• Journal of Korean Society of Forest Science
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• v.110 no.3
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• pp.295-307
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• 2021

This study proposed a field-applicable natural regeneration method using natural seeding to afforest a secondary growth forest after felling in Larix kaempferi plantations. In 2016, an experimental site was established usingseed-tree and clear-cutting methods in Gapyeong, Gyeonggi-do, South Korea. Characteristics of seed fructification and inflow in the natural regeneration site were analyzed along with an experimental site in Bonghwa, Gyeongsangbuk-do, which was established in 2014. As a result, the number of seeds per individual tree of V age class L. kaempferi was 690,340 seeds in a good year, with an estimated 13.8 million seeds per ha fruited in natural regeneration sites of L. kaempferi with 25 seed-trees per ha. Seed dispersal began in September and germination rates of seeds dispersed until November were greater than 40%. Reserved seed-tree sites showed the highest amount of seed inflow, followed by the seed-tree site and clear-cut site in descending order. The reserved seed-tree method performed better than other methods for evenly scattering seeds. Therefore, the timing of logging and seedbed generation for natural regeneration of L. kaempferi is estimated to be most effective before September when seeds are purposefully scattered using the reserved seed-tree method as an effective method for uniform seed supply.

• Korean Journal of Breeding Science
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• v.41 no.2
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• pp.154-157
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• 2009

Pear has a gametophytic self-incompatibility (SI) system and its SI reaction is controlled by a single multi-allelic S-locus. 'Wonkyo Na-jasoojung 2' was selected from a cross between 'Wonwhang', early season major pear cultivar with high fruit quality and self-incompatible, and 92-18-79 (${S_4}^{sm}{S_4}^{sm}$) obtained from self cross of 'Osa-nijisseiki' (${S_2S_4}^{sm}$) (SM, stylar-part mutant), self-compatible bud mutant that originated from self-incompatible 'Nijisseiki' ($S_2S_4$) made in 2001 at the National Institute of Horticultural and Herbal Science, Rural Development Administration in Korea. '92-18-79' was selected as a self-compatible source through field investigation. It bloomed 1 day earlier than 'Osa-Nijisseiki' and similar to 'Wonwhang' in 2008. It is medium in tree vigor and spreading in tree habit. 'Wonkyo Na-jasoojung 2' is classified as highly susceptible to pear scab (Venturia nashicola) similar to 'Osa-Nijisseiki' and as resistant to black spot (Alternaria kikuchiana) similar to 'Wonwhang'. It had 65.7% fruiting rate by self pollination. The average optimum harvest time of 'Wonkyo Na-jasoojung 2' was 148 days after full bloom and it matured 2 days earlier than 'Osa-Nijisseiki' and 11 days later than 'Wonwhang'. The fruit is roundish oblate in shape and yellowish brown in skin color. Average fruit weight was 445 g and soluble solids content was 13.3 $^{\circ}Brix$. The flesh had abundant juice and negligible grit.

• Korean Journal of Food Science and Technology
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• v.53 no.1
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• pp.40-45
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• 2021

Prior studies of physiologically active substances in grapes have focused only on the fruit, pericarp, and branches, as well as the pulp and seeds. The present study assessed the changes in quercetin-3-O-glucuronide (Q3OG) and flavonol glycoside content using grape leaves from Vitis labruscana B. and V. coignetiae at different growth stages and provided basic data for quality control. Content analysis showed that both varieties differed in Q3OG and flavonol glycoside content by growth stage, and the components were found to be high in the order of fruit, maturation, and coloration. Also, Vitis labruscana B. has a better vascular relaxation effect than Vitis coignetiae. These results suggest that in the use of grape leaves as a functional raw material, Q3OG and flavonol glycosides can be used as indicator components. In addition, if raw materials for each growth stage are mixed in a particular ratio, it will be a way to manage the specific efficacy and content of indicator components.

• Journal of Life Science
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• v.33 no.12
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• pp.987-994
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• 2023

This study examined the associations between the genotypes of the galactose mutarotase (GALM) gene and carcass traits in the Hanwoo population of Jeju Island, South Korea. The GALM genotypes were determined by the 14-bp (5'-GGTCTAATGACCAG-3') insertion/deletion (InDel) polymorphisms of the 3'-untranslated region (UTR). All three genotypes (LL, LS, and SS) were found in the Hanwoo steer population. The association analysis showed significant associations between genotypes and several carcass traits, including traits related to intramuscular fat content, such as meat quality, marbling score, and backfat thickness (p<0.05). Animals harboring the SS genotype showed not only higher levels of intramuscular fat content but also lower levels of backfat thickness than animals harboring the LL and LS genotypes. On the other hand, no significant associations were found between the GALM genotypes and carcass weight, eye muscle area, meat color, or fat color (p>0.05). Deleting the 14-bp segment in the 3'-UTR resulted in the modification of the secondary structure of RNA and appeared to affect gene expression by interfering with the binding ability of GALM mRNA with RNA-binding proteins and microRNAs. These results suggest that the 14-bp InDel polymorphism in the 3'-UTR region of the GALM gene affects cattle growth traits and carcass quality through galactose metabolism-mediated fat accumulation in muscle and backfat tissues.

• Journal of the Korean Chemical Society
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• v.52 no.5
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• pp.580-582
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• 2008

• Proceedings of the Korean Society of Crop Science Conference
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• 2000.04a
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• pp.270-271
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• 2000

• The Microorganisms and Industry
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• v.16 no.3
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• pp.36-39
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• 1990

해양 생물공학은 잔존하는 기술적인, 산업적인 디딤돌 중에 가장 큰 분야라는 인식하에 선진국에서는 이미 그 생태계 대상을 육지로부터 해양으로 돌려 많은 연구결과가 축적되어 있고 좋은 결실 또한 얻고있다. 따라서 본 총설에서는 1989년 9월 3일 부터 6일 까지 일본에서 개최한 제1회 국제 해양 생물공학학회에서 소개된 연구내용을 중심으로 하여 초근의 동향을 간략하게 기술하고자 한다.

• 월간 기계설비
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• s.139
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• pp.20-24
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• 2002

21세기 표준화된 정보화 주택의 기준이 마련되었다. 1990년대 중반 이후 국토 및 국민생활의 디지털화를 추진해온 국가정책의 한 과제로 개발을 완료하고 일반에 공개된 $\ulcorner$수요대응형 인텔리전트 아파트 표준모델$\lrcorner$로서, 꿈의 디지털 주거문화를 총결산하고 집대성했다는 인텔리전트 아파트 표준모델은 대한주택공사, 삼성물산, 서울통신기술, 한국통신이 컴소시엄을 구성하여 지난 1999년 11월부터 국책과제로 진행, 결실을 맺게 된 것이다.

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2005.04a
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• pp.28-28
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• 2005

• The Korean Publising Journal, Monthly
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• s.241
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• pp.10-10
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• 1998

단절된 민속문화를 찾아 되살려 놓은 데 반세기 삶을 고스란히 바친 심우성씨의 최근 저작에는 평생 민속문화의 '지킴이'가 되고자 했던 그의 신념이 담겨 있다. '심삿갓'이라 불리는 그의 별명대로 우리의 민속이 있는 곳이면 어디라도 달려가던 현장 연구가의 생생한 결실이 한권에 들어 있다.