• 한국약용작물학회지
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• 제19권1호
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• pp.24-30
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• 2011

This text was analyzed and investigated the vegetation and floristic composition by cluster analysis and classification of phytosociological method, to evaluate the species composition, habitat environment and community structure of Liriope platyphylla and Liriope spicata group in Korea. The southeast slope gradient of the habitat of L. platyphylla and L. spicata was 6.7 to 8.4%, and the habitat altitude of L. platyphylla (41.0 m), L. spicata (114.9 m) was different. Habitat distribution of L. spicata was broader than L. platyphylla. Appearing plants of L. platyphylla and L. spicata group was 58 taxa, 99 taxa, respectively, and Coverage of tree layer was 87.5%, 92.5% respectively. In genus Liriope group, the highest appearing frequency of plant grow in the moist valley as Quercus serrata. Thus, plants of genus Liriope growth was better in moist shade. The vegetation of L. platyphylla group was classified into Quercus serrata community, Castanopsis sieboldii community, Pinus densiflora community and Pinus thunbergii community, and the Liriope spicata group was classified into Quercus serrata community, Quercus alien community, Quercus acutissima community, Prunus verecunda community, Robinia pseudoacacia community, Pinus densiflora community and Pinus thunbergii community. In genus Liriope group, Quercus serrata and Pinus densiflora communities was the closest the similarities.

• Journal of Plant Biology
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• 제39권2호
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• pp.149-159
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• 1996

The order of Rhododendro-Quercetalia mongolicae representing temperate oak forests in Korea was characterized in terms of presence of taxa of different rank. 140 releves were analysed for percentage contribution of each species, genera and families in syntaxa under consideration as well as extracton of diagnostic genera and families for syntaxa by an ordination technique. The Rhododendro-Quercetalia is characterized by high diversity of tree and shrub species contributing 40% of the total floristic composition as well as by a high contribution of the genus Rhododendron and the absence of the genus Fagus, characteristic of the QuercoFagetea sensu lato. The character families for the Rhododendron and Quercus include Liliaceae and Compositae, whereas Acer, Carex, Viola, Rhododendron and Quercus are the most common among genera. Rhododendron and Quercus are regarded as the transgressive cheractergenera, whereas the families of Pinaceae and Ericaceae are considered companions (in sense of the terminology of the Braun-Blanquet syntaxonomy) for the order. Family appeared to be an inadequate rank for diagnoses of alliances and suballiances. On the other hand, genus was found to be the most effective rank in differentiating the alliances and suballiances. The Lindero-Quercenion shares the same character-genera with the order Rhododendro-Quercetalia. Character genera of the suballiances Callicarpo-quercenion are Carpinus, Styrax, Smilax and Callicarpa, and those of the Pino-Quercion list Euonymus, Saussurea and Tilia.

• Journal of Ecology and Environment
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• 제44권4호
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• pp.229-240
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• 2020

Background: Genus Quercus is a successful group that has occupied the largest area of forest around the world including South Korea. The acorns are an important food source for both wild animals and humans. Although the reproductive characteristics of this genus are highly variable, it had been rarely studied in South Korea. Therefore, in Seoraksan and Odaesan National Parks (i) we measured the acorn production of Quercus mongolica, an overwhelmingly dominant species in South Korea, for 3 years (2017-2019), (ii) evaluated the spatial-temporal variation of acorn production, and (iii) analyzed the effects of oak- and site-related variables on the acorn production. Results: The annual acorn production of Q. mongolica increased 36 times from 1.2 g m-2 in 2017 to 43.2 g m-2 in 2018, and decreased to 16.7 g m-2 in 2019, resulting in an annual coefficient of variation of 104%. The coefficient of spatial variation was high and reached a maximum of 142%, and the tree size was the greatest influencing factor. That is, with an increase in tree size, acorn production increased significantly (2018 F = 16.3, p < 0.001; 2019 F = 8.2, p < 0.01). Elevation and slope also significantly affected the production in 2019. However, since elevation and tree size showed a positive correlation (r = 0.517, p < 0.001), the increase in acorn production with increasing elevation was possibly due to the effect of tree size. The acorn production of Odaesan for 3 years was 2.2 times greater than that of Seoraksan. This was presumed that there are more distribution of thick oak trees and more favorable site conditions such as deep soil A-layer depth, high organic matter, and slower slopes. Conclusion: As reported for other species of the genus Quercus, the acorn production of Q. mongolica showed large spatial and annual variations. The temporal variability was presumed to be a weather-influenced masting, while the spatial variability was mainly caused by oak tree size.

• Journal of Plant Biology
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• 제30권4호
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• pp.267-276
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• 1987

A pollen analytical study was carried out on the accumulated humus samples collected from 27 sites under the different plant communities of Mt. Seolag. These pollen spectra were then compared with the actual vegetation. The aboreal pollen(AP) and non-abnoreal pollen(NAP) were 1 Family 25 Genus and 5 Family 5 Genus, respectively. Among the aboreal pollen identified, the pollen of Pinus, Quercus, Betula and Acer were appeared in abundance and the coniferous pollen of Pinus was occupied at least 20%-65% through all the sites studied. The pollens of Abies, Betula, accer, Quercus, Carpinus, Corylus, Fraxinus, Styrax, Prunus and Ericaceae were in accordance with the present vegetation but the other pollens were inconsistent with the actual vegetaton. It suggests that it was caused by the difference between Wehseolag and Namseolag of subalpine zone in Mt. Seolag was 200 m by pollen spectra. Quercus was distributed at the lower part of Namseolag and the subalpine boreal elements were increased with increasing altitudes. The pollen spectra of each site was put together into 5 groups of pollen assemblage by cluster analysis and the community coefficient (CC) was over 60% between all sites studied.

• Journal of Plant Biology
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• 제27권2호
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• pp.61-72
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• 1984

The concept of natural grouping of plant designated as the "Amentiferous" is no longer given serious credence, and many of the families included in this grouping have been dispersed in diverse order. Because a review of taxonomic treatments of amentiferous taxa reveals diverse classifications, it has become necessary to investigate new characteristics and attempt to determine the significance of these characteristics in terms of amentiferous taxonomy. Protein analyses by isoelectrofocusing(IEF) and rocket immunoelectrophoresis(RIE) have proved to be useful in the delicitation of Quercus taxa using pollen extracts from selected taxa. When Quercus pollen extracts were separated by electrophoresis based on their isoelectric points in a stable pH gradient and substrates for estrase activity were stained, ten bands were revealed between pH 5-14. Within Lepidobalanus grouping, a great diversity in the pollen protein zymograms was observed with some segregation corresponding to the designated taxonomic sections. Two taxa of Cyclobalanopsis produced a zymogram that is somewhat similar to taxa included within the section Prinus of Lepidobalanus, and less similar to taxa within the section Cerris of the same subgenus. Three tested taxa of the Cerris are in the similar zymogram each other, being segregable from the taxa of Prinus. Quantitative and qualitative analyses for serological relationships within and among th Quercus were also employed. To calculate the degree of protein similarity, total rocket heights obtained from RIE provided an index of serological correspondence(SC). It is reconfirmed that the Quercus is distantly separated from the Fagus according to SC. Comparative data from rocket number and SC in the tested taxa of Quercus also indicate that Lepidobalanus is separable from Cyclobalanopsis. Within the Lepidobalanus Q. acutissima and Q. acutissima x variabilis are almost homogeneors and distinguishable from the other tested taxa of same subgenus. Although the number of taxa tested has been limited, the overall serological evidence best reflects the classification proposed by Redher(1940) and Melchior (1964), having the genus Quercus subdivided into three subgunera: Erythrobalanus, Lepidobalanus, and Cyclobalanopsis.alanopsis.

• 임산에너지
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• 제21권3호
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• pp.34-45
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• 2002

2001년 6월부터 10월(14회)까지 난대림 지역내 소나무ㆍ붉가시나무 임분의 벌채수준별 버섯 다양성 및 발생빈도를 조사한 결과는 다음과 같다. 1. 조사기간 동안 동정한 균류는 총 1문 1아문 2강 3아강 5목 15과 30속 50종이었다. 진정담자균 강의 원생모균아강에서 1과 1속 1종, 모균아강의 주름버섯목은 7과 18속 37종, 민주름버섯목은 3와 6속 7종, 복균아강은 4과 5속 5종이 조사되었다. 2. 외생균근성 버섯은 총 5과 10속 22종 137개체가 조사되었으며, 소나무 대상벌채지에서는 3과 6속 10종 79개체가 조사되었고, 붉가시림의 대상벌채지에서는 4과 5속 9종 24개체, 정량간벌지에서 3과 4속 10종 25개체가 각각 조사되었다. 3. 기주선택성에 있어 제주쓴맛그물버섯은 소나무림 조사지의 편백나무 뿌리 및 지표면에서 만발생되어 편백나무에 대한 선택성이 매우 높은 것으로 판단되며, 암회색광대버섯아재비는 두 지역에서 모두 조사되어 기주의 선택성이 넓은 것으로 조사되었다. 4. 외생균근성 버섯의 분포에 영향을 미치는 환경요인의 상관을 분석한 결과, 상대습도와 강수량이 중요한 요인으로 분석되었다.

• Journal of Plant Biology
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• 제24권4호
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• pp.217-231
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• 1981

본 연구는 화분단백질을 대상으로 Quercus속 기본종간의 grouping 확인과 그들간의 유사도를 혈청학적 방법으로 결정하고, rocket immunoelectrophoresis의 기술적 가치와 계통분류학적 가치를 논의하였다. 전반적인 정량적, 정성적 data로 보아 Quercus속이 Fagus속과는 멀리 분리되고, Quercus 속내에서는 Cyclobalanopsis 아속이 Lepidobalanus 아속으로부러 뚜렷하게 분리된다. 그러나 Cyclobalanopsis아속이 독립된 속계급까지의 승격은 보증되지 못한다. Lepidobalanus아속에 속하는 종들로 생산된 면역혈청은 같은 아속내의 종들과의 반응에서 강하게 나타났다. 특히 Q. aliena, Q. donarium, Q. serrata는 혈청학적 유사도에 있어서 상호일동으로 나타났다. Q. acutissima는 상기한 종들로부터 약간 멀어진 것 같고, 잡종인 Q. acutissima$\times$variabilis와는 거의 동일성을 나타냈다. 본 계통분류학적 연구에 이용된 rocket immunoelectrophoresis는 새로운 기술로서 그 가치가 증명되었다. 단백질 유사성의 정도를 얻기 위하여 이 기술이 응용되었는데, 모든 rocket height의 총 합계로 결정되었다

• Mycobiology
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• 제50권2호
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• pp.104-109
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• 2022

Fungi of the genus Tuber are ectomycorrhizal fungi that form a symbiotic relationship mainly with oak and hazel trees. Tuber spp. exhibit a highly selective host plant preference; thus, for cultivation purposes it is important to select an appropriate host plant for successful mycorrhization. In addition, as mycorrhizal characteristics differ according to Tuber spp., it is necessary to understand the differences in mycorrhizae according to the fungal species. Tuber huidongense and Tuber himalayense were recently discovered in Korea; therefore, we used spore suspensions from these two species to inoculate two species of oak trees, Quercus acutissima and Quercus dentata, to compare colonization rates and morphologies of the mycorrhizae. The colonization rates demonstrated that the different Tuber spp. favored different host plant species. In addition, unique morphological and anatomical characteristics were observed for T. huidongense and T. himalayense depending on the host species. These findings can lead to new economically important agricultural activities related to truffle cultivation in Korea.

• Journal of the Korean Wood Science and Technology
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• 제7권1호
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• pp.3-7
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• 1979

A bark comprises about 10 to 20 percents of a typical log by volume, and is generally considered as an unwanted residue rather than a potentially valuable resources. As the world has been confronted with decreasing forest resources, natural resources pressure dictate that a bark should be a raw material instead of a waste. The utilization of the largely wasted bark of genus Pinus, Quercus and Populus grown in korea can be enhanced by Knowing its chemical Properties. Specially, uses of bark in mulching, growing media and soil amendment can be enhanced by knowing pH and C.E.C values. In this paper, an investigative study is carried out on the pH-and C.E.C-values. The results may be summarized as follows: 1. Bark is acid in nature, and pH values of bark varying from 3.3 to 4.7, is lower than that of wood.pH value of Pinus is the lowest. 2. Cation exchange capacity of bark is greater than that of wood, silt loam soil, and wheat straw.CEC of bark is 45.7 meq/100gm in Pinus, 41.8 meq/100gm in populus, 37.8 meq/100gm in Quercus.

• 임산에너지
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• 제19권1호
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• pp.38-48
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• 2000

한국산 참나무아속 화분형태의 유사관계 및 종내변이를 조사하기 위하여 화분립의 국축길이, 적도면 폭, 구의 길이, 구의 폭을 측정하고 화분립의 국축길이에 대한 적도면 폭의 비율을 계산하였다. 본 연구 결과를 근거로 하여 군집분석을 수행한 결과 상수리나무와 굴참나무의 화분형태가 가장 유사관계가 높은 것으로 나타났다. 조사된 수종 중 화분립의 크기에 있어서 폭 넓은 변이를 나타내는 떡갈나무의 경우에는 polypoid와 (또는) aneuploid의 형태가 존재하는 것으로 추정되었다. 참나무아속 수종들의 ploidy levels에 대한 연구가 수행되어야 할 것이다.