Characteristics and some technological properties of Juglans regia L. trees grown in Duhok province

المؤلفون المشاركون

Sulayman, Hishyar H.
Dawud, Nasir A.
Abd al-Qadir, Aree Adil
Husayn, Bilnd J.

المصدر

مجلة جامعة دهوك

الناشر

جامعة دهوك

تاريخ النشر

2016-06-30

دولة النشر

العراق

عدد الصفحات

8

التخصصات الرئيسية

العلوم الطبيعية والحياتية (متداخلة التخصصات)

الملخص الإنجليزي

Juglans regia L.

is an oldest native species and cultivated throughout Kurdistan region\Iraq.

The sample trees were harvested from Duhok province.

Samples were taken at breast height from different ages of trees.

In this research, physical, anatomical properties of the wood were investigated, and some morphological properties of its wood also evaluated including the percentage of Heartwood (HWP) (31.49 %), Sapwood (SWP) (65.51 %), Bark percentage (BP) (21.74 %) and Annual Ring Width (ARW) (4.01cm).

The values of physical properties were: moisture content for HWP and SWP were (43.85, 59.50%), were for all studied trees were (52.89 %), whereas specific gravity for HWP and SWP were (0.701, 0.606) and for all studied trees was (0.671).

While basic density was(0.578g/cm3).Volumetric shrinkage and volumetric swelling were (12.56, 14.44 %), fiber saturation point (21.91%), cell wall (44.781%) and porosity (55.48 %).The values of anatomical properties were: fiber length(1.585 mm), fiber diameter at the mid-point of the fiber(34.00 μm),fiber double cell wall thickness(16.12 μm) and fiber lumen diameter (7.88 μm),vessel length (0.545mm), vessel diameter at the mid- point of the vessel(179.806 μm), vessel lumen diameter (134.136 μm), slenderness ratio(69.85), runkel ratio (2.339).

Due to moderate specific gravity and other physical properties, walnut wood is suitable for structural application.

Also could be the walnut fibers are a promising fibrous raw material for paper production.

نوع البيانات

أوراق مؤتمرات

رقم السجل

BIM-797432

• APA
• MLA
• AMA