• 생약학회지
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• 제27권2호
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• pp.129-135
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• 1996

Euphorbia ebracteolata Hayata is a perennial herb of Euphorbiaceae that has a cyathumal inflorescence, the glands of the involucres are rounded-cordate and reddish, stems are erect, thick and 40-50 cm high. The leaves are alternate and rather numerous. So far this plant has been known as a unreported species in Korea. However, as the result of this study, this plant was found to be widely distributed in Korea over eight habitats, i.e. Keunduk, Dokye and Kaliwangsan, Kangwon-do: Dunduksan, Kyongsangbuk-do: Okcheon, Chungcheongbuk-do: Manduksan, Baekyangsan and Naejangsan, Jeolanam-do. On the other hand, its variety, E. ebracteolata var. coreana Hurusawa which grows only in Poong-do, Kyongki-do was reviewed by comparative morphology and chemotaxonomy to be resulted in the same species, E. ebracteolata.

• Journal of Ginseng Research
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• 제5권2호
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• pp.92-98
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• 1981

This experiment was carried out to inverstigate the characteristics of growth of ginseng Plant on field conditions as affected by seedling weight. Weight of seedling ranged from 0.4 to 1.8g were divided into seven classes at interval of 0.2g. The heavy seedlings showed superiority in stem length, stem diameter, leaf area, number of palmate leaf and leaflets and root weight in 2-,3-, and 4-age as compared to light ones. The heavy seedlings also showed superiority in the ratio of inflorescence appearance in 2-age and seed product in 4-age as compared to light ones, but there were no significant difference in the ratio of missing-plant and the cracking. of root. The differences of growth in field condition as affected by seedling weight were diminished as the age progressed, and the annual growth rates of root of light seedling were high in older plant.

• 원예과학기술지
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• 제35권2호
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• pp.265-275
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• 2017

Selection of double-flowered plants at the seedling stage is one of the main purposes of stock breeding programs. Eight stock cultivars of Matthiola incana L. named 'Nobel', 'Cinderella', 'Pacific', 'Avalanche', 'Midblue', 'Lavender', 'Goddess' and 'Esfahan', with different percentage of double-flowered plants were used for examining the relationship with three morphological types of cotyledons. The results of a chi-square test indicated that in heart-shaped (HC) and cup-shaped cotyledon (CC) populations, the number of plants with double flowers was much more than that of single flowers and CC seedlings rarely produced single flowers. Therefore, increasing the number of CC seedlings can improve the percentage of double flowers. The highest and lowest numbers of CC seedling were observed in high double and single flower cultivars, respectively. Single flower cultivars showed the maximum count of dumbbell-shaped cotyledons. Chromosome pairing of these cultivars was evaluated using the squash technique. Aneuploid cells were found in 'Nobel' and 'Goddess' cultivars, which showed the highest percentage of CC seedling. Based on morphological measurements, the highest value of inflorescence size was observed in the seedlings with cup-shaped cotyledons.

• 생명과학회지
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• 제11권6호
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• pp.523-529
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• 2001

겨울철 남부지방에서 2 종류의 방울토마토 재배하우스, 즉 양액 재배농가와 톱밥재배농가에서의 서양뒤영벌의 방화활동을 조사한결과, 개화간격은 양액 재배농가가 톱밥 재배농가보다 길었으나, 개화 후 일벌 방화까지의 시간은 양 액재배농가에서 톱밥재배농가보다 짧았다. 따라서 2 종류의 하우스에서 1개의 꽃이 개화하여 방화되기까지의 수정시간에는 차이가 없었다. 일벌들의 방화활동도 같은 양상을 유지하였으며, 투입된 벌의 방화활동 차이는 발견할 수 있었다.

• Molecules and Cells
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• 제22권1호
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• pp.89-96
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• 2006

"Determinate" and "indeterminate" inflorescences in plants are controlled by a single recessive gene, for example, SELF-PRUNING (SP) in Solanum lycopersicum, TERMINAL FLOWER1 in Arabidopsis, CENTRORADIALIS in Antirrhinum, and CENTRORADIALIS-like gene in tobacco. Pepper (Capsicum annuum L.) is an indeterminate species in which shoots grow indefinitely. In this study, we cloned and characterized the pepper SP-like gene (CaSP). RT-PCR revealed that the CaSP transcript accumulates to higher levels in floral buds than in other organs. Comparison of genomic DNA and cDNA sequences from indeterminate and determinate pepper plants revealed the insertion of a single base in the first exon of CaSP in the determinate pepper plants. CaSP is annotated in linkage group 8 (chromosome 6) of the SNU2 pepper genetic map and showed similar synteny to SP in tomato. Transgenic tobacco plants overexpressing CaSP displayed late-flowering phenotypes similar to the phenotypes caused by overexpression of CaSP orthologs in other plants. Collectively, these results suggest that pepper CaSP is an ortholog of SP in tomato.

• 식물분류학회지
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• 제45권1호
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• pp.8-11
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• 2015

사초과의 하늘지기속 신종인 물하늘지기(Fimbristylis drizae J. Kim & M. Kim)를 전라북도 정읍시 수청저수지에서 발견하여 기재하였다. 물하늘지기는 줄기는 5각형이고 1-2개의 기부 경생엽이 엽신이 없는 엽초만 있으며 화서는 소수화서를 가진 점에서 검정하늘지기(F. diphylloides Makino)와 유사하다. 그러나 물하늘지기는 주두가 2개이고, 소수가 타원형이며, 수술이 1개(드물게 2개)이고, 인편이 황갈색이며 저수지 가장자리에서 자라는 특징을 가지고 있다. 반면에 검정하늘지기는 주두가 2개 또는 3개이고, 소수가 난형이며, 수술이 2개이고, 인편이 흑갈색이며 임도변의 습한 곳에서 자라는 점에서 구별된다.

• 한국식물학회:학술대회논문집
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• 한국식물학회 1996년도 제10회 식물생명공학심포지움 고등식물 발생생물학의 최근 진보
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• pp.10-18
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• 1996

Recently, we have reported a rice MADS-box gene, OsMADS1, as a molecular factor triggering flower formation; this has been well studied in a heterologous system (Chung et al., 1994). In order to study whether the OsMADS1 homolog exists in other plant species, the OsMADS1 cDNA was used as a probe to screen a tobacco cDNA library, and a potential homolog, NtMADS3, was isolated. Sequence analysis revealed that the gene shares 56.1% identity in whole amino acids with OsMADS1. Like OsMADS1, the NtMADS3 gene starts to express at a very early stage of flower development, and the expression continues up to flower maturation. In the tobacco flower, the gene is expressed in whorl 2,3 and 4, corresponding to the petal, stamen, and carpel, respectively. Upon ectopic expression in the homologous system, NtMADS3 caused a trasition from inflorescence shoot meristem into floral meristem, reducing flowering time dramatically. These phenotypes strongly suggest the NtMADS3 gene is the OsMADS1 homolog of tobacco. Hybrids between the OsMADS1 and the NtMADS3 plants were also generated. The hybrids flowered even earlier than these two transgenic plants. The detailed studies are discussed here.

• 식물분류학회지
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• 제33권4호
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• pp.393-409
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• 2003

한국산 골풀아재비속 3종을 대상으로 외부형태학적 형질을 재검토하였다. 줄기와 잎의 단면, 및 수과와 잎의 표피형을 광학현미경과 주사전자현미경(SEM)을 사용하여 비교분석하였다. 줄기, 잎, 잎싸개, 포, 꼬마이삭, 비늘조각, 수과의 길이와 너비, 암술머리의 수, 꼬마이삭, 비늘조각, 수과의 모양 등의 외부형태형질과 줄기와 잎의 횡단모양, 유관속의 수, 수과의 표피 세포의 모양, 잎표피의 규소체의 형태, 기공복합체의 빈도, 부세포의 모양 등의 미세형태형질이 이들 분류군의 유용한 분류형질이었다. 이상의 결과를 토대로 검색표를 작성하였다.

• 식물분류학회지
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• 제41권4호
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• pp.361-364
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• 2011

제주도의 서귀포시 상효동과 제주시 오등동의 계곡 주변에서 발견한 쐐기풀과의 몽울풀속에 속하는 미기록 식물, 푸른몽울풀(Elatostema laetevirens Makino)을 채집하여 기재하였다. 푸른몽울풀은 다년초이고 줄기에 개출모가 없는 점과 화서의 자루가 발달하지 않는 특징으로 국내 몽울풀속의 다른 종들과 쉽게 구분이 된다. 잎 표면에 광택이 없으며, 표면의 색이 청록색인 특징을 고려하여 '푸른몽울풀'로 명명하였다.

• 식물분류학회지
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• 제40권4호
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• pp.208-217
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• 2010

Crossosomatales is a recently recognized order in the rosid II clade with about 64 species in eight morphologically distinct families that have been previously classified in as many as 15 other orders. Phylogenetic relationships among the families and genera within Crossosomatales were investigated using chloroplast atpB, matK, and rbcL sequences employing maximum parsimony, maximum likelihood, and Bayesian methods. The phylogenetic framework was used to examine the patterns of morphological evolution and synapomorphies for subclades within Crossosomatales. The combined data with representative species from all genera in the order strongly supported monophyly of Crossosomatales. Strong support was found for the families in the Southern Hemisphere, in which Aphloiaceae is sister to the clade of (Geissolomataceae, (Ixerbaceae + Strasburgeriaceae)). The sister relationship between the Southern Hemisphere clade and families distributed primarily in the Northern Hemisphere was also supported. As in the previous studies, following relationships were found within the Northern Hemisphere clade: Staphyleaceae is sister to a clade of (Guamatelaceae, (Stachyuraceae + Crossosomataceae)). The pattern analysis indicates that evolutionary pattern of morphological characters is complex, requiring multiple changes within Crossosomatales. Several reproductive traits, such as inflorescence, aril, stigma, and conspicuous protrusion from pollen aperture, corroborate the molecular phylogeny.