Air Layering of Acacia crassicarpa Provenances

by

Suliman Jamahari
B. For. Sc.
1995

Supervisor: Assoc. Prof. Dr. Kamis Awang
Co-supervisor: Dr. Nor Aini Abd. Shukor

Rooting of air layering can be an effective means in clonal propagation. The present study examined the possibility of raising planting stock of Acacia crassicarpa provenances from air layering of different positions with and without hormone treatments at the age 2 years. The air layering positions tested were upper crown and lower crown while the hormone used was Seradix no. 3 (containing IBA) in the form of talcum. Of these provenances, two were from Papua New Guinea and 2 from Northern Queensland. The results indicate that all the provenances had high rooting and survival percentages (> 70%) with the highest recorded at 91.6% and 85.4% respectively. For all the provenances, upper crown gave better results in both rooting and survival percentages compared with lower crown. However, hormone treatment did not result in any improvement in rooting percentage and also in survival percentage except in Claudie River provenance from Queensland. Root growth for all provenances followed similar response.

Citation:
Suliman, J. 1995. Air layering of Acacia crassicarpa provenances. B. For. Sc. Thesis. Faculty of Forestry, Universiti Pertanian Malaysia. 50 leaves. (http://www.oocities.org/EnchantedForest/Palace/1170/absuli.html)