BANGLADESH JOURNAL OF FOREST SCIENCE
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
Hopea odorata Roxb (telsur) is a timber
species of the family Dipterocarpaceae. It is
available in Bangladesh, India, Myanmar,
Cambodia, Laos, Malaysia, Thailand and
Vietnam. In Bangladesh, telsur occurs naturally in
the forests of Cox’s Bazar, Chittagong and
Chittagong Hill Tract (CHT), and also planted in
forest plantations and as road side avenue trees
(Hossain 2015). The tree reached up to 45m in
height with the base of stem diameter of 4.5m.The
timber is valued for its durability, resistance to
insects and use for weight-bearing construction.
Telsur is a commercially valuable species, but
significantly disappearing from the natural
habitats. Therefore, Hopea odorata is currently
assessed as vulnerable in IUCN red list of
threatened species. Therefore mass plantation of
telsur is necessary for the national aspect.
This paper describes the selection of yemane {Gmelina arborea) plus trees. Using point
grading method, 24 plus trees (PTs) of yemane were selected at Talacogon, Mindanao, Philippines
to collect quality seeds and also to use these PTs as the base for future breeding and tree
improvement programmes. Average height of the selected plus trees was 25.50 m and the average
height of the comparison trees was 22.75 m. Selection differential for height was 2.75 m (12%).
Average diameter of the selected plus trees was 28.50 cm and the average diameter of the
comparison trees was 25.25 cm. Selection differential for the diameter was 3.25 cm (13%).
Average selection intensity was 1 tree out of 2,284 trees (approx. 1 tree in 4 ha).This is
comparatively a high selection intensity. It is recommended that for any future breeding
programme with Gmelina arborea, at least 50 plus trees should be included and the selection
intensity may be as low as one tree out of 10,000 trees.
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