• 한국육종학회지
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• 제40권4호
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• pp.361-370
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• 2008

In order to better understand the morphological differentiation of the two cultivated types of Perilla crop and their weedy types in Korea and Japan, we studied the variation of 62 accessions by examining 15 morphological characteristics. By using ANOVA (one-way analysis of variance), we determined that var. frutescens and var. crispa showed significant morphological differences in terms of plant height and seed weight. Furthermore, cultivated var. frutescens and var. crispa could also be clearly discriminated from one another using PCA (principal component analysis). Specifically, quantitative and qualitative characteristics such as plant height, seed weight, degree of pubescence, shape of leaf, color of leaf, fragrance of plant, color of flower, color of stem and seed size greatly contributed to differences seen in the positive and negative direction on the first axis. In our study, most accessions of cultivated var. frutescens and those of its weedy type could be clearly discriminated from one another, however, most accessions of cultivated and weedy types of var. crispa were not clearly discriminated by the ANOVA and PCA analyses. These results indicated that cultivated var. frutescens can be considered to be a domesticated form, while the cultivated var. crispa can not be considered to be a domesticated form in Korea and Japan. It is our belief that our results concerning the morphological variations among cultivated types of Perilla crop and their weedy types in Korea and Japan will help ensure the long-term success of breeding programs and maximize the use of the germplasm resources in Korea.

• Parasites, Hosts and Diseases
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• 제29권3호
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• pp.217-226
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• 1991

섬진강 유역(경남 하동군)산 황어(Tribelodon taczanowskii)로부터 Metagonimus속 피낭유충을 다수 검출하고 실험적으로 흰쥐와 햄스터에 감염시킨 후 소장으로부터 성충을 얻어 관찰한 바 Saito(1984)의 분류에 따라 Metagonimus Yokogawa형 (M. yokogawai), Miyata형 및 Koga형 등 3가지로 나눌 수 있었다. 실험감염 결과, 흰쥐 4마리 및 햄스터 4마리로부터 Metagonimus 충체 총 1,624마리를 회수하였고 그 중 Yokogawa형은 820마리, Miynta형은 688마리, Koga형은 46마리이었다. 나머지 충체 70마리는 유형을 결정하기 어려웠다. Yokgawa형과 Miyata형의 주요 감별정은 두 고환의 위치, 자궁관의 분포 및 충란의 크기 등이었고, Miyata형과 Koga형의 감별점은 두 고환의 위치, 난환선의 분포, 충란의 크기 등이었다. 이들 유형 특히 Miyata 형의 별종 가능성에 대해서는 많은 증거가 얻어질 때까지 이를 유보해야 할 것으로 생각되고, Koga형은 중간숙주의 차이 이외에는 형태학적으로 Takahashi형 (M. takahashii)과 전혀 차이가 인정되지 않으므로 이와 동일한 것으로 취급하는 것이 옳을 것으로 판단되었다. 이상의 결과로 섬진강산 황어에는 3가지 유형의 Metagonimus가 피낭하고 있음을 확인하였다.

• 천문학논총
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• 제30권2호
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• pp.525-527
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• 2015

We prepare a catalog of the morphological types of 5840 galaxies within z = 0.01. We determine the morphological types by visual inspection using color images from the Sloan Digital Sky Survey (SDSS) DR7. The majority of the sample galaxies are SDSS spectroscopic target galaxies, but we add ~ 900 galaxies whose redshifts are available in the NASA Extra Galactic Database (NED). The fraction of elliptical and lenticular galaxies is ~ 0.06 while spiral galaxies comprise ~ 30% of the sample with a bar fraction of ~ 0.6. About half of sample are dwarf galaxies of which ~ 35% are dwarf elliptical-like galaxies. There is a strong correlation between the morphological types and luminosities of the galaxies, i.e., high luminosities in the early type galaxies and low luminosity in the late type galaxies. The mean luminosity of dwarf elliptical-like galaxies is similar to that of irregular galaxies.

• 한국언어정보학회지:언어와정보
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• 제13권2호
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• pp.59-97
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• 2009

The type of a given sentence indicates the speaker's attitude towards the listener and is usually determined by its final endings and punctuation marks. However, some 6na1 endings are used in several types of sentences, which means that we cannot identify the sentential type by considering only the final endings and punctuation marks. In this paper, we propose methods of finding some other linguistic clues for indentifying the sentential type with a morphological analysis. We also propose to use these methods to implement a system that automatically classifies sentences in Korean according to their sentential types.

• Journal of Forest and Environmental Science
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• 제26권2호
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• pp.75-82
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• 2010

The biometry, morphological properties and chemical composition of bagasse, corn, sunflower, rice, and rapeseed residues plants were analyzed. The results revealed differences in biometry properties and chemical composition of the different types of agricultural resides investigated. The greatest proportion of fiber length (1.32 mm) and cellulose (55.56%) was found in residues of bagasse plants, with a low ash (1.78%) and lignin (20.5%). The lignin of all types of agricultural resides was less than hardwood and softwood. In addition, the rice and rapeseed residues plants had highest amount of ash and extractive component. The slenderness and flexibility ratios of the all types of agricultural resides fibers were similar to some of hardwood and softwood species.

• 한국언어정보학회지:언어와정보
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• 제15권1호
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• pp.1-12
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• 2011

This study investigates morphologically complex nouns in Korean through a series of priming studies. Two experiments examined whether morphological affixes on Korean nouns were decomposed or processed as a whole. Two types of morphological affixes were examined: morpho-syntactic case markers and the plural marker '-tul'. Results showed that priming occurred for the plural marker with SOAs of 80 ms and 160 ms, but no priming occurred for the morpho-syntactic case markers. These results suggest that the morphological processing for these two types of affixes differ. We argue that Korean nouns with the plural suffix are decomposed into the stem and affix, supporting the Decomposition Model (Pinker & Ullman, 2002). We suggest that while plural markers are truly morphological affixes, case markers in Korean are morpho-syntactic, and thus presuppose the existence of other syntactic elements, such as the matrix verb, hence the lack of priming effects.

• 한국작물학회지
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• 제58권4호
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• pp.408-415
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• 2013

본 연구는 동아시아 및 동남아시아에서 수집한 들깨, 차조기 그리고 이들 잡초형 계통들에 대하여 10개의 양적 및 질적 형질들을 이용하여 형태적 변이성을 조사하였다. 그 결과 분석에 이용된 형질들 중에서 종자크기와 종자경도는 재배형 들깨와 재배형 차조기 그리고 들깨의 재배형과 잡초형 계통들을 식별하는 유용한 형질로 밝혀졌으며, 반면에 재배형 및 잡초형 차조기의 계통들은 조사한 대부분의 형질들에서 뚜렷한 차이를 나타내지 않았다. 주성분분석 결과에서 분석에 이용된 10개의 형질들 중에서 꽃색(QL6), 엽표면색(QL3), 종자크기(QN2), 종자경도(QL1), 종자색(QL2), 줄기색(QL7), 엽이면색(QL4) 등은 1축 위에서 음의 방향에 기여하였고, 개화일수(QN1)와 잎모양(QL5), 모용빈도(QL8) 등은 1축 위에서 양의 방향에 기여하였다. 특히, 이들 형질들 중에서 꽃색(QL6), 엽표면색(QL3), 종자크기(QN2), 종자경도(QL1) 그리고 모용빈도(QL8) 등은 들깨 재배형와 차조기의 재배형 그리고 들깨의 재배형 및 잡초형 계통들을 식별하는데 유용한 형질들이었다. 그러나 차조기의 재배형 및 잡초형 계통들은 대부분의 형질들에서 명확하게 구분되지가 않았다. 아직까지 동아시아 및 동남아시아에서 들깨와 차조기의 야생종은 알려져 있지는 않지만, 들깨와 차조기 작물의 잡초형 계통들은 재배형 들깨와 재배형 차조기 작물의 기원을 이해하는데 분류학적으로 중요한 위치에 있는 것으로 생각된다.

• Journal of Plant Biology
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• 제14권3호
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• pp.29-35
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• 1971

Various types of short culm rice mutants were obtained by means of gamma-ray irradiation. In the present paper morphological observation and analysis of silicate content of the mutants are reported. 1. Short culm type had more useful characters than bushy and dwarf types. 2. In short culm and bushy types the number of nodes both above and under ground was similar to the mother varieties, while in dwarf type it decreased. 3. In short culm types the variation of length of above-ground culm and internodes tended to vary relattive to the mother varieties. 4. Positive correlation was found between culm length and the first and fourth internode length in short culm type. 5. Silicate content increased in short culm type-the increment being variety specific.

• Journal of Plant Biology
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• 제28권4호
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• pp.305-315
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• 1985

Morphological variations within the species of Scenedesmus in Korea, S. armatus and 2 strains of S. quadricauda were investigated. Taxonomic characters such as length of long spine, ridge, unicell-colony transformation, and colony types were compared. The length of long spine was constant, whereas the distribution of the spine varied with the age of culture. Ridge and short spine in S. armatus occurred constantly, whereas those in S. quadricauda varied with the composition of the media and age of culture. Strains CY-1 and CY-2 showed 6 different colony types in the stationary culture, whereas S. armatus formed only two types, armatus and armatus-longus types. All strains showed unicell-colony transformation. The cell became minimum when the daughter cell was released, and reached maximum at division.

• 한국패류학회지
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• 제23권2호
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• pp.155-164
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• 2007

A new species, Arca koumaci Lutaenko et Maestrati n. sp. (Bivalvia: Arcidae), is described from New Caledonia. The species is characterized by the small size, the convex shell with a strong posterior umbonal ridge covered by spikes, the widely curved ventral margin, and presence of cancellate sculpture and convergent marginal teeth. Presence of spikes on the posterior ridge is a unique morphological feature recorded for the first time in the genus. It is proposed that the only subgenus, namely Pliocene A. (Arcoptera) Heilprin, 1887, apart from nominative, can be recognized in the genus. Three morphological types are distinguished within the genus based on shell shape and sculpture. Bathymetric analysis shows that representatives of Arca inhabit water depths down to 175 m, and more than half of Recent species were found below 50 m. Types of A. bouvieri P. Fischer, 1874, Arca boucardi Jousseaume, 1894, Arca avellana Lamarck, 1819, and Arca retusa Lamarck, 1819 are illustrated.