• 식물분류학회지
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• 제37권4호
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• pp.387-393
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• 2007

태백산맥에서 발견된 Saussurea속의 신식물을 태백취(S. grandicapitula)로 기재하였다. 우리나라 특산인 본 종은 크기가 70-100cm에 달하는 장대한 식물로, 잎 뒷면이 창백한 녹색이며, 적갈색의 얽힌 털이 엽병에 나고, 수개의 두화가 짧은 화경에 달리며, 구형의 커다란 총포에는 갈색의 얽힌 털이 밀생하고, 포편은 뒤로 젖혀지기도 하는 특징을 가져서, 한반도 북부나 일본의 다른 종들과는 명확히 구별된다. 이는 태백산맥의 눈 많은 환경에 적응 진화한 종으로 생각된다.

• 식물분류학회지
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• 제50권3호
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• pp.351-355
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• 2020

Argyreia gyrobracteata Traiperm & Chitchak (Convolvulaceae) is newly recorded in Vietnam. It is similar to A. mekongensis Gagnep & Courch in having a white campanulate corolla but differs from that species by having whitish surface of the abaxial leaf, narrowly lanceolate or linear-oblong, curly, rolled up the bract with a longer length of the petiole and a shorter pedicel. It was previously known only in Thailand, but was recently found in Lam Dong Province, Vietnam, for the first time. The present study provides a detailed description, colorful photos and the distribution of the species. Furthermore, a comparison of the diagnostic characters between this species and a related species in Vietnam, A. mekongensis Gagnep & Courch, is provided.

• 한국식물병리학회지
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• 제14권5호
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• pp.458-462
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• 1998

Stem rot symptomof lily caused by Phytophthora was observed in Chilkok, Korea in 1997. Oogonia of Phytophthora were abundantly developed on epidermal tissues of stem and leaves of the diseased plants. The casual fungus was identified as Phytophthora cactorum based on their cultural and morphological characteristics. Sporangia were markedly papillate and the shape was broadly spherical to ovoid both on agar and in water. The size was 28~44$\times$20~28 ${\mu}{\textrm}{m}$ (av. 36~24) and a short pedicel was attached to each sporangium. The fungus was homothallic and oogonia were 28~32 ${\mu}{\textrm}{m}$ (av. 30) in size and slightly yellow. Antheridia were paragynous and spherical or irregularly club shaped. Optimal temperature for mycelial growth was 25~27$^{\circ}C$. The fungus did not grow under 6$^{\circ}C$ and over 34$^{\circ}C$. The fungus was highly pathogenic to three cultivars of lily. Symptom was developed at 4-day after artificial inoculation with zoospores (103 cell/ml) on the stem of lily. The symptom was identical to those produced by natural infection in the field and the plant was blighted within 14 days after inoculation.

• The Plant Pathology Journal
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• 제19권6호
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• pp.291-293
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• 2003

Leaf spot and blight disease of tree peony (Paeonia suffruticosa Andr.) was found in an apartment garden in Daegu in May 2003 for the first time in Korea. The causal organism was identified as Phytophthora cactorum (Leb. And Cohn) Schroeter. The causal fungus was homothallic, and produced distinctively papillate, ovoid to subspherical, and caducous sporangia with pedicel. Sporangia that formed in water measured 23.4-42.9$\times$21.5-35.1 $\mu\textrm{m}$ in range with an average of 35.3$\pm$4.6${\times}$26.9$\pm$36.0 $\mu\textrm{m}$, I/b ratio=1.31, papillae approximately 3.7 $\mu\textrm{m}$ high, and pedicels 2.8 $\mu\textrm{m}$ long. Oogonia were spherical and 21.5-37.1 $\mu\textrm{m}$ in diameter with an average of 29.6$\pm$4.9 $\mu\textrm{m}$. Oospores were spherical, mostly plerotic, and light orange brown when mature, and measured 19.5-31.2 $\mu\textrm{m}$ in diameter with an average of 25.2$\pm$4.4 $\mu\textrm{m}$. Antheridia were almost ovoid or club-shaped and 1l.7-15.6$\times$9.8-11.7 $\mu\textrm{m}$ in size.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2018년도 춘계학술발표회
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• pp.40-40
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• 2018

Pseudostellaria Pax (Caryophyllaceae) is a small genus distributed in temperate region. It consists of 25 species presenting high diversity in Asia. Pseudostellaria longipedicellata S. Lee, K. Heo & S. C. Kim was first announced as new species in 2012. Morphological characters of P. longipedicellata are closely related to those of Psedusotellaria palibiniana and Psedusotellaria okmotoi. These are distinguished from P. longipedicellata by shorter pedicel and puberulent pedicels, respectively and by being distributed allopatically between P. longipedicellata and rest of species. The complete chloroplast genome of P. longipedicellata was successfully rescued from raw reads generated by HiSeq2000. Its total length is 149,626 bp consisting of four regions: large single copy (LSC) region (81,292 bp), small single copy (SSC) region (16,984bp), and inverted repeats (IRs; 25,765 bp per each). It contained 126 genes (81 coding DNA sequence (CDS), eight rRNAs, and 37 tRNAs); 18 genes (seven CDS, four rRNAs, and seven tRNAs) are duplicated in inverted repeat regions. The overall GC content of P. longipedicellata is 36.5% and in the LSC, SSC, and IR regions were 34.3%, 29.3%, and 42.4%, respectively. Based on phylogenetic analysis of chloroplast genomes of P. longipedicellata and relatives species presents clear phylogenetic positions of Pseudostellaria genus. This chloroplast genome will be an important sequence resources for further researches of Pseudostellaria genus.

• Journal of Ginseng Research
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• 제26권1호
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• pp.17-23
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• 2002

Gibberellic acid (GA) was applied to field-grown 3-year-old North American ginseng (Panax quinqueiolius L.) between 1 and 4 times, before and during bloom in 1999. Applications of both GA$_3$ and GA$\sub$4+7/ four times (x4) to the developing inflorescences increased maximum pedicel length, and seed head diameter and height. Treatment with GA$\sub$4+7/ increased mean and total root fresh weight linearly, whereas those treated with GA$_3$ did not show similar increases. Both GA$_3$ and GA$\sub$4+7/ at 50, 100 and 200 mg L$\^$-1/ (x4) increased the incidence of breaking of dormancy of perennating buds with GA$_3$ being twice as effective as GA$\sub$4+7/. Both GA$_3$ and GA$\sub$4+7/ treatments resulted in an increased number of new bud initials forming per root, with the number of new initials per root increased two-fold by the GA$_3$ sprays compared to GA$\sub$4+7/.

• 식물분류학회지
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• 제38권3호
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• pp.233-250
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• 2008

한국 특산종인 노각나무(Stewartia koreana Nakai ex Rehder)의 분류학적 위치를 재검토하기 위해, 노각나무와 근연 분류군의 외부형태와 ITS 염기서열을 조사하였다. 노각나무는 일본에 분포하는 S. pseudocamellia와 외부 형태적으로 매우 유사하였으나, 노각나무는 잎이 대형이고 소화경의 길이가 2.5 cm 이상인 점에서 S. pseudocamellia와 구별되었다. ITS 염기서열을 분석한 결과 노각나무는 S. pseudocamellia와 별개의 분계조를 형성하였다. 따라서 외부형태 및 ITS 염기서열 결과는 노각나무가 S. pseudocamellia와 다른 별개의 한국 특산종임을 지지해 주었다.

• Journal of Species Research
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• 제9권2호
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• pp.117-121
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• 2020

Prunus glandulosa Thunb. [=Cerasus glandulosa (Thunb.) Sokolov] (Rosaceae) is native to the warmtemperate region of China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hebei, Henan, Jiangsu, Shaanxi, Shandong, Sichuan, Yunnan, and Zhejiang Provinces). It is naturalized in the United States (i.e. Alabama, Michigan and North Carolina) and Canada (Ontario). This species, previously only recorded as introduced or cultivated plants on the Korean Peninsula, was confirmed to be naturally distributed in the southwestern coast islands(i.e. Geomun-do, Chuja-do and an uninhabited island in Shinan-gun of Jeollanam-do). Prunus glandulosa Thunb. is distinguished from a related taxon P. japonica var. nakaii (H. Lév.) Rehder by pedicel 8-12 (-16) mm long, linear stipules, glabrous style, and pink petals. The morphological characters and illustration of P. glandulosa Thunb. are provided with line drawings and photographs from the natural habitat. In addition, it is likely that a new habitat will be found by plant biodiversity investigations through the southwestern coast islands. Further research is needed to determine its population size, distribution, and threats, as well as identify appropriate locations for conservation collection of germplasm.

• 한국식물병리학회지
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• 제13권3호
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• pp.139-144
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• 1997

사과 줄기 밑둥을 썩히는 역병 (collar rot)이 경북의 사과 재배지역에 널리 발생하고 있으며, 충북, 충남, 전북 등의 일부 지역에서도 발생이 확인되었다. 이 역병은 주로 M26이나 M9를 왜성대목으로 사용한 후지품종에 심하게 발생되었는데, 발병율은 포장에 따라 큰 차이를 보이지만 의성, 군위, 예산, 무주 등지의 일부 포장에서는 이병주율이 45~80% 정도로 아주 높았다. 수집된 25 균주의 균학적 특성을 조사 결과 모두 Phytophthora cactorum으로 동정되었는데, 이들은 배지에서나 물 속에서 유두돌기가 뚜렷하며, 계란형의 쉽게 이탈되는 다량의 유주자낭을 형성하였고 짧은 자루 (약 4 ${\mu}m$)를 부착하고 있었다. 자웅동주 균으로 10% clarified V8 배지에서 다량의 난포자를 형성하였는데 모든 장정기는 측착 (paragynous) 하였다. 모든 공시 균주는 5$^{\circ}C$ 이하와 33$^{\circ}C$ 이상에서는 자라지 못하였으며 난포자도 형성되지 않았다. Phytophthora cactorum에 의한 사과 줄기역병은 국내에서 기록된 바가 없어 본 병해를 최초로 보고하는 바이다.

• 한국약용작물학회지
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• 제4권3호
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• pp.199-204
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• 1996

시호의 화기구조 및 화기내 각 기관의 발달과정을 파악하여 육종의 기초자료로 활용하고자 본 시험을 수행하였다. 소화의 전체크기는 2mm정도로 매우 작으며, 산경 및 소산경의 길이는 각각 22.5mm, 3.6mm이었다 또한 자예, 웅예의 길이는 각각 1.0mm, 1.3mm이었고, 자방표면은 길이 0.9mm, 폭 1.4mm정도를 나타내었다. 시호의 화기 발달과정 각 시기는 웅예출현기 $1{\sim}6$일, 화판탈락 및 자예출현기 $6{\sim}8$일, 자예성숙기 $8{\sim}16$일, 자예퇴화기 16일 이후로 구분할 수 있었다. 따라서 시호는 자웅이숙 중 웅예성숙으로 타화수정을 하는 식물로 인정되었다.