Drought is one of the key limiting factors that adversely affects the growth and productivity of crop plants. For the enhancement of drought tolerance in crop plants, the identification of basic mechanisms of a plant to drought stress is necessary. In this study, we compared physiological and biochemical responses of five local Arundenilla hirta ecotypes to drought stress. These ecotypes were previously collected from various parts of Korean peninsula, including Youngduk, Gunsan, Jangsoo, Jinju-1 and Yecheon. A. hirta plants were exposed to drought stress for 14 and 17 days respectively, followed by re-watering for 3 days. The results showed that the lipid peroxidation (MDA), hydrogen peroxide (H2O2), DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity, and proline level were significantly increased while the chlorophyll content was decreased by drought stress in A. hirta leaves. The highest proline content and DPPH scavenging activity were shown in Ecotype of Youngduk with least MDA and H2O2 levels while the highest MDA and H2O2 contents, and least proline and DPPH levels were shown in Gunsan, respectvely. These results indicate that the Youngduk is the most tolerant and Gunsan is the most sensitive ecotype among the five different collections. Together, these results provide a new insight of overall physiological responses of A. hirta to drought stress.

This study was conducted to evaluate on agronomic characteristics, forage quality and dry matter (DM) yields of mugwort (Artemisia princeps Pamp.) collected different region at Seongju in Kyeongbuk from 2014 to 2015. The experiment was arranged in randomized complete block design with three replications. Mugwort was planted on 17th March, 2014 and harvested on 13th September, 2014 and on 25th May and 9th September, 2015. DM yields of Dalsung(1), Seongju B.(1), Dalsung(2) and Sajuarissuk were 17.3, 16.8, 16.7 and 16.7(MT ha⁻¹), respectively and the DM yields of those were higher (P<0.05) than the other mugworts in 2014. In 2015, DM yields of Dalsung(1), Dalsung(2), Seongju B.(1), and Sajuarissuk were 19.5, 19.3, 18.4 and 18.4(MT ha⁻¹), respectively and DM yields of those were higher (P<0.05) than the others. DDM(digestable dry matter) content of mugworts was a range of 56.4 to 60.8% and that of Sajabalssuk, 60.8% was the highest. Seongju B.(1) 58.8% was higher than Seongju B.(2) 56.4% but there were no difference among the Dalsung(1) 58.4%, Dalsung(2) 58.1%, Sajuarissuk 57.7% and Yeongcheon. The result of this study indicated that Dalsung(1), Dalsung(2), Sajuarissuk and Seongju B.(1) would be recommendable for forage production.

Adenophora triphylla var. japonica HARA is a herbaceous plant belongs to Campanulaceae. Adenophora root is mainly used for medicinal purpose. It is effective for lung cleaning, sputum remove, viscera strengthening, cough stopping and cancer treatments. Adenophora has about 70 species in the world and 17 of the species are distributed in Korea. Genetic resources of A. triphylla var. japonica HARA are valuable as the habitat is concentrated in East Asia. The intraspecies variation is very high according to the environmental conditions. A new A. triphylla var. japonica HARA variety, ‘Harang’, was developed through polyploid breeding in 2011. But, low domestic production and passive studies caused our country to rely on imports for almost all amount of the A. triphylla var. japonica HARA demands. In this experiment, genetic diversity between the collections were analyzed using 32 RAPD primers. Through this study, limit of morphologic classification could be solved and genetic diversity of this plant could be assured.

Physical and structural characteristics of four local barnyardgrass flour and starch were investigated. Amylose content ranged from 6.9 to 12.5%. The BP 3563 and BP 3606 were low amylose lines, and the BP 3592 and BP 3610 showed very low amylose lines. Peak viscosities of four barnyardgrass collections BP-3563, BP-3592, BP-3606, and BP-3610 ranged 264 to 2397. All barnyard grass lines displayed an A-type X-ray diffraction pattern showing the strong diffraction peak at around 2~theta values 15~circ , 17~circ , 18~circ and 23~circ , and a small peak at 20~circ 2~theta . Scanning electron microscopy revealed that the starch granule sizes ranged 5.5-12.5~mum in diameter showing polygonal and rarely spherical in shape with round edges and some pores at the surface. Starch crystallinity of BP 3563, BP 3592, BP 3606, and BP 3610 was 23.9, 25.0, 24.7, and 25.5%, respectively.

본 연구에서는 청색색소 카마줄렌을 함유한 쑥 종류를 선발하고, 이 카마줄렌 함량이 집단 내에서 개체에 따라 달라지는 지를 알아보고자 조사 분석한 결과를 요약하면 다음과 같다. 1. 국내 수집종 쑥 5종 쑥(Artemisia indica), 물쑥(Artemisia selegensis), 실제비쑥 (Artemisia japonica var. angustissima), 뺑쑥(Artemisia feddel), 황해쑥(Artemisia argyi)의 정유성분을 분석한 결과 카마줄렌을 함유하고 있는 종은 Artemisia indica이었다. 2. 식물체 내에서 영양생장기와 생식생장기 모두 잎이 화기와 줄기보다 카마줄렌을 많이 함유하고 있었다. 영양생장기에는 상위 엽이 중, 하위 엽보다 2.5배 정도 많은 카마줄렌을, 생식생장기에는 상위 줄기가 중, 하위 줄기보다 5-8배 정도 많이 카마줄렌을 함유하였다. 3. 집단 내 50개체의 개체별 카마줄렌 함량의 변이를 조사한 결과 최소 0.015% 에서 최대 0.113%까지의 큰 변이를 보였으며, 전체 개체의 72%인 36 개체가 0.03% 이상의 카마줄렌을 함유한 것으로 나타났다. 4. 모본과 후대(clones)의 카마줄렌 함량을 비교한 결과 차이가 없었다.

Characteristics of seed and plant growth of the nine local collections of the medicinal plant, Agastache rugosa were evaluated. Seed size of the collection from Garyungsan was larger than the others. Seeds of Damyang collection were the smallest in size. Seeds of the collections were mostly oval shaped. There were no differences between brown and black seed coat color groups in seed width, ratio of seed length to seed width and 1,000 seed weight. Stem lengths of Garyungsan and Bongpyung collections were 99.9 and 95.6 cm, respectively, and were longer than Damyang and Jindo collections. Garyungsan collection had long leaf shape. Leaf size was the smallest for Damyang collection, but was the largest for Bongpyung collection. Inflorescence length of Mokpo collection (15.6 cm) was longer than the average over all collections (12.3 cm). Damyang collection was the shortest (10.1 cm) in inflorescence. Top dry weight of each collection from Soonchun, Bongpyung, Mokpo, Jindo, and Gurye was greater than the average over all collections (20.38 g/plant). Jinju and Damyang collections had less top dry matter than others. There was no difference in the growth traits examined between brown and black seed coat groups. The brown seed group was greater in leaf weight than the black seed group. However, these two groups were not different in stem and inflorescence weight. Collections of A. rugosa from Bongpyung, Soonchun, and Mokpo were promising for commercial cultivation because of their great top dry weight, especially in leaf and inflorescence.

용도의 다양화로 수요가 증가하고 있는 검정콩의 우량 품종육성을 위한 유전자원으로 활용코자 수집 선발한 재래검정콩 28계통의 종실크기에 따른 형태, 수분흡수성 및 알칼리 붕괴도의 특성을 조사하였던 바 그 주요 결과를 요약하면 다음과 같다. 1. 종실의 크기별 수분흡수는 5, 20℃ 의 낮은 온도에서는 소립종에서 낮았고 40, 60℃ 의 높은 온도에서는 소립, 중립, 대립종간 차이가 없었다. 2. 검정콩의 수분흡수는 종실 크기에 따른 차이는 없었으며, 침지온도 20℃ 이하에서는 10시간 이후에, 40℃ 에서는 10시간, 60℃ 에서는 4시간 정도에서 평형상태에 도달하였다. 3. 100립중은 종실의 길이, 폭, 두께와는 각각 고도의 유의한 정의 상관을 나타내었으며, 그 중 종실폭과 상관이 가장 높았다. 4. 알칼리 붕괴도는 입중이 무거울수록 높았으며, 100립중, 종실길이, 종실폭, 종실두께, 종실배꼽 길이와는 각각 고도의 유의한 정의 상관을 나타내었다. 5. 알칼리 붕괴도는 녹색 자염계통이 황색 자엽계통보다 높았다.

Followings are resulted through the analysis of the maln characters and the leaf ingredients, which is on the purpose of getting the basic materials to improve jaso and increase its production.Of the introduced varieties, Jukyeubjaso-stem length is 180cm, ear length is 37cm, No. of branches ofstem is 27, leaf length Is 16cm, leaf width Is 15cm-has better character than any other. Gurye local-stem length is 179cm, ear length is 38cm-is taken to be the best in the Geo-ecotypic.In the yield of leaf and seed, JukyeubJaso Is 727kg/10a, the greatest of all. In the leaf softness, allthe Inirorluced varieties are about 3.5 degrees, the Geo-ecotypic, about 2. The qualify of the introducedvat'ieties is better· than that of the Geo-ecotypic. Estimating on the chemical analysis of leaf,Jukyeubjaso has Protein 21.84%, Total carbohydrate 7.91%, Fe 126ppm, and Gurye lacal has Protein21.7 a, Total carbohydrate 8.4%, Fe 148ppm, expressing the highest. In correlation coefficients of leafchemical components, between protein and Total carbohydrate, Protein and Mn, protein and Fe, Pro-tein and Cu all the sorts show the positive correlation. Among them the Geo-ccoyplcs show the hlghestsignificance.

본연구(本硏究)는 쑥의 周年生産(주년생산)과 쑥의 용도별(用途別) 적품종(適品種)을 선발육성(選拔育成)하기 위(爲해) 전국(全國)에서 수집(蒐集)된 28종(種)에 대(對)하여 지상부(地上部)의 생육특성(生育特性)과 잎에 대(對)한 무기(無機) 및 유기성분(有機成分)을 分析(분석)한 바 얻어진 주요결과(主要結果)는 다음과 같다. 1. 북부수집종(北部蒐集種)은 경장(莖長), 경태(莖太), 분지수(分枝數), 절간수(節桿數), 잎의크기, 잎의 모용(毛茸)가 모두 커 중부(中部)와 남부수집종(南部蒐集種)보다 지상부(地上部)의 생육(生育)이 왕성(旺盛)하였다. 2. 생체중(生體重)은 명주산 덤블쑥이 가장 무거웠으며, 지역별(地域別)로는 전북이리 수집종(蒐集種)과 경북의성 수집종(蒐集種)이 가장 많았으며, 이들 수집종(蒐集種)에 대(對)한 특성(特性)은 잎수(數)와 절간수(節桿數)가 많고 잎의 모용(毛茸)가 길었다. 3. 잎의 무기성분(無機成分)은 북부수집종(北部蒐集種)은 N, MgO, Zn, Cu, Mn 함량(含量)이 많았던 반면(反面), 중부수집종(中部蒐集種)은 P2O5과 K2O 함량(含量)이 또한 남부수집종(南部蒐集種)은 Fe 함량(含量)이 많이 함유(含有)되었다. 4. 잎의 탄수화물(炭水化物) 함량(含量)이 많올수록 K2O 함량(含量)도 많은 경향(傾向)이 있다. 5. 생체중(生體重)이 가장 많았던 전북이리 수집종(蒐集種)과 경북의성 수집종(蒐集種)은 잎의 N, P2O5, K2O 함량(含量)이 많았으나, 반대(反對)로 MgO, Zn, Ca, Mn, Fe 함량(含量)은 적게 함유(含有)되어 있었다.

The present study was conducted to evaluate agronomic characters of the soybean germplasm which was collected from the sites covering whole areas of southern Korean peninsula. A total of 2,748 Korean native soybeans was grouped for fruiting period and in this group frequency distribution of the important agronomic characters and relationships among the characters were determined. The results obtained were summarized as follows; The soybean germplasm was comprised of SeoulㆍKyonggi-do 7.5%, Kangwon-do 13.3%, Chungchongbuk-6.6%. Chungchongnam-do 12.3%, Chollabuk-do 10.7%, Chollanam-do 12.6%, Kyongsangbuk-do 20.8%, Kyongsangnam-do 15.3% and Cheju-do 0.6% in number of collections. Frequency distribution of the germplasm for fruiting period was 0.14% in Group I (below 55 days). 1.67% in Group II (56-60 days), 10.58% in (Group III(61-65 days), 23.18% in Group IV(66-70 days), 25.91% in Group V(71-75 days) 19.79% in Group Ⅵ(76-80 days), 15.1% in Group Ⅶ(81-85 days) and 3.6% in Group Ⅷ(over 85 days). The lines over 70 days in fruiting period were as much as 64.4% of germplasm. The fruiting period varied largely from 45 days to 91 days. Fruiting period was positively correlated to seed weight, days to maturity, days to flowering, plant height and number of branches per plant, respectively. While. it was negatively correlated to number of pods, lodging and virus infectivity, repectively, and in particular negative correlation was shown significantly between yield and fruiting period. Average yield was very high as much a 1.389kg/ha in fruiting period Group I, and decreased with increment of fruiting period, 1.400kg/ha in Group II. 1.384kg/ha in Group III. 1,299kg/ha in Group IV, 1,197kg/ha in Group V, 1,117kg/ha in Group Ⅵ, 967kg/ha in Group Ⅶ and 832kg/ha in Group Ⅷ.

현재 우리나라 전 지역에서 재배되고 있는 참깨 1401종을 수집하여 이들 수집종들에 대한 주요형질의 지역간 및 품종간 차이를 조사 검토한 바 다음과 같은 결과를 얻었다. 1. 종수색에 있어서는 시장성이 높은 백색종이 79%를 차지하였고 갈색종이 21%정도이었다. 2. 삭의 착과성과 실방수는 1과성 2실4방 종이 75%, 1과종 4실8방종 20%, 3과성 2실4방종 5%이었고, 충남 수집종 중에서 1과성 3실6방의 희귀종 2종이 발견되었다. 3. 파종 후 출현기에서 관화기까지의 일수는 중북부지역 수집종이 길고, 남부지역품종들이 짧은 편이였다. 4. 주당삭수는 개화일수가 긴 중북부지대종이 많고, 남부지대종들이 적었다. 5. 분지수는 1과성 2실4과종들이 다분지종이고, 3과성 2실4과종이나, 1과성 4실8과종들이 적은 경향이었다. 6. 과성에 따른 주부삭수와 종실중간의 상관관계는 1과성 2실4과종이나 1과성 4실8과종에서는 유의성이 인정되었으나 3과성 2실4과은 유의성이 인정되지 않았다. 7. 주당삭수와 종실중 및 분지수, 종실중과 분교수간에 정의 상관관계가 인정되었다.