Ethrel에 依한 麥類의 雄性不稔誘發

孫膺龍 한국작물학회 1972 Korean journal of crop science Vol.- No.12

油料作物의 生産및硏究에 있어서 當面課題

孫膺龍 한국작물학회 1968 한국작물학회지 Vol.6 No.1

작물에 흡수된 방사성 동위원소의 내부 조사효과에 관한 연구 (6) - 아마의 (亞麻) 생장에 미치는 P-32 의 영향

손응용(Eng Yong Son),김길환(Hwan Kil Kim),차종환(Jong Whan Cha),전정일(Chung Il Chan) 한국식물학회 1969 Journal of Plant Biology Vol.12 No.1

To investigate the effects of internal radiation of various intensity on the test crop(flax), seeds of four levels of activity(15.5×10 exp (-4) μc/grain, 9.O×10 exp (-2) μc/grain, 2.2×10 exp (0) μc/grain and 3.8×10 exp (1) μc/grain) which had been obtained by immersing them into various concentrations of P-32 original solution (total activity: 90 mc, To: 3/21) for 24 hours at room temperature, were germinated, transplanted later into pots, and the rate of germination and the successive growth were observed, and the inorganic conents of the plant top were analyzed. The results are as follows: 1. At the early stage of germination, the plants manifested themselves both inhibitory and promotive effects at higher and lower activity levels respectively, compared those of the control. These difference of growth on account of different levels of activity appeared, however, to be gradually narrowed in the course of time after germination, except at the highest activity. 2. Two weeks after transplanting, the plants of the lowest activity showed more vigorous growth than those of control. The plants belonging to the other activity levels on the other hand, tended to be less growing, the higher the activity. However, this growth gap between treatments seemed to be progressively closed one month after transplanting. 3. Most of the leaves and stems of the plants belonging to the highest activity level (3.8×10 exp (1) μc/grain) were withered during the early stage of growth, and this damage did not recover. 4. Practically no difference of growth was observed among treatments(excluding that of highest activity) one and half months after transplanting. 5. The fluorescence tended to be more delayed than the control, as the activity decreased. 6. There was a tendency that the number of pods harvested were larger in the plants treated with P-32 than that of the control. 7. The proportion of fiber in the plants at harvest appeared to be larger at lower activity and smaller at higher P-32 concentration than that of control 8. As for the inorganic contents of the plant top harvested the following tendency was observed: (1) Nitrogen content was highest at the highest activity level at which the poorest growth ensued. (2) There was no clear difference of phosphorus content among treatments. (3) The contents of potassium and magnesium were higher than control at the medium levels of activity. (4) Calcium content of all treated blocks was found to be more than that of control.

작물에 흡수된 방사성 동위원소의 내부조사효과에 관한 연구 (제8집) - P-32 용액에 침지한 (浸漬) 대맥종자의 (大麥種子) 발아 및 유식물의 (幼植物) 생장에 관한 연구

손응용(Eng Yong Son),김길환(Kil Hwan Kim),차종환(Jong Whan Cha) 한국식물학회 1969 Journal of Plant Biology Vol.12 No.3

Through immersing barley seeds (variety; Suwon No. 6) into different dilution of carrier-free P-32 original solution (Total activity; 90mc. To; 3/21) for 24 hours at room temperature, four groups of seeds (each group consists of 200 seeds) having activity levels of 1.6×10 exp (-3) μc ^(32)P/grain, 2.3×10 exp (-1) μc ^(32)P/grain 6.9×10 exp (0) μc ^(32)P/grain and 2.5×10 exp (1) μc ^(32)P/grain respectively, were obtained. To investigate the effects of various activity levels of P-32 absorbed upon the test plants, the seeds were germinated, transplant into the pots, and the growth was observed for three months after germination. After harvest, the inorganic contents in the leaves and the stems were also analyzed. The results: 1) Until four days after the beginning of germination, the rate of germination was found the lowest at the strongest activity level of 2.5×10 exp (1) μc/grain. At the other P-32 levels treated, it showed generally higher than the control. 2) Before transplanting the seedlings of both 1.6×10 exp (-3) μc/grain and 2.3×10 exp (-1) uo/grain levels showed more vigorous growth than the control, whereas at the 6.9×10 exp (0) uc/grain level a retarded growth was conspicuous and all of plants belonging to the highest activity level of 2.5×l0 exp (1) μc/grain were withered owing apparently to the radiation damage. 3) This trend of growth promotion was continually observed at the low activity levels even after transplanting the seedlings to the pots. As for the plants belonging to 6.9×10 exp (0) μc/grain level, a clear sign of graduai recovery from the damage afflicted at the earlier stage was observable, and as a result the plants showed more growth than those of control two months after transplanting. 4) The number of stems diverged was found somewhat small in the blocks treated with P-32, compared with that of control until two months after germination. At the later stage of growth there seemed no significant difference among themselves. 5) The dry weight of leaves and stems was proved that the lower the activity, the more it was produced. The relative increase of dry matter in each treatment compared with the control was 2% at 6.9×10 exp (0) μc/grain level, 9% at 2.3×10 exp (-1) μc/grain and 35% at 1.6×10 exp (-3) μc/grain respectively. 6) The inorganic contents of the leaves and stems harvested were proved that: (1) Nitrogen was highest at the lowest activity level of 2.3×10 exp (-1) μc/grain. (2) Phosphorus showed generally higher contents in the treated blocks than in control, with the peak being at 2.3×IO exp (-1) μc/grain level in the leaves and at 6.9×10 exp (0) μc/grain in the stems. (3) These was no significant difference in potassium contents in the leaves between treatment and control, whereas in the stem the trented blocks were higher than control roughly in propotion to the activity level. (4) Calcium in the lesves was richer in treated blocks than control while in the stem no difference was seen. (5) Magnesium contents both in leaves and in stems there was no difference among treatments.

콩 生育時期別 蒸發散量의 推定模型 設定

孫膺龍,嚴基哲,柳寬植,金基駿 한국작물학회 1988 한국작물학회지 Vol.33 No.3

Ethephon (2-Chloroethylphosphonic acid)을 이용한 담배 건조법개선에 관한 연구

孫膺龍 韓國作物學會 1974 Korean journal of crop science Vol.- No.15

Ethephon을 이용하여 현행 잎담배 건조법을 개선해 보고저 우리나라 담배 제조용 주요품종인 Yellow Special A와 Coker를 논에 재배하고 성숙기에 4수준의 Ethephon액을 살포함으로서 Ethephon의 건조에 미치는 생리적 효과를 조사하였던 바 아래와 같은 결과를 얻을 수 있었다. 1. 처리잎은 무처리잎에 비하여 성숙중에 현저한 엽록소의 분해를 일으켰다. 따라서 황변(성숙)이 촉진되었으나 처리수준 사이에는 큰 차가 없었다. 2. 성숙과정에서 처리잎은 무처리잎에 비하여 탈수율이 높았던 관계로 수확시 이미 수분함량이 약 10% 적었다. 그러나 처리수준 사이에는 탈수율에 큰 차가 없었다. 같은 조건하에서 건조할 때는 처리잎의 건조가 하루(1일) 앞당겨졌다. 3. 건조과정에서는 처리잎에서보다 무처리잎에서 엽록소의 분해가 더 크게 일어났다. 따라서 건조완료된 잎담배의 황색도는 처리잎이나 무처리잎이나 비슷했다. 4. 건조과정에서 처리잎은 무처리잎에 비하여 전 Alkaloid함량이 현저히 감소되었으나 당전분 및 전질소함량에는 큰 변화가 없었다. 따라서 Ethephon처리로 인하여 잎담배 품질이 저하된다고 보이지 않았다. 5. 처리잎은 이미 성숙기에 황변이 촉진되었을 뿐 아니라 탈수도 많이 되었던 관계로 증효기 및 신장기를 생략한 황변기, 색택고정기 및 중골건조기의 3단계로서 건조를 끝낼 수 있었다. 6. 처리된 잎담배의 수량이 2% 감소된 셈이다. 처리잎은 관행건조소요시간(100시간)의 40%를 단축하여 건조할 수 있었음으로 연료비가 50%가량 절약되었다. 7. Ethephon처리로 말미암아 담배 성숙 및 건조 시간이 단축되었기 때문에 수확 및 건조에 요하는 비용을 대폭 절감할 뿐 아니라 금후 담배의 기계수확 및 집단건조도 가능하게 될 전망이 보였다. 따라서 Ethephon을 담배 농사에 이용하면 담배 생산농가의 노력 및 시설을 더욱 효과적으로 활용하여 소득을 증대시키는데 큰 도움을 준다고 믿게 되었다. Five different levels of Ethephon were treated on tobacco cultivar yellow Special A and Coker and harvested for curing. Changes in dehydration properties, yellowing, chlorophyll, nicotine, sugar and starch contents during the processes of curing were studied in order to justify feasibility of adoption an idea of 3-stage-curing method instead of the 5-stage. Ethephon-treated-tobacco leaves showed marked degradation of chlorophyll, greater dehydration and greater reduction in nicotine contents while little change in either sugar, starch and other chemical components. They showed also shorter hours of curing period allowing possible curing response at a relatively low temperature than those without treatment. Thus they undergo only 3 stages of flue-curing processes, yellowing, calor-fixing and vein-drying, and need 72 hours to finish curing, but the ordinary leaves need 100 hours for it.

多變量 解析法에 의한 왕골의 品質群 分類

Eung Ryong Son(孫膺龍),Byung Sun Kwon(權炳善),Jung Il Lee(李正日),Hi Jin Park(朴熙塡) 한국육종학회 1990 한국육종학회지 Vol.22 No.1

Sixty four wanggol cultivars were largely classified into ten varietal groups, and six groups out of them forming the group by one variety to high variation in various characteristics whereas the others tended to low. Group Ⅰ and Group Ⅴ contained fifteen (23%) and thirty nine cultivars(61%), respectively Group Ⅱ showed medium or late flowering, but Group Ⅴ revealed early flowering and considerably large variation in various characteristeics. Most of the varietal groups were not associated with their geographical origin. Days to flowering and plant height among the nine characters were the largest contributors to the D²in both intra and inter groups.

봄배추의 시비반응(施肥反應)에 미치는 토양수분(土壤水分) Potential의 영향(影響)

엄기철,손응용,유순호,Eom, Ki-Cheol,Son, Eung-Ryong,Yoo, Sun-Ho 한국토양비료학회 1983 한국토양비료학회지 Vol.16 No.2

토양수분조건에 따른 시비반응을 구명(究明)하기 위하여 본량(本良) 사양토(砂壤土)에서 토양수분처리($M_0$무관수, $M_1$-0.1~-1.0bar, $M_2$-0.1bar~-0.5bar, $M_3$-0.1~-0.2bar)와 시비수준(施肥水準)(N-P-Kkg/10a, 0-0-0, 11.5-10-12.5, 23-20-25, 34.5-30-37.5)을 달리하여 봄배추의 생육상태(生育狀態), 물소모량(消耗量), 양분흡수량, 비료이용율(肥料利用率), 수량 등을 조사(調査)한 결과(結果)는 다음과 같다. 1) 20cm 깊이에서 토양수분 Potential이 -2.0bar 이하(以下)일 때 물소모량은 감소(減少)하였고 비료(肥料)에 의(依)한 생장량(生長量)의 증가는 없었다. 2) 배추의 양분흡수량(養分吸收量)은 시비량(施肥量)의 증가에 따라 토양수분 Potential이 낮을 때는 감소(減少)하는 경향(傾向)이었고, 토양수분 Potential이 높을 때는 증가하는 경향(傾向)이었다. 3) 질소(窒素)와 가리(加里)의 이용율(利用率)은 토양수분 Potential과 시비수준(施肥水準)이 정비례관계(正比例關係)에 있어야 이용율(利用率)이 증대되었다. 4) 봄배추의 수량(收量)은 토양수분 Potential이 낮을 때에는 시비량(施肥量)을 증가시켜도 증수가 없었으며, 토양수분 Potential이 높을 때에는 각(各) 시비수준(施肥水準) 공(共)히 증수효과(增收效果)가 있었고 그 효과(效果)는 다비수준(多肥水準)에서 더욱 뚜렷하였다. 5) 토양수분 Potential을 높게 유지(維持)시킬 경우(境遇)에는, 시비량(施肥量)을 증가시킴에 따라 봄배추 수량(收量)이 거의 직선적(直線的)인 증가경향을 보여, 최대수량을 낼 수 있는 비료요구량(肥料要求量)이 크게 증가되었다. Differences in fertilizer responses of Chinese cabbage to soil water status were investigated in a field experiment. The growth pattern, water use, nutrient uptake, apparent efficiency of fertilizer and yield were analyzed under the 4-different fertilizer levels (N-P-K rate, kg/10a: 0-0-0 Fo, 11.5-10-12.5 Fo.5, 23-30-25 F1.0, 34.5-30-37.5 F1.5 and under the 4-different soil water status levels (non irrigated plot Mo, -0.1 to -1.0 bars M1, -0.1 to -0.5 bars M2, -0.1 to -0.2 bars M3). The soil was Bonryang sandy loam in the experimental farm of the Institute of Agricultural Sciences, Suweon. The growth and yield responses to the fertilizer levels showed a large difference between F0 and F0.5 but little differences were recognized between F0.5, F1.0 and F1.5 when the soil water potentials at 20-cm soil depth were lower than -2.0 bar. Under the well irrigated soil conditions, M2, and M3, the growth and yield responses to the fertilizer levels were significantly increased and the nutrient requirements were increased as well. The total uptake of nutrients decreased as the fertilizer amounts increased when the soil water potentials were low, while the total uptake of nutrients increased when the soil water potentials were high. Therefore, in considering nutrient availability of the applied fertilizers, the soil water status should be taken into account.

油菜 成分育種 効率을 增進키 위한 世代短縮 技術開發에 關한 硏究

李正日,孫膺龍,朱基坪 한국작물학회 1975 한국작물학회지 Vol.20 No.1

잎담배의 成熟促進 및 Alkaloid 含量에 미치는 2-Chloroethylphosphonic Acid의 效果

文斗吉,孫膺龍 한국작물학회 1972 Korean journal of crop science Vol.- No.12