th ed. Prentice Hat Inc; New Jersey, USA. p. 329-385.
JACKSON MB. 1988. New Root Formation in Plants and Cuttings. M Minus Nijhoff Publishers, Doldretht, The Netherlands. p. 246-280.
KANTARLI MM. 1993. Vegetative Propagation of Dipterocarps by Cuttings in ASEAN Region; Reiew Paper No. 1 ; ASEAN-Canada Forest Tree Seed Center Project, Saraburi. Thailand. 58p.
LOACH K. 1988. Hormone applications and adventitious root formation in cuttings - a critical review. Acta Hort 227: 10-18.
NANDA KK, ANAND VK, KUMAR P. 1939. Rooting ability of cuttings of forest tree species and its relationship with tissue characteristics, nutrients, and auxins. Second World Consultation on Forest Tree Breeding. Washington, USA. p. 22-28.
OLDFIELD S, LUSTY C, MACKINVEN A. 1998 World List of Threatened Trees. World Conservation Press, Cambridge. U.K.
REUVENI O, RAVIS M. 1981. Importance of leaf retention to rooting of avocado cuttings. J. Amer. Soc. Hon. Sci. 106: 127-130.
RAP JP. 1981. Philippine teak - an endangered tree. Canopy International 7: 16.
SMITS WTM, DE FRAITURE AC, TASMAN I. 1993. Production of dipterocarp planting stock by Cuttings in Indonesia. In: Tropical Tree: Potential for domestication Rebuilding Forest Resources (eds. RRB Leakey. AC Neeton) HMSO. London. p. 10-14.
SRIVASTAVA PBL, MANGGIL P. 1981. Vegetative propagation of some dipterocarceby cuttings. Malay. For. 44: 301-313.
WALTERS KS, GILLETT HJ. (eds.) 1997. IUCN Red List of Threatened Plants. The World Conservation Union, Gland. Switzerland and Cambridge. U.K.
WHITE J, LOVELL PH. 1984. Anatomical changes which occur in cuttings of Agathis australis (D. Don) Lindl. 1. Wounding responses. Ann Bot. 54: 621-632.
