밤나무 교잡종 과실의 질적 특성

이욱(Uk Lee),김만조(Mahn-Jo Kim),김선창(Sun-Chang Kim),이문호(Moon-Ho Lee),장용석(Yong-Seok Jang) 한국원예학회 2005 원예과학기술지 Vol.23 No.1

본 연구는 밤나무 교잡종 과실의 조합별 및 개체별 질적특성을 조사함으로써 신품종 육성의 기초 자료뿐만 아니라 품종검정 기준설정의 기초자료로 활용하는데 그 목적이 있다. 과실모양은 11 조합의 많은 개체에서 타원형(85.30%)을 나타냈으며 K×R 등 5조합에서 삼각형(3.78%), R×K 등 8조합에서 원형(5.46%), R×O 등 3조합에서 장타원형(5.46%)으로 각각 관찰되었다. 과피색은 모든 조합에서 암갈색과 적갈색이 각각 49.16%와 38.24%로 관찰되었으며 과피털은 K×R과 R×K만이 과피 전체에서 각각 1개체씩 관찰되었다. 과피털의 밀도는 대부분의 조합에서 92.86%가 중 이상이었으며 좌면의 크기는 E×O, E×R, K×O에서만 중 이상인 것으로 조사되었다. 과실의 광택은 K×O조합에서만 약인 개체가 출현하였으며 열과형태는 모든 조합에서 3가지 형태중 2가지 이상의 형태가 각각 혼재되어 있었다. 양적형질이 우수한 8개체 중 RO-22, RO-25 등 2개체만이 과실모양과 과피색이 각각 장타원형과 암갈색을 나타내었으며 OK-2 제외한 나머지 5개체는 각각 타원형과 적갈색으로 관찰되었다. 과피털의 위치는 OK-2 제외한 모든 개체는 과정부였으며 과피털의 밀도는 IO-15 제외한 모든 개체에서 밀하게 분포하였다. 좌면의 크기는 JO-7과 RO-25 개체가 가장 작았으며 광택은 K×O의 1개체를 제외한 모든 개체에서 중 이상으로 우수하였다. 열과형태는 JO-7과 JO-12, IO-15, OK-15 개체에서 각각 과정부 열과와 주두부 열과 등 각각 단일 형태를 나타낸 반면, OK-2 등 4개체는 과정부 열과와 측면부 열과가 혼재하고 있음을 알 수 있었다. 내피박피성을 조사한 결과, OK-2, OK- 4, OK-15 등 3개체는 내피박피율이 20% 내외로 불량한 반면 RO-25, JO-12 등 2개체의 내피박 피율이 각각 78.6%, 72.4%로 매우 우수한 것으로 나타났다. This study was aimed to applicate as the basic data for the presentation of International Union for the Protection of New Varieties of Plants (UPOV) guideline and for breeding new cultivars through qualitative characteristics of nut in chestnut hybrids. In nut shape, oval type, 85.30%, could be observed in all combinations, and triangle type, 3.78%, in K×R, K×O, E×R, I×R, J×O, and oblong type, 5.46%, in R×O, I×O, E×O, I×R, respectively. Both dark and reddish brown, 49.16% and 38.24%, in nut color were observed in all combinations, and nut pericarp hairs in only K×R, R×K could be observed in whole part. The density of its hair showed above middle rank (92.86%) in most of combinations, and the size of hilum area showed above middle rank in only E×O, K×O and E×R. Ten combinations except K×O showed a good condition in nut luster, and two or three types of three split type could be observed in all combinations, simultaneously. Superior individuals, RO-22 and RO-25, showed oblong and dark brown, but others except OK-2 showed oval and reddish brown in nut shape and nut color, respectively. In position of nut pericarp hair, only OK-2 showed stigma part, but all of superior individuals except IO-15 showed thickness in its density. Only JO-7 and RO-25 were smaller than others in size of hilum area, and JO-7, OK-4, OK-15, RO-22 and RO-25 had nuts with excellent luster. Most of individuals had nuts with two or three types in type of nut split, and JO-7, JO-12, IO-15 and OK-15 showed only single type. In peeling rate, OK-2, OK-4 and OK-15 showed around 20% while RO-25 and JO-12 showed 78.6% and 72.4% being considered as superior individuals for roasted chestnuts.

편도체 기저외측핵의 AP5 투여가 상승된 경악반응의 습득에 미치는 영향

서미숙,조소현,김기석,이만영 한국심리학회 한국심리학회지 생물 및 생리 Vol.5 No.1

본 연구는 고전적 공포조건화에 관여하는 장소로 알려진 편도체의 기저 외측핵에 장기상승작용(Long-Term Potentiation: LTP)의 생성을 차단하는 약물인 MNDA (N-methyl-D-aspartate)길항제 AP5를 미세주입함으로써 시각적 조건자극(CS)을 사용한 경우에, 상승된 경악 반응의 습득이 차단되는지를 보고자 하였다. 동물은 AP5-AP5, AP5-식염수, 식염수-AP5, 식염수-식염수 집단으로 나누어서 CS-US 배쌍직전에 AP5나 식염수를 주입한 후 훈련시켰다고 다시 검사직전에 AP5 혹은 식염수를 주입하였다. AP5-AP5집단과 AP5-식염수집단은 상승된 경악반응을 보이지 않았고, 식염수-AP5, 식염수-식염수 집단은 상승된 경악반응을 보였다. CS-US배쌍 직전에 주입한 AP5는 상승된 경악반응을 차단하였고, 검사직전에 주입한 AP5는 상승된 경악반응을 차단하지 않은 결과는 AP5가 습득을 차단했으되 그 표현에는 영향을 미치지 않았다고 해석된다. 그리고 AP5-AP5, AP5-식염수 집단이 상승률에서 유의미한 차이를 보이지 않았으므로, 상승된 경악반응의 차단이 상태의존적 인출 실패에 기인한 것이 아니고, AP5 자체의 약효때문임을 알 수 있다. It has been known that the amygadala is the neural substrate for conditioned fear as well as unconditioned fear. Among the substructures of amygdala, the basolateral nucleus where CS and US inputs converge and LTP occurs, contains high densities of NMDA receptors and so seems to have a critical role in synaptiplasticity. NMDA antagonist, AP5 prevent induction of Long-term potentiation, but not expression of LTP. LTP is an activity dependent enhancement of synaptic efficacy and is regarded the psysiological mechanisms that might underlie learning and memory. So this experiment was done to investigate what effect AP5 injection to the basolateral amygdala on the acquisition and expression of the fear conditioning, using the fear potentiated Startle paradigm. Animals were allocated to AP5-AP5, AP5-saline, saline-AP5, saline-saline groups. AP5 or saline was injected just before conditioning and testing. The re sult is that AP5-AP5, AP5-saline group didn't show the potentiated startle, comparative to the saline-AP5, saline-saline group, and AP5-AP5 group is not significantly different from AP5-saline. So we conclude that AP5 blocked the acquisition but not expression of conditio-ned fear-potentiated startle and convince that the blocking is not due to state-dependent retrieval failure.

치와와개에서 발생한 부신피질암종

이상설, 강지훈, 정윤경, 조현예, 한태성, 양만표, 장동우, 나기정, 김근형, 안병우 충북대학교 동물의학연구소 2006 Journal of Biomedical and Translational Research Vol.7 No.2

본문참고

Breeding of new walnut cultivar, “Golden-ball”

Youngki Park,Chul-Woo Kim,Sea-Hyun Kim,Mahn-Jo Kim,Jae-Hee Kim 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07

A new cultivar of walnut (Juglans sinensis) was developed through selection from Korea Forest Research Institute. The goals of this research were to evaluate the yielding of walnut and their fruit characteristics of walnut selected from different regions in Korean Wild. Different varieties of walnut grown in Korea, were investigated in what concerns fruit weights, fruit length and their yielding. The walnut belongs to the family Juglandaceae. It is one of the most important nut crops grown in temperate regions. Walnuts, the seeds of J. sinensis are a highly nutritious food. They are also used as a traditional remedy for treating cough, stomach ache and cancer in Asia. The present investigations were undertaken during 2000-2009 in five walnut growing areas. In the present study a wide range of variation was observed in walnut characters from different locations. From these varieties, we have been regularly investigated the fruiting characteristics, which are the average of Fruit Length (FL) and Width (FW), and Weight of Fruit (WF) and Individual Yields (IY), during 10 years to select good quality walnut trees.

A New High-Yielding, Large Nut Chestnut Cultivar, "Daehan" Suitable for Processing

Mahn Jo Kim,Sun Chang Kim,Myoung Soo Hwang,Moon Ho Lee,Uk Lee 한국육종학회 2005 한국육종학회지 Vol.37 No.1

A New Late-ripening Chestnut Cultivar, "Mipung" for Eating Raw and Processing with Large Nut

Mahn Jo Kim,Sun Chang Kim,Uk Lee,Myoung Soo Hwang,Moon Ho Lee 한국육종학회 2007 한국육종학회지 Vol.39 No.1

A new chestnut cultivar, “Mipung” was released from Korean native chestnut trees by chestnut laboratory of the Korea Forest Research Institute (KFRI) in 2006. This cultivar was selected first from a natural population in 1984, and the preliminary, advanced, and regional yield trials for evaluation were carried out from 1985 to 2005. “Mipung” is a late-ripening cultivar, and its optimal ripening date is late September. It has good nut quality for eating raw and processing. Its average nut weight is 27.3 g, much heavier than that of the check cultivar, “Arima”. It had also been identified to have resistance to chestnut blight disease and chestnut gall wasp threatening to chestnut trees. The average yield of 8 year-old “Mipung” was 8.8kg per tree, which was superior to that of “Arima”.

Morphological characteristics of winter-buds of main cultivars in chestnut(Castanea spp.)

( Mahn Jo Kim ),( Uk Lee ),( Moon Ho Lee ),( Sun Chang Kim ),( Myoung Soo Hwang ) 한국임학회 2003 한국임학회 정기학술발표논문집 Vol.2003 No.-

옻나무 漆液 中 옻산성분의 유전변이

Mahn Jo Kim(金萬祚),Jung Oh Hyun(玄正悟) 한국육종학회 1997 한국육종학회지 Vol.29 No.1

This study was conducted to evaluate the genetic variation in urushiol components for lacquer quality breeding of lactree (Rhus verniciflua Stokes). The urushiol samples extracted from bark of 2-year-old trees of nine half-sib families of lactree were analyzed by reversed-phase HPLC. Five urushiol components were respectively separated depending on the number of double bonds in the side-chain. The 3-C₁₅ triene content was approximately 70% of the total urushiol composition indicating the major component of urushiol. Variation within and between families for five urushiol components was observed, and the individual basis and family basis heritabilities for the four urushiol components besides 3-C₁₅ triene were estimated as relatively high. It indicates that lacquer quality was under a significant genetic control. For 3-C₁₅ triene, major component of lactree urushiol, individual and family heritability were estimated 0.16 and 0.36, respectively. This result implies that a combinded selection, simultaneously conducting family selection and individual selection within selected families, appears to be effective for lacquer quality breeding. The composition of four urushiol components besides 3-C₁₅ monoene showed plantational variation, and variations in urushiol composition among individual trees within the same plantation were also observed. The 3-C₁₅ triene content in lacquer sap of Kapchun, Woochun and Chungju plantation besides Chilgok plantation was over 80% of the total urushiol composition, and the 3-C₁₅ triene content of mature tree was higher than that of a 2-year-old tree.

‘Jahong’: A New Indigenous Korean Chestnut Cultivar with Reddish Burrs

Kim, Mahn-Jo,Lee, Uk,Park, Yunmi American Society for Horticultural Science 2014 HortScience Vol.49 No.12

Early Generation Testing by Topworking Using Scionwoods from 1 Year-Old Seedling in Chestnut Breeding Program

Mahn-Jo Kim,Uk Lee,Sun-Chang Kim,Moon-Ho Lee 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-