• 농업기술회보
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• v.51 no.6
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• pp.16-16
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• 2014

2000~2010년 사이에 국내에 출시된 황색과육 참다래 품종들은 품질 면에서는 수입산과 대등한 수준에 이르고 있다. 하지만 꽃의 유전적인 특징으로 한 개의 꽃송이의 중심 꽃 양 측면에 작은 곁꽃이 2~6개 맺히는 특징을 가지고 있다. 때문에 생산농가는 꽃피기 전에 생산성을 떨어뜨리는 이들 작은 꽃봉오리를 제거하는 작업에 많은 시간과 노력을 투여하고 있다. 최근에 육성된 참다래 품종 가운데 생산 노동력을 좀 더 줄일 수 있는 '골드원'에 대해 소개한다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.37 no.1
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• pp.45-53
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• 1992

This studies were conducted to investigate the physiological characteristics of photosynthesis and dry matter accmulation of 2 Tongil type and 2 Japonica type varieties under different temperature and light intensity condition. Photosynthetic activities were lower in Tongil type varieties than Japonica type at low temperature(17$^{\circ}C$), but higher in Tongil type varieties at high temperature in each growth stages. The degradation rate of photosynthesis was higher in Tongil type varieties than Japonica type varieties at low temperature and Tongil type varieties were showed high photosynthetic activities at high temperature ($25^{\circ}C$). Specific Leaf Area in each growth stages were the highest at tillering and increased from panicle formation stage to heading stage. The ratio of respiration to photosynthesis (R /P$\times$200) into upper three leaves were significantly high in third leaf and showed same slope in each varieties. CGR, NAR were higher in Tongil type varieties than Japonica type varieties and yields, havesting index were showed high in Tongil type varieties.

• Journal of Mushroom
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• v.11 no.2
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• pp.82-86
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• 2013

A new variety of Pleurotus eryngii which is named 'Gonji No. 8' was bred by mating monokaryotic strain isolated from E085D2 and a monokaryotic strain 'aerini No.3' obtained from the Mushroom Research Institute, Gyeonggi-Do A.R.E.S. The characteristics of the new variety 'Gonji No.8' is as follows. The optimum temperature for mycelium growth was from $23^{\circ}C$ to $26^{\circ}C$ on potato dextrose agar (PDA) medium. For the primodia formation and the growth of fruit bodies, the optimum temperature was from $14^{\circ}C$ to $16^{\circ}C$. The period of spawn running was around 30 days at $22^{\circ}C$ and the days taken after the removal of the spawn layer to initiate primodia was seven days. The hardness value of fruit body was $8,432{\pm}2,193$ $g/cm^2$, which was two times more than that of 'Keunneutari No.2'. The yield of 'Gonji No.8' was about 133 g per bottle(900cc) and it was same as 'Keunneutari No.2'.

• Journal of Mushroom
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• v.21 no.3
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• pp.154-159
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• 2023

A new spore-less cultivar Lentinula edodes 'Daedam' was bred from monokaryotic strains of 'LE15401-24' and 'LE192118-10'. The optimum temperature for mycelial growth of 'Daedam' on potato dextrose agar was 22~25℃. Total cultivation period of the new cultivar, from inoculation to its first harvest, was 134 days, similar to that of the control cultivar 'Hwadam'. Total yield of 'Daedam' was 222g per 3kg substrate, and was lower than that of control cultivar(266.0g). The fruiting body of 'Daedam' had a thick and small pileus and a longer stem compare to control cultivar. As a result of a analyzing the productivity of 'Daedam' on the different substrate types, the biological efficiency was 26.7% in the 1.2kg cylindrical substrate(CS), which was higher than that of the 3kg rod-type substrate(RS). 'Daedam' had a similar yield compared to 'Hanacham' in first fruiting body production, but the cultivation period was 40 days shorter. Therefore, 'Daedam' can only harvest fruiting bodies once, it is thought that it can be used as spore-less oak mushroom cultivar for short-term cultivation instead of 'Hanacham' in mushroom farms.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.35 no.5
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• pp.424-439
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• 1990

The protein content of seed meal were examined to evaluate genotypes of higher protein content from 164 peanut germplasms. The variations in amino acids content were investigated from nine Korean leading varieties grown at five locations. Amino acids contents of protein fractions were also ana lysed in the present study, too. The results of the study were summarized as fallows. The seed protein of 164 peanut varieties averaged 24.5% ranging from 19.5% to 28.7%, showed 9.2% varietal variation in proteins. Differences were not observed in protein content between plant types, however, protein contents were higher in small-seeded than large seeded varieties. The differences were more greater particulaly in Spanish type varieties. The varieties introduced from Taiwan and Philippine showed higher protein contents, and the cultivars or lines bred in Korea and introduced from Japan were lower in protein contents. protein contents showed non-significantly negative correlations with 100-kernel weight and pod weight per plant, but positive correlations were observed between oil and protein content in all types of peanuts. Significant differences among the varieties and locations were observed for total, essential and non-essential amino acids contents, and aspartic acid. Locational differences for arginine, lysine, methionine, threonine, glutamic acid, glycine and tyrosine, and varietal difference for phenylalanene were revealed as significant. The limiting amino acids from the leading varieties were isoleucine, methionine, threonine, alanine and tyrosine, comparing with FAO recommanding levels of amino acids. Among the protein fractions prolamins was the highest in total amino acids, but essential amino acids was the highest in globulins

• KOREAN JOURNAL OF CROP SCIENCE
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• v.54 no.1
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• pp.88-103
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• 2009

The volatile and semi-volatile compounds of 5 accessions of domestic scented and 25 accessions of introduced scented were extracted by solid phase microextraction (SPME) and analyzed by gas chromatographymass spectrum (GC-MS). A total of 156 volatile and semivolatile compounds were identified from 30 accessions of aromatic rice, including 32 alcohols, 25 acids, 25 ketones, 21 hydrocarbon, 18 esters, 16 aldehydes, 4 ethers, 5 amines, 2 phenols, 2 bases, and 8 miscellaneous compounds. By UPGMA/Neighbor-join tree analysis, the thirty accessions of aromatic rice could be classified into seven groups according to the major odor or aroma compounds. Group I included indica type of Basmati varieties. Group II and Group IV included japonica type introduced scented. Group III consisted only Hyangmibyeo1ho in domestic scented. Group V and Group VII included indica type of Basmati and non-Basmati varities. Group VI included four of domestic scented of seven accessions excepted Basmati6129, Basmati 6311, and Seratus Malam.

• Korean Journal of Food Science and Technology
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• v.45 no.6
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• pp.708-713
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• 2013

The ethanol solvent extracts obtained from the pulp, skin, seeds, leaves, fruit stems, and pruning stems of four Korean new grape varieties ("Dunoori", "Narsha", "Cheongsoo", and "Heukbosek"), as well as "Campbell Early", and "Muscat Bailey A (MBA)" were evaluated for their total phenolic and anthocyanin contents. The concentrations of four phenols of biological interest, catechin, epicatechin, quercetin, and resveratrol in the different parts were quantified by high-performance liquid chromatography-ultraviolet analyses. The skin of "Narsha" and "Heukbosek", the leaves of "Narsha", the fruit stems of "MBA", and the pruning stems of "Campbell Early" and "Heukbosek" had the highest resveratrol content. In particular, the resveratrol in the fruit stems of "MBA" had the highest concentration as compared to the other varieties in the different parts. The seeds of "MBA", and the fruit stems of "MBA" and "Heukbosek" had the highest catechin content. Epicatechin was detected in the seeds, fruit stems, and pruning stems. Quercetin was detected only in the leaves. In summary, the catechin and epicatechin contents were significantly higher than the quercetin and resveratrol contents. The concentrations of the physiologically active components present in the grapes were high in the non-edible parts than in the edible parts; therefore, they could be useful in industrial applications.

• Korean Journal of Medicinal Crop Science
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• v.11 no.2
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• pp.102-108
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• 2003

This experiment was conducted to evaluate the diversity and purity of the Korean ginseng (Panax gjnseng) lines developed by the pure line selection using RAPD markers. Four primer (OPA 19, OPM 11, URP 3 and UBC 98) out of the 48 primer tested produced band which showed within-line polymorphisms at least in one line. Within-line polymorphisms were detected in six lines by OPA 19, in four lines by URP 03, in five lines by OPM 11, and in one line by UBC 98 respectively. Five plants obtained from the commercial cultivar 'Cheonpung' were differentiated using the primers OPA 19 and OPM 11. Five plants obtained from the 'Yeonpung were differentiated using the primer OPM 11. Detection of within-line RAPD polymorphisms might be attributed to the fact that cross pollination appear in P. gjnseng and a long period of three to four years required to reach the reproductive stage thereby delay the process to homozygosity.

• Horticultural Science & Technology
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• v.31 no.4
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• pp.457-466
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• 2013

Since the early 1980s, the National Institute of Horticultural & Herbal Sciences has been breeding and collecting diverse radish breeds to select those samples with better horticultural characteristics, to ultimately expand and develop as good radish produce. Genetic diversity is a crucial factor in crop improvement and therefore it is very important to obtain various variations through sample collection. The collected samples were compared with one another in order to assess the level of diversity among the collections, and this procedure allowed for increased application of the gathered resources and aided in determining the direction to secure further samples. Towards this end, this experiment was conducted in order to examine whether the SSR markers derived from Chinese cabbage samples could be transferred to the radish samples. Among the radish breeding lines and introduced resources, 44 lines were used as materials to analyze the genotype using 22 SSR markers selected. As a result, the analysis showed that among all the selected markers, 'cnu_m139' and 'cnu_m289' were the most useful markers for diversity evaluation. The genetic relationship of the radish genetic resources showed that the geographic origins affected the diversity. Furthermore, the different types of radish groups were also determined by the year they were bred. This result demonstrated that there are differences between the older radish breeds and the more recently developed radish breeds. Even though a relatively small number of markers were used in the analysis, it was possible to distinguish whether the radish was bred 30 years ago or in the 2000s, and that the similar physical shapes comprised a particular group, showed that the SSR markers can indeed be successfully applied to to study the diversity within radish breeding lines. Through the results of this study, it can be concluded that the SSR marker developed for the Chinese cabbage can be applied to examine the genetic diversity and analyze the relationship (genetic resource determination) of radish.

• Journal of Life Science
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• v.32 no.9
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• pp.698-705
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• 2022

Rice consumption in Korea is continuously decreasing; therefore, methods for reducing rice stocks are now being proposed. Increasing the consumption of rice and reduce these stocks will require that the rice processing industry be developed beyond simply using cooked rice as food. The Korean people's eating habits have also diversified recently, and the consumption of bread is increasing. Therefore, breeding a cultivar for rice flour is now necessary. Here, a line suitable for processing into rice flour was cultivated by deriving a mutant line by tissue culture of Ilpum. Mutant populations were investigated for major agricultural traits in the field, and grain characteristics and endosperm characteristics were investigated after harvest. Among the lines, line 29111 had similar agricultural characteristics to the background Ilpum, and excellent grain quality, and was selected for further analysis. The physicochemical properties that determine taste were similar or improved. However, unlike Ilpum, 29111 had a non-uniform starch structure and a characteristic powdery endosperm because large and male starch grains are evenly distributed. Therefore, 29111 was viewed as a breeding line suitable for processing and for excellent agricultural characteristics and taste. The added value can be increased by diversifying the uses of rice. The taste was improved and a method for breeding cultivars with grain characteristics for glutinous rice that would satisfy both producers and consumers was presented.