http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 최경구 (검색결과 181 건)
- 무료
- 기관 내 무료
- 유료
-
최경구,이윤수,차광호 韓國藥用作物學會 2006 한국약용작물학회지 Vol.14 No.3
더덕 종자의 파종시 산파에 의한 종자 손실이 클 뿐만 아니라 입모 후 잡초 발생에 의한 제초 관리가 어려워 재배 농가에서 어려움이 많아 발아 미세환경을 개선시킬 수 있을 뿐만 아니라 기계화 점파 및 멀칭 재배가 가능하고 제초문제를 해결할 수 있는 더덕 종자 펠렛팅 연구를 실시하였던 바 그 결과를 요약하면 다음과 같다. 다양한 피복물질을 이용한 펠렛팅 종자의 발아율은 PID처리가 가장 높았으며 Illite, PIT, Diatomite, BT 순으로 높게 나타났다. 접착물질은 PVP 처리가 가장 발아율이 높았으며 PVA, XG, CMC, AG 순으로 높게 나타났다. 펠렛팅 종자의 피복소재별 성형율, 강도는 PID 가 가장 좋았으며, 발아율에 가장 좋은 물리적 특성은 수분 접촉시 split형의 1/2 균열이 생기고 수분 흡수력은 S자형의 흡수 양상을 보였다. 토양함수량에 따른 발아율은 50% 조건에서 PID처리가 가장 좋았으며, 수분함수량이 높을수록 펠렛팅 종자의 발아율은 증가되는 경향이었다. This study was conducted to select Codonopsis lanceolata seed's new pelleting particulate materials and adhesives. Different adhesives (Polyvinyl alcohol (PVA), Carboxymethyl cellulose (CMC), Polyvinyl pyrrolidone (PVP), Xanthan gum (XG), Arabic gum (AG)) and particulate materials (Illite, Diatomite, Pyrophyllite + Illite + Diatomite (PID), Pyrophyllite + Illite + Talc (PIT), Bentonite + Talc (BT)) were tested for seed pelleting. PID for Codonopsis lanceolata seed pelleting appeared to be the best particulate material. Among the pelleting adhesives, PVP was the best adhesive for seed pelleting, and the optimum concentration for germination of pelleting seed was 1 %. Germination rate of the pelleted seeds treated with PID particulate material and PVP adhesive was higher (86.8%) than those of raw seeds (85.5%). T50 and MDG of pelleted Codonopsis lanceolata seed required five and eight days at soil moisture content of 50%, respectively.
-
人蔘種子에 있어서 後熟過程中 內生 Hormone의 變化
崔京求,張熙振,柳南熙 全北大學校 1994 論文集 Vol.37 No.-
This study was conducted to investigate the seasonal changes of inhibitors during after-ripening of the ginseng seeds. The bioassays of lettuce seed germination rate to the water and chlorogorm soluble fraction extracted from ginseng seeds during stratification were applied. The obtained results were summarized as follows: 1. Three kinds of germination inhibitors were detected in the water soluble fraction of the after-ripening seeds, and the activity of inhibitors was more increased at the Rf 0.1 zone than that of the Rf 0.4-0.5 and 0.8-1.0 zone. 2. Chroloform soluble fraction showed the similar tendency to the water soluble fraction, and promoter was recognized at the Rf 0.1-0.2 zone in the seeds of 90th day after stratification. The inhibitor of the Rf 0.1-0.2 zone increased in accordance with stratification, and that of the Rf 0.9-1.0 zone decreased slightly. 3. On the whole, the physiological activities of three kinds of germination inhibitors from the water soluble fraction showed more increase than those of the chloroform soluble fraction. 4. The water and chloroform soluble 'faction from the embryos of ginseng seeds during stratification showed two kinds of germination ingibitors at the Rf 0.4-0.5 and 0.9-1.0 zones, and water soluble fraction from the endosperms of ginseng seeds showed three kinds of inhibitors at the Rf 0.1-0.2. 0.4-0.5 and 0.7-1.0 zones.
-
崔京求,李成春,張永男 전북대학교 농업과학기술연구소 1983 農大論文集 Vol.14 No.-
The purpose of this study was to search the variability of salt tolerance among the major rice varieties in the germination period by the difference in the rooting activity of the seedlings grown for 15 days after transplanting of 30-day-old ones in different salt solutions. The germination ability was checked under the temperatures of 15, 25 and 35℃, and 7 levels of salt solutions. such as 0, 0.15, 0.30, 0.50, 0.75, 1.00 and 1.50%, respectively. The rooting activity of 33rice cultivars was checked with salt solutions of 0, 0.15, 0.30, 0.50, 0.75 and 1.00%. The results obtained are summarized as follows: 1. The germination percentage and the hermination speed were significantly increased as the temperature rose up from 15℃ to 25℃ and 35℃. 2. At the same temperature, the germination percentage and the germination speed of decreased as the salt concentration increased. This was more apparent at the low temperature(15℃ plot) than at the high temperature such as 25℃ and 35℃ plot. The salt damage in germination showed even more at lower concentration at the 15℃, than that at the 25℃, or 35℃. 3. The decreasing ratio of the germination percentage and the germination speed of the early, medium and late maturing cultivars were not greatly influenced at the high temperature as the salt concentration increased, but those at the low temperature were outstandingly decreased. Particularly, the early and medium maturing varieties were severely damaged at low temperature han at high temperature. 4. The germination speed of the rice cultivars that originated from japonjca and indica-japonica hybrids (Tongil lines) were generally impeded by increasing the salt concentrations. The degree of salt damage in germination was higher in Tongil lines than that of japonica varieties. 5. Remarkably significant negative correlations were recognized between slat concentrations, germination percentage and germination speed regarless of the origin of cultivars and maturing season. The relationship of salt concentration and germination speed was more distinguished and that showed marked correlation coefficient at the low temperature (15℃) than at the high temperature (25℃ or 35℃). 6. It follows that it may be resonable evaluate the salt tolerance of rice seeds by comparison of germination speeds at low temperature. The tested 33 major cultivars for salt tolerance could be classfied as follow: High; Palkweng, Palkum, Mangyeong, Dongjinbyeo, Dongimbyeo, Chucheongbyeo. Medium; Tongil, josaengtongil, Hwanggeumbyeo, Geumgangbyeo, Palgwangbyeo, Taebaegbyeo, Chupungbyeo, Nampungbyeo, Yushin, Saesbyeolbyeo, Iri-332, Sameseongbyeo, Seogwangbyeo, Baegunchalbyeo, Jinjubyeo,Pungsanbyeo, Baegyangbyeo, Milyang-21, Milyang-22, Milyang-30, Milyang-42, Cheongcheongbyeo. Low; Manseogbyeo, Hangangchalbyeo, Pungsanbyeo, Raekyung, Milyang-23 7. Plant height, root length and fresh root weight of seedings grown 15 days after transplating in different salt solution were gradually reduced with salt concentrations, but the number of roots was less affected than others. 8. There existed remarkably signifficant negative correlation between salt concentration and pant height, root length, and fresh root weight, and that with root length showed apparantly with comparison of the others. 9. The rooting activity of the cultivars was estimated by measuring root length in different salt solutions. The tested cultivars for rooting activity could be classified into three groups as follows; High; Josaengtongil, Hwanggeumbyeo, Yushin, Saesbyeobyleo, Pungsanbyeo Middle; Tongil, Geumbyeo, Manseogbyeo, Palgwangbyeo, Taebaegbyeo, Chupung byeo, Hangangchalbyeo, Nampungbyeo, Palkweng, Palkum, Iri-322, Samseongbyeo, Seowangbyeo, Bagunchalbyeo, Jinjubyeo, Baegyangbyeo, Nagdongbyeo, Milyang-21, Milyang-22, Milyang-23, Raekyung, Milyang-30, Milyang-42, Cheongcheongbyeo, Dongimbyeo, Chucheongbyeo Low; Mangyeong, Dongjinbyeo.
-
-
崔京求,崔定植,金鎭基,權湧周,李王休,全炳機 전북대학교 농업과학기술연구소 1981 農大論文集 Vol.12 No.-
The present study was a part of the project surveying ecological characteristics of soybean collections for breeding materials. Under short day conditions (9 hrs) after flowering, all fifty-five cultivars showed the following results. 1. Seed ripening periods were shortened under short day conditions after flowering, and the accelerating rate was larger in the cultivars from the USA and other country than with domestic or Japanese cultivars. 2. Accelerating in maturity was larger in Kwangdu. Tousan 69, Ao-7445, Pi-31408 and Pi-68552, whereas the flowering nonsensitive varieties under short day conditions, like Haman. Gembokin, Harosoy, Wirth, Wayne and Pi 54613, had the same nonsensitivity in maturity. 3. The short day length during the seed ripening period tended to decrease morphological characteristics such as stem height, stem diameter, number of nodes, number of pods per plant, and number of seeds per plant showing little difference between varieties or their origins. 4. The short day conditions during the ripening period caused a decreas in 100 seed weights showing little variation between origins. The short day leneth also influenced weight of seed per plant showing a difference between origins-that is domestic varieties showed a larger decrease than those from the USA or Japan.
-
-
최경구,오재희,김성수,김재묵 한국세라믹학회 1992 한국세라믹학회지 Vol.29 No.7
The influence of excess iron content (x) and reaction atmosphere on permittivity, permeability and microwave absorbing properties has been investigated in composite specimens embeded with (Ni0.4Zn0.6O)1-x(Fe2O3)1+x powders. A nitrogen atmosphere used for the reaction of the ferrite with excess iron composition (x>0) enhances spinel formation, and thereby increases both the magnetic and the dielectric loss of the ferrite composite. We also investigated the relation between the electromagnetic constants and the absorbing properites using impedance-matching solution maps for zero reflection. It is suggested that a superior microwave absorber can be fabricated through atmosphere and excess iron control during the powder process.
-
植物生長調節劑가 人蔘 callus 의 蛋白質 및 酵素에 미치는 影響
崔京求,金鎭基,韓美淑,柳南熙,玄東允 전북대학교 농업과학기술연구소 1994 農大論文集 Vol.25 No.1
This study was carried out to investigate effects of some plant growth regulators on i) callus induction and growth, ii) protein contents and profile, and iii) some enzyme patterns in ginseng callus during tissue culture. Good callus induction was obtained by 2·4-D alone and 2·4-D+ NAA+ Kinetin combination. Most vi-rourous callus growth, however, was obtained by 2· 4-D+ NAA# Kinetin combination. Protein content in ca31us was affected by hormone treatments showing highest content in 2· 4-D +NAA + Kinetin combination. Protein compositions, however, were similar in all hormone treatments. Hormonal effect on several enzyme patterns in tissue culture was a]so examined. Three major malate dehydrogenase (MBH) activity bands were observed in all hormone treatments being highest MDH activity, however, was observed in 2·4-D+ NAA+ Kinetin combination treatment. Peroxidase activity bands were similar in all treatments. No esterase activity bands were observed in any hormone treatments.
-
고구마의 채묘 후 저장일수에 따른 괴근의 생육특성 및 생산력 검정
최경구,차광호,유남희 전북대학교 농업과학기술연구소 2001 農大論文集 Vol.32 No.1
Yield and quality of tubers depend largely on rapid rooting and proper establishment of vine cuttings, especially in the early harvest culture for marketable products. Therefore, this study was conducted to obtain detailed information about the effects of vine-cutting holding on the tuber growth and yield. In this experiments, the vine cuttings, 20~25 cm and 25 g FW, were prepared from the base of vine and stored for 1, 3, 5, 7, 9 days before transplanting in the shade room at 20±0.5℃, RH 68±1%. 1. The shpe of tuber root of Sinhwangmi was close to spindle type and that of Zami was similar to long elliptical type. 2. The uniformity grade in the shape of tuber root of both cultivars was very high until the 5-day holding but decreased thereafter. 3. The diameter of tuber root of both cultivars continued to increase until the 5-day holding but decreased thereafter. 4. The weight of tuber root per plant of both cultivars was good as follows ; 5-day holding > 3-day holding > 7-day holding > 1-day holding > 9-day holding. 5. There was little difference between both cultivars in the number of tuber roots per plant. 6. The number of marketable roots per plant was highest at the 5-day holding.
-
DBpia
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
