Farmers’ perceptions of climate change and its implication on livestock production in mixed-farming system areas of Bale highlands, Southeast Ethiopia; Challenges and extents of Soil and Water Conservation measures in Guba-Lafto Woreda of North Wollo, Ethiopia; Evaluation of milk production performance of lactating Fogera cows fed with urea and effective micro-organisms treated rice straw as basal diet.

E3 Journal of Agricultural Research and Development

E3 Journal of Agricultural Research and Development Vol. 4 (6) pp. 079-084, October 2014; © E3 Journals; ISSN 2276-9897

Genotype and environment interactions in Moe and Mor of Acacia Mangium

Lokmal Ngah 1 * , Mohd-Noor Abdul-Ghani 1
1 senior Researcher, Forest Research Institute Of Malaysia, (Frim), Kepong, 52109 Kuala Lumpur, Malaysia
2 head, Centre For Plant Science Study, University Sultan Zainal Abidin Terengganu, Besut Campus, 22200 Besut, Trengganu, Malaysia.
*Corresponding Author E-mail: lokmal@frim.gov.my
Accepted 29 September 2014

Abstract

This paper presents the effects genotype by environment interaction (GXE) on the wood strength properties of a 13-year-old Acacia mangium established at five sites in the state of Sarawak, Malaysia. The objective of this paper is to examine GXE interactions on the modulus of elasticity (MOE) and modulus of rupture (MOR) of five provenances planted at the five sites. Effects of provenance and site were found to be significant for both MOE and MOR. GXE interaction was highly significant in both traits which involved changes in ranking, indicating a strong influence on both MOE and MOR. GXE interaction has the highest component of variance relative to site and provenance component of variances i.e. 30.5% and 37.8% for MOE and MOR, respectively

Keywords: Acacia mangium, modulus of elasticity, modulus of rupture, Provenance, variance component.

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