• Proceedings of the National Institute of Ecology of the Republic of Korea
• /
• 제3권1호
• /
• pp.23-31
• /
• 2022

The analysis of seven islands in Gogunsan archipelago, Korea with insect fauna and vascular plant flora was carried out based on a field survey conducted in May, July, and September. As a result, a total of 2,817 insect individuals including 264 species and 315 taxa of vascular plant were recorded. Bangchukdo the largest island among the seven islands showed the largest number both insect species and plant taxa. The similarity analysis suggested that the nearness of each island strongly affected the insect fauna and vascular plant flora on each island. In addition, there was significant correlation between the areas of each island and the numbers of insect species (Spearman's correlation coefficient=0.857, P-value=0.014). In the future, the results of this study can be used as data related to island ecology and conservation.

• Journal of Plant Biology
• /
• 제34권4호
• /
• pp.274-281
• /
• 1991

The relationship between elongation of hypocotyl and its vascular transition was studied with seedling of Glycine max. the hypocotyl elongation proceeded acropetally from the base of hypocotyl toward the cotyledonary node. The vascular transition did not occur in the basal region of the hypocotyl, which did not nearly elongate, with exarch radial vascular bundles. However, the vascular transition was almost completed at the middle part of the hypocoty, more or less elongated, with endarch collateral vascular bundles. Such bundles also appeared in the uppermost region of the hypocotyl, in which the elongation was the most striking. These results suggested that the vascular transition was related to the hypocotyl elongation and that the transition of primary vascular system in Glycine max seedling was established by rather rapid process. Our observations of the serial sections from root to hypocotyl revealed that the vascular system through the root-hypocotyl-cotyledon was a unit, to which one of the epicotyl that did not participate in transition was superimposed.

• 한국환경복원기술학회지
• /
• 제21권4호
• /
• pp.25-42
• /
• 2018

The purpose of this study is to present the basic data for management of ecologically restored stream by surveying and analysing the vascular plants distributed in Chunghyocheon stream, Gyeongju-si. The survey of vascular plants in this site was conducted before and after restoration. The number of vascular plants were summarized as 276 taxa including 68 families, 188 genera, 242 species, 1 subspecies, 29 varieties and 4 forms. The rare plants were 2 taxa including Prunus yedoensis Matsum. and Iris ensata var. spontanea (Makino) Nakai, and the Korean endemic plant was Lespedeza maritima Nakai. The specific plants by floristic region were 13 taxa including 1 taxa of grade V, 3 taxa of grade III, 1 taxa of grade II and 8 taxa of grade I. The naturalized plants were 62 taxa including Persicaria orientalis (L.) Spach, Lepidium virginicum L., Poa compressa L. and so forth. The invasive alien plants were 3 taxa including Ambrosia artemisiifolia L., Aster pilosus Willd. and Lactuca scariola L.. The hydrophytes were 34 taxa including 26 taxa of emergent plant, 1 taxa of floating-leaved plant, 2 taxa of free-floating plant and 5 taxa of submerged plant.

• Journal of Plant Biology
• /
• 제29권2호
• /
• pp.129-133
• /
• 1986

Transections of the stem region close to the shoot apex show the occurrence of an outer, complete ring of procambium and an inner group of discrete procambial strands. From the outer ring, small, discrete vascular bundles and vascular cambium originate, while the inner group forms the discrete, medullary vascular bundles with intrafascicular cambium. Secondary thickening is essentially due to the activity of the cylinder or complete ring of vascular cambium that originates from the procambium. The medullary intrafascicular cambia also form some secondary tissues. The vascular cambium produces secondary xylem inwards and secondary phloem outwards as in the normal secondary thickening process. The distinctive feature, however, is perpetual discreteness of the medullary vascular bundles. No successive series of cambia or secondary vascular bundles are found.

• Proceedings of the National Institute of Ecology of the Republic of Korea
• /
• 제2권3호
• /
• pp.188-197
• /
• 2021

This study aimed to obtain fundamental data for demonstrating biodiversity of vegetation of East Asian alder (Alnus japonica) Forest Wetland of Heonilleung Royal Tombs. A total of 166 vascular plants (159 species, three subspecies, three varieties, and one cultivar) belonging to 132 genera and 59 families were found, accounting for 8.3% of 1,996 vascular plant species found in Seoul. Therophyte was the most common life-form of plants in Heonilleung Wetland. As for rare plant species, one Least Concern (LC) species was found. There were 15 floristic regional indicator species in the research area. Three of them belonged to floristic grades III and IV. This indicates that their habitats are discontinuous and isolated to some degree. Nineteen invasive alien plant species were found, most of which were introduced from North America after the year 1964 with a spread rate of V (widespread, WS).

• 한국자원식물학회지
• /
• 제11권1호
• /
• pp.30-39
• /
• 1998

Carrot seedling emgryos showing variations in cotyledon number were selected and anatomical comparisons of the embryo vascular systems were performed between the variants and normal two cotyledonary (5) embryos from 800 seedings germinated . Externally, all of the four and six cotyledonary embryos had two cotyledonary petioles. Each of the cotyledonary petioles divided into two or three on the upper part fo the petiole which result in four and six cotyledons, respectively. However, the embryos had three different cotyledonary petioles in the three cotyledonary embryos. On the basis of the pattern of vascular system, the four and six cotyledonary embryos had the same basic vascular system as fnormal two cotyledonary embryos, Therefore the cotyledon number abnormality could result from the branching split of the abnormally thickened upper part of the cotyledonary petiole. However, the three cotyledonaryembryos had a different vascular system from the normla two cotyledonary embryos. They could be regarded as different varieties form the two cotyledon embryos. All embryos observed had short cylindrical plumule sheath which formed by the fusion of the cotyledon bases. The presence of plumule sheath strontgly implied that the initiation of the cotyledons was not from the two localized primordia but from the circular proimordiu formed at the blobular stageof embryo, and it is not consistent with current views of cotyledon initiation. On the formation of the primary vascular system of carrot seedlings, it is suggested that the primary vascular system of the plumule was formed independently from that of the root-hypocotyle-cotyledon system.

• 한국자원식물학회:학술대회논문집
• /
• 한국자원식물학회 2002년도 춘계 학술발표대회
• /
• pp.38-38
• /
• 2002

• 한국환경복원기술학회지
• /
• 제12권5호
• /
• pp.42-58
• /
• 2009

This study was carried out to survey the vascular plants of the construct-reserved site of ecological forest in Kohang-ri, Sangri-myeon, Yecheon-gun, Gyeongsangbuk-do, Korea. The results are as follows. The vascular plants in this site were recorded as 392 taxa; 85 families, 254 genera, 341 species, 45 varieties and 6 forma. The Korean endemic plants were 5 taxa; Salix hallaisanensis, Clematis trichotoma, Chrysosplenium barbatum, Philadelphus schrenckii and Weigela subsessilis. The rare plants designated by Korea Forest Service were 2 taxa; Iris ensata var. spontanea and Aristolochia contorta. The naturalized plants were 25 taxa; Bromus tectorum, Dactylis glomerata, Panicum dichotomiflorum, Bilderdykia dumetora and so forth. In the results of analysis by floristic region, the specific plants were summarized as 31 taxa; Matteuccia struthiopteris, Oxalis obtriangulata, Betula davurica, Cimicifuga heracleifolia and so forth. The plants with approval for delivering oversea were 4 taxa; Salix hallaisanensis, Aristolochia controrta, Clematis trichotoma and Chrysosplenium barbatum. The plant resources were 186 taxa of ornamental plant, 241 taxa of edible plant, 274 taxa of medicinal plant and 202 taxa of others.

• Journal of Plant Biology
• /
• 제36권1호
• /
• pp.29-34
• /
• 1993

Observation was made on early ontogeny of vascular cambium in the cotyledonary node of Pinus koraiensis seedling in order to clarify the cambial ontogeny of the node which was hardly elongated. In transverse view, the derivatives by the early periclinal divisions at the outer region of the procambial strands differentiated to protophloem with establishing a certain degree of radial seriations. Later, some cells in the central region of the procambial strands begin divide periclinally, eventually the cells, differentiate gradually to the vascular cambium. In tangential view, early procambium is consisted of homogeneous short cells with transverse end walls which are tansformed into the long cells and short cells gradually. The long cells continue intrusive growth and the short cells repeat transverse division. Finally, the long and short cells differentiated to cambial fusiform initials and ray initials respectively. In tangential section, the differentiation pattern of cambial initials resembles that of the stem of Ginkgo biloba. But in transverse view, the characteristics in the origin of vascular cambium of the cotyledonary node resembles that of root. The vascular cambium in cotyledonary node is completed after eleven prophylls were formed.

• 한국자원식물학회지
• /
• 제31권5호
• /
• pp.575-589
• /
• 2018

본 연구는 토함산지구 내 만호봉 일대에 분포하는 관속식물 상을 조사 및 분석함으로서 경주국립공원의 생태계를 관리 및 보전하기 위한 기초 자료 제공에 목적이 있다. 2012년 5월부터 2017년 8월까지 관속식물상을 조사한 결과는 다음과 같다. 증거표본을 기초로 관속식물상 목록을 작성한 결과, 91과 292속 397종 4아종 48변종 8품종 등 총 457분류군으로 나타났다. 멸종위기야생생물은 2분류군, 희귀식물은 11분류군, 한국특산식물은 14분류군이 조사되었다. 식물구계학적 특정식물은 총 39분류군으로, V등급은 3분류군, IV등급은 5분류군, III등급은 2분류군, II등급은 11분류군, I등급은 18분류군이다. 귀화식물은 33분류군이고 귀화율(NI)과 도시화지수(UI)는 각7.2%, 10.3%이다. 생태계교란식물은 돼지풀과 미국쑥부쟁이 2분류군이다.