• Proceedings of the Botanical Society of Korea Conference
• /
• 1985.08b
• /
• pp.73-81
• /
• 1985

We have previously isolated OsMADS4 gene that is a member of the class B MADS box genes from rice. In this study, another member of the class B MADS box genes was isolated from rice flower by the yeast two-hybrid screening method using OsMADS4 as bait. RNA blot analyses revealed that the clone, OsMADS16, was expressed in the second and third whorls, whereas the OsMADS4 transcripts were present in the second, third, and fourth whorls. These expression patterns of the OsMADS16 and OsMADS4 genes are very similar with those of AP3 and PI, the class B genes of Arabidopsis, respectively. In the yeast two-hybrid system, OsMADS4 interacted only with OsMADS16 among several rice MADS genes investigated, suggesting that OsMADS4 and OsMADS16 function as a heterodimer in specifying sepal and petal identities. We have also isolated OsMADS6 gene using OsMADS1 as a probe. Both are members of the AGL2 MADS family. Various MADS genes that encode for protein-protein interaction partners of the OsMADS6 protein were isolated by the yeast two-hybrid screening method. A majority of these genes belong to the AGL2 family. Sequence Homology, expression pattern, and ectopic expression phenotypes indicated that one of the interaction partners, OsMADS14, appears to be homologous to API, the class A MADS gene of Arabidopsis.

• Journal of the Korean Chemical Society
• /
• v.34 no.6
• /
• pp.622-628
• /
• 1990

The bio-sensor for glutamine has been constructed by immobilizing petal of the rose structural elements on an ammonia gas sensor. This sensor was investigated for the effects of pH, temperature, buffer solution, tissular amounts, interferences and lifetime. As a result, the tissue sensor showed linear range of $8.0 {\times} 10^{-4}$ ∼$5.0 {\times} 10^{-2}$ M glutamine with a slope of 52 mV/decade in pH 7.8, 0.2M phosphate beffer solution at 37$^{\circ}C$. The tissular amounts used for this sensor was 50 mg. This sensorr showed excellent selectivity. This sensor was compared with other structural elements of rose. Actually, this tissue sensor appeared to be very useful for the determination of glutamine.

• Journal of the Korean Society of Costume
• /
• v.60 no.4
• /
• pp.58-75
• /
• 2010

The purpose of this study is to investigate the characteristics of fur and leather clothes of minority races of China in Northeas and Inner Mongolia. To examine their characteristics, the clothes and ornaments were classified into four types: headwear, clothes, footwear, and accessories. First, headwear was divided into animal head-shaped, petal-shaped, round-shaped, and cone-shaped head wear. Among them, the animal head-shaped headwear was made by making the best use of the shape of animal's head and it was used as the best disguising method when hunting. Second, clothes were composed of upper garments and lower garments. For the upper garments, Po and Jeogori were worn and pants were worn for the lower garments. The clothes were decorated with lining, applique, or top-stitching on the outer collar, neck circumference, and the edge of sleeves and pants. Third, for the footwear, high boots of leather were developed to meet the needs for a convenient life in the plains. In some areas, fur shoes and leather shoes were also used. Finally, accessories included bags and gloves. Bags were usually decorated with fur on the outside or with a fringe or applique of tanned leather. Gloves were lavishly decorated with embroideries and partly with fur or leather.

• Journal of the Korean Society of Propulsion Engineers
• /
• v.5 no.4
• /
• pp.50-56
• /
• 2001

The present study is an experimental work of the soni $c^ersonic air ejector-diffuser system. The pressure-time dependence in the secondary chamber of this ejector system is measured to investigate the steady operation of the ejector system. Six different primary nozzles of two sonic nozzles, two supersonic nozzles, petal nozzle, and lobed nozzle are employed to drive the ejector system at the conditions of different operating pressure ratios. Static pressures on the ejector-diffuser walls are to analyze the complicated flows occurring inside the system. The volume of the secondary chamber is changed to investigate the effect on the steady operation. the results obtained show that the volume of the secondary chamber does not affect the steady operation of the ejector-diffuser system but the time-dependent pressure in the secondary chamber is a strong function of the volume of the secondary chamber.er.

• Plant Resources
• /
• v.8 no.3
• /
• pp.244-249
• /
• 2005

The growth charateristics and karyotypes of Aster spathulifolius collected from 5 sites including coastal and island region on the Korean peninsula, were analysed. Several morphological characteristics of the plants such as leaf length, leaf width, top internode, medium internode, spike branching, flower diameter, number of petal, leaf color, leaf form, stem and leaf hair, viscosity, and serration of the plants were distinctly different depending on the native region from which they were collected. Karyotypic analysis showed that the chromosome number was all diploid (2n=18), with one pair of submetacentric satellite chromosomes. The chromosome composition included 7 pairs of metacentric chromosomes and 2 pairs of submetacentric chromosomes in all plants. However, chromosome order and the ranges of the chromosome lengths were a little different from plant to plant according to their native growing regions. The plants from Geoje-Do especially showed large differences in the chromosome lengths between the longest and the shortest compared to the plants from other places. This results provide important data to support the classification of the species into several sub-species.

• Journal of Plant Biotechnology
• /
• v.37 no.4
• /
• pp.414-424
• /
• 2010

This report describes recent advances in tissue culture, genetic transformation of commercial rose (Rosa hybrida) and in development of new rose cultivars by molecular breeding. Rose is one of major cut-flowers in global horticulture industry. Successful progresses were made in development of new cultivars for pathogen resistant, environmental stress resistant and petal color modification by molecular breeding. New cultivars, however, has not reported yet in korea, although lots of progresses were achieved in each field of conventional breeding, tissue culture and genetic transformation. Cooperation in these research fields will promote screening of useful genes to have specific traits on rose and exploiting of processes to improve in the efficiency of tissue culture and genetic transformation of rose, therefore, we hopefully expect that new rose cultivars by molecular breeding will be released in the near future.

• FLOWER RESEARCH JOURNAL
• /
• v.17 no.3
• /
• pp.205-207
• /
• 2009

A new cultivar of Phalaenopsis 'Jaha' was developed at Cactus Research Institute, Gyeonggido A.R.E.S in 2006. A crossing between 'KYP74', a pink flower with red lip and 'KYP88', light pink colored flower in 1999 was obtained 264 seedlings. 'Jaha' was finally selected through the test of characteristics from 2002 to 2006. This cultivar has purple color flower with red purple lip, large flower, 11.0 flowers per plant, and 81.0 of inflorescence length. This new cultivar was registered for commercialization in 2006 and would be cultured under greenhouse condition in Korea.

• Acta Via Serica
• /
• v.7 no.2
• /
• pp.39-64
• /
• 2022

Ancient Iranians highly esteemed the horse and horse tacks, one of which is the jul (saddlecloth). It is a felt, sheepskin, or woven pad placed between the horse's back and saddle. The aim of this paper is to identify and categorize jul designs in the Sāsānian period. The research questions are about the variety of jul designs and how to categorize them. This is fundamental research and the method is descriptive and analytical. Neither a jul nor a saddle-cover remains from the Sāsānian period, therefore the statistical population includes all available items, such as metal and stone items and parget and plasterworks, in which juls are recognizable. Due to the scarcity of such items, all the available samples were studied; so the sampling method is a total enumeration. This is documentary research by means of note-taking and using reliable websites; the data has been analyzed qualitatively. The results show that jul designs were not diverse in the Sāsānian period. All-over designs were dominant. In terms of pattern types, these designs are classified into five groups, each of which has its own formal and aesthetic characteristics: all-over design with a four-petal flower pattern, allover design with a checkered pattern, all-over design with a spotted pattern, allover design with a tiger stripe pattern, and all-over design with a zigzag pattern.

• Acta Via Serica
• /
• v.7 no.2
• /
• pp.1-38
• /
• 2022

Many knotted carpets from western China and Central Asia from 700 BCE to 700 CE demonstrate strong resemblances to the Assyrian-Persian stone reliefs and Hellenistic-Romanmosaics. Egypt reveals the earliest samples in plain linen fiber and carpets with colorful designs in the mural paintings. The Egyptian wall decoration in faience shows the motifs of waterlily in two variations in the design, both of which appear in the Assyrian floor thresholds designs. The same waterlily or four-petal design in the Egyptian and Assyrian stonework also appear in the Pazyryk knotted carpet in the same manner. The Assyrian thresholds show a composition with a central area and borders in a square or rectangular overall design, which again parallels the Pazyryk carpet. The ideas of composition and motifs commonly seen in the Hellenistic and Roman mosaics appear in the carpets of Central Asia and western China. The similarities between the stone mosaic works and carpets demonstrate clearly that the remote places and peoples in ancient times learned from, and exchanged with, each other the ideas and artistic styles, and integrated to create some local artistic traditions, thanks to the roles the easy-to-carry textiles played throughout the Silk Road. The carpets played their roles: as practical material for daily use, and as carrier of cultural information through their designs.

• Korean Journal of Plant Taxonomy
• /
• v.52 no.4
• /
• pp.207-213
• /
• 2022

An effective pollinator was investigated based on visiting insects to confirm the pollination mechanism of Impatiens furcillata Hemsl. (cheo-jin-mul-bong-seon), an annual herb that is also a species endemic to Korea that has hardly been studied in relation to pollination ecology. The insects that visited the group of I. furcillata studied here consisted of four orders, 11 families, and 16 species; Hymenoptera had seven species (43.8%), Lepidoptera had four (25.0%), Diptera four (25.0%), and Hemiptera one (6.2%). Visiting insects were divided into those that took only nectar, those that took nectar and pollen, and those that took neither. Insects that are effective for pollination are judged considering the length and body type of their mouth parts, and Amegilla florea Smith (huin-jul-beol) is judged to be the most effective pollinator in the survey area. As a result of observing pollination behavior, when visiting a flower, A. florea, which extended its glossa, approached the front, landed on a wing petal of I. furcillata, crawled into the flower tube, and then backed up and reversed its steps, with pollen adhered to its back. The findings here present basic information about species biology related to both I. furcillata and A. florea.