Anatomical property variation inAcacia auriculiformisgrowing in Bangladesh

Abstract

Acacia auriculiformis A. Cunn. (ex Benth) is an extensively planted fast-growing species in Bangladesh. Understanding the anatomical property variation has significant importance in tree improvement and wood utilization. Radial variations of anatomical properties in 11-year-old trees were examined in this study. Vessel diameter increased gradually up to about 40-45% distance from pith and then levelled-off to bark. Fibre diameter gradually decreased toward bark, whereas fibre wall thickness showed a reverse pattern. In contrast to fibre proportion, vessel and ray proportions gradually increased from pith to bark. Cell wall proportion was nearly stable up to y70% distance from pith and then increased gradually to bark. Results suggest that air-dried density or compressive strength variation is mainly attributed by the fibre morphology, i.e. fibre diameter and fibre wall thickness (at 1% level). Significant variations among the trees in vessel and fibre diameters (at 1% level), and ray and axial parenchyma proportions (at 5% level) suggest the possibility of tree selection for breeding.

Variation in Growth, Wood Basic Density and Fiber Characters in Selected Clones of Acacia auriculiformis A. Cunn. Ex benth

“…Long fibres are more suitable for the manufacture of paper as it yields paper with greater resistance against tearing and a more open sheet structure [31,32]. The fibre length of A. auriculiformis clone IFGTBAA 23 (1140.60 µm) followed by IFGTBAA 18 (1082.90 µm) showed comparatively higher values than the values recorded in the same species were 1060 µm and 879 µm by Chowdhury et al, [33] and Chong et al, [34] respectively. The clones IFGTBAA 27 and IFGTBAA 34 also recorded comparable lumen diameter and fibre length as compared to the maximum values.…”

Morpho-physiological response of Acacia auriculiformis as influenced by seawater induced salinity stress

“…It is a fast growing nitrogen fixing multipurpose tree species which prevents exposure of soils to direct radiation from the sun using its perennial foliage as well as crown cover, and reduce the evaporation rate, resulting in less salt accumulation in the top soils (Tham & Liew, 2012;Khan et al, 2014;Sohel et al, 2016). Furthermore, it is extensively used to provide shade, form windbreaks, and the wood has been used widely for charcoal, fuel, pulp, tool handles, oars, paddles, packing cases, and furniture manufacturing (Shukla et al, 2007;Chowdhury et al, 2013). Therefore, if Acacia auriculiformis can be brought under plantation in the saline prone area, the existing agrarian land will be more productive through minimizing the detrimental effects of salts as well as to sustain crop productivity, which will help to maintain a wide range of ecological security.…”

NGHIÊN CỨU SỰ BIẾN ĐỔI CHIỀU DÀI SỢI GỖ KEO LÁ TRÀM (Acacia auriculiformis) TRỒNG TẠI TỈNH QUẢNG TRỊ, VIỆT NAM

“…Trên thế giới đã có nhiều công trình báo cáo về sự biến đổi chiều dài sợi gỗ Keo lá tràm. Cụ thể, Chowdhury và cộng sự [11] đã điều tra về sự biến đổi chiều dài sợi gỗ Keo lá tràm trồng tại Bangladesh. Các tác giả đã báo cáo chiều dài sợi gỗ là tăng dần từ tâm ra vỏ với sự biến động trong khoảng 0,89 mm đến 1,06 mm.…”

“…Kết quả phân tích phương sai ANOVA cũng chỉ ra rằng có sự khác biệt rõ ràng chiều dài sợi gỗ trung bình giữa 5 cây mẫu được quan sát trong nghiên cứu này (Bảng 2). Kết quả này là tương tự với báo cáo của Chowdhury và cộng sự [11]. Sự khác biệt về chiều dài sợi gỗ giữa các cây gợi ý rằng chiều dài sợi gỗ Keo lá tràm dòng Clt43 phụ thuộc vào từng cây.…”