Teak Clone Trial in Wonogiri: Variable Height and Diameter Growth, Moderate Heritability

Image: article cover, from Hamdan and Mahfudz (2016), Jurnal Wasian, licensed CC BY-NC 4.0.

A research team from the Centre for Forest Biotechnology and Tree Improvement Research and Development evaluated the growth of teak clones (Tectona grandis L.f.) in Wonogiri, Central Java. Published in Jurnal Wasian in 2016, the study aimed to assess the performance of teak clones suitable for development in industrial and community forests. Two clone trial plots were established, one in 2002 with 20 clones and another in 2005 with 100 clones.

At five years of age, mean tree height across the two plots ranged from 8.73 to 9.97 metres, stem diameter from 8.61 to 13.14 centimetres, and estimated tree volume from 0.046 to 0.103 cubic metres. The team also estimated clonal heritability for height and diameter. In the first plot, values were 0.18 for height and 0.29 for diameter; in the second plot, 0.32 for height and 0.38 for diameter. These moderate heritability values indicate that genetic selection for improved teak growth remains feasible.

For communities and forest managers in Indonesia, the results show that not all teak clones grow alike. Selecting the right clones can raise the productivity of community forests and teak plantations. However, the study notes that evaluation was limited to five years of age, so long-term observation is needed to confirm clonal superiority.

Source and how to cite

This story is based on the research article Genetic Parameter Estimation of Teak Clonal Test At 5 Years Old in Wonogiri, Central Java by Hamdan Adma Adinugraha Hamdan and Mahfudz Mahfudz, published in Jurnal Wasian Vol. 3 No. 1 (2016). The full article is free to read on the Jurnal Wasian website.

Cite the original article (APA 7):

Hamdan, H. A. A., & Mahfudz, M. (2016). Genetic Parameter Estimation of Teak Clonal Test At 5 Years Old in Wonogiri, Central Java. Jurnal Wasian, 3(1), 17–24. https://doi.org/10.62142/9jtx2319

If you use these findings in coursework, a thesis or other writing, cite the original article above, not this news story. The original article is licensed CC BY-NC 4.0.