STUDIES ON PHYSICO-CHEMICAL CHARACTERISTICS OF WOOD OF PROMISING WILLOW CLONES
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Date
2010
Authors
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Publisher
UHF,NAUNI,SOLAN
Abstract
ABSTRACT
The present investigation entitled “Studies on physico-chemical characteristics of wood of promising
willow clones” was carried out at the established trial plots by Department of Tree Improvement and laboratory of
the Department of Forest Products, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.)
during the year 2009-10. The experimental site lies in the mid hill zone of Himachal Pradesh with an elevation of
1250 m above mean sea level. It is located at 15 km south east of Solan with 30o 51¢ N latitude and 76o 11¢ E
longitude (survey of India Toposheet no. 55 F/1). The experimental area situated at the University Campus. The
study revealed significant variation between physico-chemical characteristics of wood of promising willow clones.
Among different physical characteristics clone 212/03 registered significantly maximum height, diameter and
wood percentage of 12.43m, 9.87cm and 87.07 percent, respectively. The maximum bark percentage of 36.13
percent was exhibited in clone SI-63-016. Also moisture content, specific gravity and fibre length showed
significant variation. The maximum moisture content of 110.49 was found in clone 131/25, specific gravity of 0.81
in clone MB-368 and fibre length of 1.93mm in clone 172. Among chemical characteristics of wood of promising
willow clones, significant variation was observed for those parameters studied. The maximum cold water
extractives, hot water extractives, alcohol-benzene extractives, lignin and holocellulose contents was noticed in
clones SI-64-17 (7.67 percent), NZ-1002 (11.33 percent), PN-721 (7.10 percent), V-99 (26.33 percent) and
131/25 (79.33 percent), respectively. The wood percentage had highly significant positive correlation with other
studied physical parameters viz. diameter and height. Also significant positive correlation was seen between
diameter and height, moisture content and holocelulose content, and moisture content and height. The highly
significant negative correlation was observed in bark percentage and wood percentages followed by bark
percentage vs. diameter, fibre length vs. hot water extractives, bark percentage vs. height and diameter vs.
specific gravity. Slightly positive and negative correlations were shown between extractives. Highly significant
positive genotypic and phenotypic correlation coefficients were obtained between diameter and wood percentage
while highly negative genotypic and phenotypic correlation coefficients were noticed between wood percentage
and bark percentage. Wide range of variability was seen for all the physico-chemical characteristics of wood of
promising willow clones. The values for phenotypic and genotypic coefficients of variability, heritability, genetic
advance and genetic gain ranged between 2.51-35.63 percent, 2.09-30.49 percent, 24.00-92.00 percent, 0.03-
31.20 and 3.95-53.73 percent, respectively.
Description
Keywords
biological phenomena, farmyard manure, cotton, land resources, productivity, sowing, gossypium hirsutum, organic fertilizers, yields, nitrogen