Comparison of Anatomical Characteristics for Wood Damaged by Oak Wilt and Sound Wood from Quercus mongolica

Abstract

The aim of this study was to investigate the anatomical characteristics of Quercus mongolica infested by oak wilt disease. To analysis the anatomical characteristics of the wood specimens infested by the oak wilt, the anatomical structures of an infected wood, a dead wood, and sound wood were observed at 10-year-old intervals from 10 to 50 annual rings using both an optical and a scanning electron microscope. The fiber length was measured in units of 5 annual rings from the pith, and the diameter of the vessel element and the ratio of the vessel including the tyloses were measured for each 10 annual ring. In the cross section, on the infected and dead wood specimens, mycelium was also observed with the tyloses in the vessel. There was no signification difference between the wood specimens in the fiber length and the vessel diameter of the vessel element. The fiber length was not difference after 20-30 annual rings which is a part of juvenile wood. The average of the vessel ratio including tyloses in the infected wood was the highest. Especially, the ratio of tyloses was the highest 40-50 annual rings in the infected wood and the dead wood. Therefore, the large difference between the infested wood by oak wilt and the sound wood was the ratio of tyloses. This result can be used as a basic data to utilize the infested wood.

Fiber morphology in walnut branchwood: Relation to the branch diameter, branching level, and tension wood

“…Therefore, the fibers of the tension wood were significantly thinner than the fibers of the opposite wood (Table 5, fifth row), while the difference in the fiber lumen diameter was not significant (Table 5, fourth row). The morphological difference in the fibers between the tension and opposite wood studied here agreed in general terms with previous descriptions of other hardwoods, e.g., Quercus mongolica (Lee et al 1997), Populus × euramericana (Niu et al 2010), Magnolia obovate, and Magnolia kobus (Yoshizawa et al 2000). As previously mentioned, tension wood is rich in gelatinous fibers, and the gelatinous layer has a high cellulose content, which is a favorable factor for kraft pulping and papermaking (Aguayo et al 2012).…”

“…There are no major differences between the dimensions of gelatinous fibers and normal fibers. Some researchers have reported differences in the fiber dimensions between tension and opposite wood, but the differences are generally not major (Lee et al 1997;Yoshizawa et al 2000;Niu et al 2010). Due to the above factors, walnut branchwood is difficult to split, and farmers rarely use it as firewood.…”

Evaluation of the Basic Properties for the Korean Major Domestic Wood Species

“…The specimens for the green state were immersed in distilled water until constant dimensions were reached, prior to the experiment. The specimens for the air-dry state were humidified in a constant temperature (20℃) and relative humidity (65%) chamber until constant weights were reached, prior to the experi- Jang, 2022aJang, , 2022bJang, , 2022dJeon et al, 2018aJeon et al, , 2018bJeon et al, , 2020Laksono et al, 2023;Lee and Bae, 2021, Lee et al, 2021a, 2021b, 2021cMarbun et al, 2019;Nam and Kim, 2021;Park et al, 2018Park et al, , 2022Park et al, , 2023Purusatama et al, 2018;Savero et al, 2020 Width of cell -Thickness of cell wall -…”

Macroscopic and Microscopic Anatomical Characteristics of Six Korean Oak Species

“…Eom et al [11] examined the anatomical characteristics of Quercus wood in Korea. Recently, Jeon et al [12] compared the anatomical characteristics of oak-wilt-damaged Q. mongolica wood in South Korea. Wang et al [13] compared the anatomical characteristics of Q. acutissima and Q. variabilis from China.…”