Correlation and regression studies on wood properties of jack (Artocarpus heterophyllus Lam.) for effective timber utilization

Abstract

The interrelationships between different wood properties were carried out to check the dependence of one character over the other which defines the overall quality and performance of the jack wood Highly significant and positive correlation was noticed for a*value with ash content; volumetric shrinkage with green specific gravity; tangential shrinkage with radial shrinkage; holocellulose content with hemicellulose content. The negative and significant correlation has been recorded for L*value with a*value; green specific gravity with NaOH soluble extractives content. Highly significant and positive correlation was noticed for volumetric shrinkage with tangential shrinkage and radial shrinkage; tangential shrinkage with radial shrinkage; oven dry specific gravity with vessel area and ray width. The negative and significant correlation has been recorded for L*value with a*value, tangential shrinkage with fibre diameter. Highly significant and positive correlation was noticed for parameters related to physical and mechanical wood parameters except for The negative and significant correlation has been recorded for L*value with a*value, tangential shrinkage with fibre diameter. Regression studies also showed considerable relationships between the physical, chemical, anatomical and mechanical properties.