대맥의 등숙일수와 수량구성요소와의 관계에 대한 유전연구 1 : 대맥의 생리적 성숙기 기준 설정

千鍾殷,李殷燮,李弘䄷 韓國作物學會 1982 Korean journal of crop science Vol.27 No.1

보리의 생리적 성숙기를 외시적 형질의 변이로서 판정할 수 있는 기준을 설정하여 효과적인 단기 등숙성 계통선발과 등숙유전 연구에 활용하고저 33 품종 및 계통을 4 출수군으로 분류하여 5개 형질에 대하여 검토하였다. 그 결과를 요약하면 다음과 같다. 1. 조기출수 품종일수록 등숙기간이 길어져 출수기와 등숙기간에는 고도의 부의 상관(r=0.656** )를 보였고, 품종간 등숙기간의 차이가 인정되었다. 2. 성숙기 결정에 이용된 각형질중 수분함량과 외영의 색도변화가 가장 유효하였다. 3. 생리적 성숙기를 외시적 측정에 의하여 결정할 때 외영의 색도가 가장 안정하고 민감하게 변화하여 유용한 형질이었다. 또한 지엽의 색도변화를 같이 고려한다면 더 정확한 숙기판단이 될 것으로 본다. 4. 이 시기에 외영의 색은 Grayish yellow (연회황색)이었고, 평균 수분함량은 약 33%이었다. Experiments were carried out to establish physiological maturity determination criteria with reference to visibly easy measurement in barley in 1980 at Suweon. Thirty-three cultivars and lines from 500 crossing blocks were classified into 4 heading groups, and 5 variables; moisture content, discoloration of awn, exsertion, lemma and flag leaf were measured. There were highly negative correlations between heading date and ripening periods (r=-0.656** ), so early heading types had longer ripening periods. Comparing with the variables used for maturity determination, moisture content and discoloration of lemma were most sensitive to development of grain-filling. Those two variables, alone or in combination could be used to screen many genotypes of barley for physiological maturity. In determination of maturity with reference to visibly easy measurement, color of lemma changed stably and was the most useful way and discolor of flag leaf increased the accuracy of determination. The color of lemma at this time was Grayish yellow, and the mean moisture content was about 33 percent in 33 barley cultivars and lines.

NIRS에 의한 녹차품질 평가

천종은 한국차학회 2010 한국차학회지 Vol.16 No.3

The objective of the present work was to develop a rapid and accurate method to evaluate the quality and major chemical components of tea using near-infrared spectroscopy (NIRS). A total of 44 green tea samples were collected from the market places of several regions. The organoleptic quality of the green tea samples used in this work was assessed by professional tasters. The several chemical components were investigated by NIRS. Variations (based on CV = 2.4~4.0%) among the panelists that participated in the sensory test were relatively small, and differences in taste quality of the green tea samples were small. The ranking of taste quality was highly negatively correlated with the contents of vitamin C, total nitrogen, caffeine, theanine, and amino acids while negatively correlated with detergent fiber content. The powders of 44 processed green teas were scanned by NIRS with 1100~2500 nm bands in reflectance mode. The calibration equation for ranking of organoleptic quality was developed using the regression method of modified partial least squares (MPLS) with internal cross validation. The equations had low SECV (standard errors of cross-validation) and high R² (coefficient of determination in calibration) values of 0.963, indicating that NIRS could be used to rapidly and accurately evaluate the ranking of organoleptic quality in processed green teas.

한발조건이 콩식물체의 엽운동, 광합성능, 증산량, 수량 및 관련 형질에 미치는 영향

千鍾殷,金晋鎬 韓國作物學會 1992 Korean journal of crop science Vol.37 No.4

토양수분 부족이 콩식물체의 엽운동, 광합성능, 증산량, 수량 및 관련 형질에 미치는 영향을 조사하기 위해서, '단엽콩', '방사콩', '보광콩', '무한콩'을 비닐하우스 내에 폿트 재배에서 2주간 단수처리하여 실험을 하였다. 1. 광합성능은 광량(0.887** ), 기공전도율(0.788** ) 및 엽온(0.744**)과 고도의 유의적인 정 상관이 있었다. 2. 1일중 광량과 온도가 증가함에 따라 콩의 복엽중 중앙의 소엽은 측렬의 소엽에 비해 더 빨리 엽운동이 시작되고 광합성능이 높은 반면에 수광량, 엽온은 다소 낮았다. 3. 한발구에 비해 관수구의 광량은 358 umole m2 s1, 기공전도율은 0.2 mole m2 s1, 엽온은 9℃ , 증산량 3.7 mole m2 , 광합성능은 8.5 CO2 , u mole m2 s1이 각각 높았다. 4. 관수구에 비해 한발구의 수량 및 관련 형질이 다양하게 감소되었다 ; 개체당 건물중 8%, 개체당 근류중 7%, 근중 14%, 간장 3%, 분지수 7%, 경태 8%, 개체당 협수 17%, 개체당 립중 17%가 각각 감소되었다. To investigate effects of water stress on apparent photosynthetic, transpiration rates, leaf orientation, yield and its related traits, four soybean varieties were planted on the Wagner pots in a plastic house covered with polyethylene film. As the light intensity and leaf temperature in a day increased, the movement of central leaflet in the second leaf of main stem occurred earlier than that of the lateral leaflet. The apparent photosynthetic rate of the central leaflet was higher than that of the lateral leaflet, but light intercept and leaf temperature of lateral leaflet were higher than those of the central leaflet. The apparent photosynthetic rate had highly positive correlation with the photon flux density, stomatal conductance and temperature, respectively. The photon flux density, stomatal conductance, transpiration and photosynthetic rates in the control were significantly higher than those in the water stress plot. The yield and its related traits in the water stress plot became decreased significantly in comparison with the control.

대맥의 출수기 및 등숙기간의 유전 3 : F2 및 태교잡을 이용한 출수기와 등숙기간의 유전 및 선발효율

천종은,이홍석,이은섭,이상양,윤의병 한국육종학회 1985 한국육종학회지 Vol.17 No.1

PEG 6,000에 對한 麥酒보리 品種의 發芽率, 發芽勢 및 苗伸長 反應

千鍾殷,金東喆 順天大學校 農業科學硏究所 1991 農業科學硏究 Vol.5 No.-

Germination and seedling elongation of malting barley cultivars(Hangmaek, Sacheon6, Doosan8,12,22 and 29) were investigated at the six polyethylene glycol 6,000(PEG) solutions(0,100,150,200,250 and 300g/㎏ water). Adjustments of PEG solutions were based on the osmotic potentials of 0.0 - 0.166, -0.326, -0.534, -0.794 and -1.105 MPa at room temperature. The measurements were made at 2,3,4 and 9days after seeding. Fifty seeds of each cultivar were placed on Whatman No.1(9㎝) filter paper in plastic petri dishes, and added to 5-6㎖ of the proper PEG solutions under dark conditions. The germination rate of six malting barely cultivars did not decrease as PEG concentrations increased, with very excellent germination rate of all cultivars. However, the germination rate index(germination speed;GRI) markedly decreased below the osmotic potential of -0.326 MPa. The decrement rates of seedling length and fresh weight were 51% at PEG 150g/㎏ water and 30% at PEG 200g/㎏ water, respectively. The GRI and seedling length with increase of PEG concentrations follow almost the second degree polynomial and linear regression, respectively. The results of this study indicated that the measurements of GRI and seedling length of malting barley seeds in aqueous solutions of PEG would be very good indicator for screening cultivars for improved seed vigor during moisture stress.

근적외선 분광광도계를 이용한 차제품의 표면 색상 및 발효정도 측정

천종은 한국작물학회 2009 한국작물학회지 Vol.54 No.1

녹차, 부분발효차 및 발효차 등 다양한 차제품 117개 제품을 수집하여 분말화하여 측색계로 각 차제품의 표면 색상을 측정한 후 NIRS를 이용하여 가시광선 대역(400~700 nm)에서 스펙트럼을 얻어 중회귀분석에 의해 각각 색상 관련 특성에 대한 검량식을 작성하였다. 1. 측색계로 제품의 색상을 측정한 결과 CIE color scale에서 L값(6.98), a값(0.25) 및 b값(15.42)이 높았으나, a/b(0.09)값은 Hunter color scale에서 높았다. 또한 색상관련 특성 a* (a)와 a*/b* (a/b)의 변이계수가 317.2~327.5% 와 293.8~316.7% 로 제품간 변이성이 매우 컸다. 2. CIE color scale와 Hunter color scale에서 발효정도(X9 )의 변이를 a*/b*(X4) 나 a/b(X8 )로 99.7% 설명될 수 있어 a*/b* (a/b)값으로 차제품의 발효정도를 추정할 수 있다. 3. Modified partial least square(MPLS)를 이용하여 작성된 검량식의 결과 두 color scale을 종합하여 L값의 검량식 작성시 결정계수(R2 )는 0.973~0.977 , 검증시 상관도(1-VR) 0.969~0.972 , a값의 결정계수는 0.999, 검증시 상관도 0.998, b값의 결정계수는 0.858~0.902 , 검증시 상관도 0.833~0.888 , a/b값의 결정계수는 0.997, 검증시 상관도 0.993으로 매우 높았다. 4. 차 제품 표면 색상관련 특성들(CIE color scale; L* , a* , b* , a*/b* , Hunter color scale; L, a, b, a/b)의 검량식 정확도가 매우 높아서 NIRS의 가시광선 대역(400~700nm )에서 이들 특성을 용이하고 정밀하게 측정할 수가 있으며, 또한 근적외선 대역(900~2500nm )에서 기존 성분분석 화일과 병합하여(merge) 차 제품의 표면 색상 및 화학적 성분을 1~2 분내로 동시에 측정이 가능하다. This study was conducted to measure tea surface colors using the visible bands (400~700 nm) with near-infrared spectroscopy (NIRS). The surface colors of 117 tea products were measured with a colorimeter. The a*/b* (CIE color scale) or a/b (Hunter color scale) ratios in different tea products accounted for about 99.7% of the variation in fermentation degree (FD), indicating that the a*/b* (a/b) ratio is a very useful trait for assessing fermentation degree. Also tea powders were scanned in the visible bands used with NIRS. Calibration equations for surface colors and fermentation degree were developed using the regression method of modified partial least-squares (MPLS) with internal cross validation. The equations had low SECV (standard errors of cross-validation), and high R2 (coefficient of determination in calibration) values with 0.779~0.999 , indicating that the whole bands (400~2500~;nm ) with NIRS could be used to rapidly measure traits related to surface color, fermentation degree and other chemical components in tea products with high precision and ease at a time.

보리 분얼성 동질유전자계통의 재식밀도 조절에 따른 특성 변화

千鍾殷 韓國作物學會 1996 Korean journal of crop science Vol.41 No.1

보리 분얼성 isogenic line 4계통(Kindred, Morex)을 이용하여 파종양 및 결주율에 따른 주요 형질의 변화를 조사하였다. t. 다얼성 계통은 단간성 계통에 비하여 곡립의 수양은 46%, 엽면적지수 56%가 높았으나, 단간성 계통은 정립률이 69% 천립중은 27%가 높았다. 2. 단단성 계통은 출수기가 4∼8일, 성숙기는 2∼3일 빨랐다. 3. 곡립수양은 수수에 따른 직선회귀에 잘 적용되어 수수의 기여도가 매우 컷다. 4. 결주율이 증가함에 따라서 1수입수 및 천립중이 다소 증가하나 수수의 감소로 곡립의 수양이 현저히 감소되었다. 5. 반면에 결주율이 증가될 때 정립률, 엽의 광합성능 및 분얼수가 증가하였다. 6. 분얼성 isogenic line이 재해에 의해서 결주가 발생시 수수가 곡립의 수양을 좌우하였다. 7. 단간성 인자의 도입, 육종 및 보급을 위해선 이들 동질유전자 계통을 포장에 다년간 반복 실험하여 보다 정밀한 평가가 이루어져야 한다. Several major agronomic traits of 4 isogenic lines for tillering(Kindred, Morex)were investigated under the different seeding rates and seedling mortality grown in the pots. The normal-tillering phenotypes had higher grain yield(46%) and leaf area index(56%) than their uniculm isogenic counterparts. The assortment rate(69%) and 1,000 grain weight(27%) in uniculm type were greater than the normal type. Uniculm plants were earlier in heading(4∼8days) and maturing(2∼3 days) dates compared with their counterparts. The grain yield was fitted to linear regression, ranged 0.659g to 0.5g per spike number. On increasing the seedling mortality rates, the grains per spike and 1,000 grain weight were slightly decreased, but the grain yield per plot was decreased markedly because of decrease of spikes per plot. The assortment rate, leaf photosynthetic capacity and reproductive tiller number were increased with increase of seedling mortality. The grain yield was largely dependent on the number of spikes per plot on occurrence of seedling mortality. For the uniculm genotypes to be introduced and bred into a present leading variety, the isogenic lines were precisely tested in the open field for a couple of years.

보리의 파성소거 정도에 따른 엽출현, 유수분화, 절간신장 및 출수기의 변이

천종은,이은섭 한국작물학회 1991 한국작물학회 학술발표대회 논문집 Vol.1991 No.-

麥酒麥의 越冬前 草型에 따른 主要 形質의 比較

千鍾殷 한국작물학회 1991 한국작물학회지 Vol.36 No.1

보리의 品質

千鍾殷,崔昌休 順天大學校 農業科學硏究所 1994 農業科學硏究 Vol.8 No.-

The purpose of this report is to suggest barley breeders and researchers to improve the nutritional, cooking, eating, alcoholic and malting qualities of barley variety according to its usage. the amounts of protein, starch, lipid, minerals and vitamins in barley grains, especially lysine should be higher, and whiter, waxy, and naked lines are required for human food. A line having more starch and self diastatic power should be selected for alcoholic grains. Also, malting barley lines are required to have the characters of higher germinative energy, lower protein, lower β-glucan, higher extract and diastatic power. In conclusion, higher nutritional quality of barley should be a principal programme for enhancing its future usage.