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Variation of heartrot, sapwood infection and polyphenol extractives with provenance of Acacia mangium

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posted on 2023-05-16, 16:09 authored by Kara BarryKara Barry, Irianto, RSB, Tjahjono, B, Tarigan, M, Agustini, L, Hardiyanto, EB, Caroline MohammedCaroline Mohammed
Infection of heartwood by decay fungi (heartrot) is a concern for growers of Acacia mangium for solid-wood products as the incidence can be high in some regions of Indonesia. Variation of heartrot incidence for different provenances of A. mangium was determined using two field trials in Sumatra, Indonesia. In a Riau Province trial of 21 provenances, the effect of provenance was statistically significant for natural heartrot incidence, which ranged from 1.6% to 27.2%. In a smaller trial using artificial inoculation in South Sumatra, heartwood infection incidence ranged from 39.4% to 70.8% across six provenances and both wound type and provenance were statistically significant factors. There was also significant variation in sapwood infection length related to provenance. Wood extractives (yield, total phenols, protein-precipitable tannin and 2,3-trans-3,4′,7,8-tetrahydroxyflavanone) were quantified from a subsample of trees for each trial. However, no significant differences in extractive concentration were detectable according to provenance and evidence for a relationship between heartwood extractives and heartrot incidence was generally poor. While further studies need to be completed to establish the basis for heartrot incidence, results from these trials allow for recommendations on provenance selection to reduce heartrot incidence and provide information for further genetic selection programmes. © 2006 Blackwell Verlag.

History

Publication title

Forest Pathology

Volume

36

Pagination

183-197

ISSN

1437-4781

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Blackwell Verlag GmbH

Place of publication

Germany

Repository Status

  • Restricted

Socio-economic Objectives

Hardwood plantations

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