Effect of root growth potential, planting distance and provenance on the growth and survival of Gmelina arborea Roxb

Issue Date

1-2012

Abstract

The study was conducted in Matalam, Cotabato, Southern Philippines to test the effect of root classes, provenance and distance of planting on early field survival and growth of Gmelina arborea Roxb. The experimental design used in the study was a strip-split plot design with three replications. Analysis of variance revealed significant differences in the growth of Gmelina after one year. Strong genetic control over height, basal area and biomass were found. This result was supported by the positive and significant relationship of provenance with the same traits. Seeds from Quezon were significantly different in terms of merchantable and total height compared to Cotabato and Davao del Sur seed sources. While in terms of basal area and biomass, Quezon and Cotabato did not differ significantly. On the other hand, the three provenances did not vary significantly in terms of diameter breast height (dbh), tree volume and survival. Distance of planting also insignificantly affects height, diameter growth and survival of the tree. However, basal area, tree volume and biomass varied significantly. Root classes affected tree diameter, total height, survival rate, and volume significantly. All factors did not show variation on basal area and merchantable height. Root classes were found to be positively and significantly correlated with dbh, basal area, root and total tree biomass. © Rushing Water Publishers Ltd.

Source or Periodical Title

Asia Life Sciences

ISSN

0117-3375

Volume

21

Page

231-248

Document Type

Article

Language

English

Subject

Germination, Gmelina arborea, Growth, Philippines, Planting distance, Root classes, Seed provenance, Survival rate, Tree volume

Digital Copy

yes

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