• 한국작물학회지
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• 제48권5호
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• pp.397-401
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• 2003

This experiment was conducted to know the characteristics of kernel growth as affected by various temperature regimes during grain filling using the varieties Hwaseongbyeo, Ilpumbyeo and Chucheongbyeo. The rice plants tested were grown in the natural condition at 1/5000a Wagner pots until flowering. After flowering, the rice plants were moved to controlled temperature conditions in a phytotron. The minimum/maximum daily temperature in the phytotron was controlled by 12/18, 15/21, 18/24, 21/27, and 24/$30^{\circ}C$, respectively. The grain weights were measured every three days after treatment. The mean daily kernel growth rate during active grain filling period showed different responses among varieties under various temperature regimes. The kernel growth rate of Chucheongbyeo was seriously reduced as temperature regimes were decreased. However, that of Ilpumbyeo was not influenced so critically. Ilpumbyeo showed some advantages in grain filling under low temperature regimes compared to Chucheongbyeo. The lag phase in grain filling of Chucheongbyeo was the longest among tested varieties, followed by Hwaseongbyeo under daily mean temperature regime of $15^{\circ}C$. Kernel weight of Ilpumbyeo increased fast in early grain filling phase under low temperature. This characteristic may be favorable for grain filling in temperate zone where the daily mean temperature is drastically dropped during grain filling period. Regression analysis with kernel growth rate and temperature showed the estimated critical low temperature for grain filling among varieties were $9^{\circ}C$, $12^{\circ}C$, $13^{\circ}C$ in Ilpumbyeo, Hwaseongbyeo and Chucheongbyeo, respectively. Under moderate temperature the duration of grain filling of Ilpumbyeo was longer than that of Chucheongbyeo. However, Under low temperature that of Ilpumbyeo was more favorable than Chucheongbyeo.

• 한국작물학회지
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• 제53권3호
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• pp.308-313
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• 2008

쌀 수입 개방과 소비량이 감소되고 국민의 생활수준이 향상 되면서 소비자는 고품질의 농산물을 추구하게 되었고, 밥맛이 좋은 품종 및 재배방법 개발에 대한 연구가 필요하게 되었다. 이와 같은 노력의 결과 일품벼를 육성하여 농업인에게 보급하였고 밥맛이 좋으면서 단위면적당 쌀수량이 많아서 농업인이 선호하게 되었다. 하지만 일품벼에 대한 선호도가 향상되는 단계에서 농협 및 지자체에서 쌀을 브랜드화 하면서 대형 미곡종합처리장이 설립되고 시설이 좋아지면서 벼를 산물로 수매하게 되고, 도정률에 의한 차등수매 체제로 변화되었다. 이러한 상황변화는 도정률이 낮은 품종을 미곡종합처리장 에서 수매를 기피하게 (RPC) 되고 이는 농업인이 외면하는 상태가 되었다. 그래서 본 연구는 도정률에 영향을 미치는 요인을 분석하여 일품벼의 도정률을 향상시키고, 품종육성 및 재배기술 개발에 기초자료를 제공 하고자 수행하여 얻은 결과를 보고하고자 한다. 1. 이삭당 영화수는 일품벼가 105개, 추청벼가 70개로 일품벼가 35개 많았으며, 지경별로 보면 1차지경의 벼알수 비율은 일품벼 56.2%, 추청벼 61.4%로 추청벼가 많고, 2차지경의 벼알수 비율은 일품벼가 43.3%, 추청벼가 37.9%이었다. 2. 등숙정도를 정조의 비중선에 의하여 분류하면 일품벼가 추청벼보다 충실도가 낮았는데, 일품벼와 추청벼의 차이는 정선 후에 0.47%, 비중 1.00에서 1.28%, 비중 1.10에서 6.27%, 비중 1.20에서 31.67% 낮았다. 3. 왕겨 1개의 무게는 일품벼 4.16 mg, 추청벼 3.92 mg이었으며, 정조 1 kg의 왕겨 무게는 일품벼 157.36 g, 추청벼 151.31 g으로 왕겨비율은 일품벼는 15.74%, 추청벼는 15.13%로 일품벼가 추청벼보다 0.61% 높았다. 4. 도정률은 콤바인 수확 산물벼의 정현비율은 일품벼가 81.22%, 추청벼가 82.52%로 일품벼가 추청벼보다 1.30% 낮았고, 현백비율은 일품벼가 92.14%, 추청벼가 92.51%로 일품벼가 추청벼보다 0.37% 낮았다. 5. 일품벼가 추청벼보다 도정률이 1.67% 낮은데 요인별로 분석 하면 왕겨의 무게 0.61%, 현백비율 0.37% 및 등숙정도 0.69%이다. 이는 왕겨무게와 현백비율은 유전적인 요인으로 극복하기 어렵지만 등숙정도에 영향하는 0.69%는 재배 및 수확 후 관리를 철저히 할 경우 경감시킬 수 있을 것으로 생각된다.

• 한국식품영양과학회지
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• 제40권8호
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• pp.1189-1194
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• 2011

현재 국내에서 판매 유통되고 있는 전통주의 주질 개선을 위해서 양조 전용품종으로 국내에서 처음으로 개발된 설갱벼를 기존 원료 쌀인 추청벼와 비교하여 호화점도(RVA), 알칼리붕괴도(ADV), 경도, 알코올 함량 및 관능검사 등의 품질 특성을 살펴 본 결과, 원료 쌀의 경도는 설갱벼가 2126.6 g/sec로서 추청벼 4056.1 g/sec보다 더 부드러움을 알 수 있었으며 설갱벼가 추청벼에 비하여 알코올 생성속도가 빠르게 나타났고 최종 알코올 함량도 설갱벼가 17.53%로서 추청벼 17.34%에 비하여 다소 높은 수준이었다. 또한 포도당 함량 분석 결과 발효과정 동안 설갱벼가 추청벼에 비하여 발효 초기와 말기만 포도당 함량이 낮게 나타내었다. 전체 유기산 함량은 전 발효기간 동안 설갱벼가 추청벼에 비하여 훨씬 높았으며 관능검사 결과 설갱벼로 제조되어진 전통주는 추청벼로 제조된 전통주에 비하여 쓴맛, 떫은맛 및 느끼한 맛이 적으면서 전체적으로 담백한 맛의 특성을 나타낸 설갱벼는 전통주 양조용으로 우수한 것으로 판단되었다.

• 한국식품영양과학회지
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• 제25권3호
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• pp.497-503
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• 1996

In order to obtain basic data for the preparation of rice flour, chemical properties of grain layers were compared using Chucheongbyeo and Samgangbyeo, which are Japonica and Tongil type rice, respectively. The amylose contents of L6(center) layer in two different type of rice were the highest among 6 layers of rice grain tested. Reduction in amylose content was observed as the layer reached the surface, resulting in the lowest amylose content in the L0 layer. Amylose contents of L6 layer of Chucheongbyeo and Sangangbyeo were 3 and 2.2 times higher than those of L1 layer, respectively. Crude protein content of the L2 layer was the highest among 6 layers of rice grain tested and 2.2~2.5 times higher than that of whole milled rice. Crude fat content of grain layer was reduced as reaching the center layer. The crude fat contents of L6 layer of grain were 0.21% and 0.25% in Chucheongbyeo and Samgangbyeo, respectively. Most of free and bound lipids in L0 layer of two different rices were 69 : 31 and 79.5 : 20.5, respectively. Bound lipid content of grain layers increased as reaching the center layer. Major fatty acids in free lipids of both cultivars were linoleic acid, oleic acid, and palmitic acid. Linoleic acid content was higher than oleic acid in Chucheongbyeo, but oleic acid content was higher in Samgangbyeo. Palmitic and myristic acid contents of Chucheongbyeo were higher than those of Samgangbyeo, but stearic and linolenic acid contents were lower than those of Samgangbyeo.

• 식물조직배양학회지
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• 제27권2호
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• pp.77-82
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• 2000

벼 종자배양에서 식물체 재분화 능력이 서로 다른 품종간에 교배된 잡종집단을 대상으로 캘러스 형성과 식물체 재분화 능력에 대한 유전양식을 구명한 결과는 다음과 같다. '밀양 23호/추청벼', '삼강벼/낙동벼' 및 '밀양 23호/대립벼 1호'조합 F₂집단의 캘러스 생장량에 대한 빈도분포는 3조합 모두 정규분포에 가까운 연속적인 분포양상을 나타내었으며, 각 조합에서 추정된 광의의 유전력은 조합에 따라 83.8%에서 90.1%로 높게 나타났다. 식물체 분화율의 경우 조합에 따라 유전양상이 다르게 나타났는데, '대립벼 1호/밀양 23호' 조합은 F₂집단의 평균 식물체 분화율이 43.6%로 양친의 평균치 보다 높게 나타나면서 빈도분포 면에서 캘러스 생체중과 동일한 양상을 보여 우성으로 작용하는 다수의 유전자에 의해 지배되는 것으로 나타났으며, 식물체 재분화 능력에 대한 광의의 유전력은 83.4%로 높게 추정되었다. 그러나 '밀양 23호 /추청벼' 조합과 '삼강벼/낙동벼' 조합의 경우는 식물체 재분화 능력이 높은 것과 낮은 것이 3 : 1의 이론적 분리비에 적합한 것으로 나타나 '추청벼'와 낙동벼'의 식물체 재분화에는 하나의 우성유전자가 관여하는 것으로 조사되었다.

• 한국토양비료학회지
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• 제23권4호
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• pp.268-274
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• 1990

관개수(灌漑水)의 제한적 공급이 수도(水滔)의 생육(生育) 및 수량(收量)에 미치는 영향을 연구하기 위하여, 관수(灌水)의 공급상태를 담수(湛水)상태(2cm담수), 토양표면으로부터 지하수위 깊이 -17cm, -37cm, -57cm, -77cm, -97cm, -120cm, -145cm로 조절되는 포트에 삼남(三南)벼와 추청(秋晴)벼를 재배하였다. 1. 삼남(三南)벼와 추청(秋晴)벼 모두 담수(湛水)상태에서 재배된 것이 생육 및 수량이 가장 좋았다. 관수의 공급(供給)이 적어질수록 수도(水滔)의 생육 및 수량(收量)이 직선적으로 낮아졌다. 2. 삼남(三南)벼는 추청(秋晴)벼보다 내한성(耐旱性)이 더 강한 것으로 나타났다. 삼남(三南)벼는 지하수위 70cm 이상에서, 추청(秋晴)벼는 50cm 이상에서 수량(收量)에 미치는 생리적 장해(障害)가 심하게 나타나는 것으로 보였다. 3. 담수상태(湛水狀態)의 수도재배(水滔栽培)에서 출수(出穗)가 가장 빨랐고, 관수(灌水)의 공급량이 적어질수록 직선적으로 출수(出穗)시기가 늦어졌다. 삼남(三南)벼는 추청(秋晴)벼보다 평균 10일 정도 출수(出穗)가 빨랐다.

• 한국식품영양학회지
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• 제8권4호
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• pp.301-306
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• 1995

This study was carried out to find out rice quality of Chucheongbyeo cultivated on Gyeonggj and other province. Rice type, color difference, amylograph of milled rice and texturograph of cooked rice were not significant between two cultivated region. And fat, protein, Mg and Ca in milled rice were not significant but p, K and Na were significantly different at l% the level between them as 2, 210~2, 420ppwt 1, 304~1, 538ppm and 212~236ppm in Gyeonggi province cultivated rice, and 2, 130~2, 180ppm, 1, 133~1, 180ppm and 197~217ppm in other province, respectively. Also amylose content, alkali distribution and gel consistency were not significant between them.

• 동아시아식생활학회지
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• 제3권2호
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• pp.139-145
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• 1993

Retrogradation characteristics of the acetylated and raw starch were investigated with the chucheongbyeo and Samkangbyeo. The freeze-thaw stability and syneresis on starch gel were more stable and lower in acetylated rice starch, suggested that the rice starch acetylated with acetyl group is more stable in the various conditions. The retrogradation time constant of acetylated rice starch gel from the Chucheongbyeo and Samkangbyeo which were measured at 5$^{\circ}C$ storage were 11.7 days and 10.2 days, respectively. In addition, the retrogradation time constant in 21$^{\circ}C$ were 50.5 days and 49.8 days, indicating that retrogradation was noticiably retarded in this occation.

• 한국식품영양학회지
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• 제21권4호
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• pp.463-469
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• 2008

To make of basic date for the progressive global brand of Korean rice, we compared with characteristics of Calrose and two Korean rice cultivar, Chucheongbyeo(medium-late maturing cultivar) and Odaebyeo(early-maturing cultivar). General characteristics of rice, pasting property of rice flour by Rapid visco Analyser, determination of optimal ratio of water to rice for cooking by electric and pressure cooker and eating quality(sensory evaluation) of Calrose with that of Korean rice cooked at the optimal cooking conditions were measured. One kernel length of Calrose, Chucheongbyeo and Odaebyeo were 6.00, 4.73 and 5.22 mm, respectively. Calrose showed higher viscosity(195 RVU) in all parameters than Korean rices(Chucheongbyeo 176 RVU, Odaebyeo 178 RVU), of which the values were similar. These data imply that the properties of starch of Calrose may be different from that of Korean rice. In general, it is agreed, in Korea and Japan, that the balance of hardness and stickiness of cooked rice is very important. However, stickiness and overall eating quality for cooked Calrose was significantly poorer than Korean rices. Cooked Calrose did not significantly different in hardness, stickiness and overall eating quality compared with those of Korean rices. Calrose cooked with the ratio of water to rice of 1.4 with electric cooker was less sticky than Korean rices and thus was poorer in eating quality compared with Korean counterparts. Calrose cooked with the ratio of water to rice of 1.3 with pressure cooker had the same eating quality with Korean rices.

• Journal of Crop Science and Biotechnology
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• 제10권3호
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• pp.163-166
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• 2007

Diurnal changes in levels of endogenous gibberellins(GAs) were investigated in three rice cultivars i.e. Sangjubyeo, Shingeumobyeo(photo-neutral) and Chucheongbyeo(photosensitive). The rice cultivars were grown under a 12-hr photoperiod and endogenous GA levels were assayed by gas chromatography-mass spectrometry(GC-MS-SIM) every 3 h for 24 h. The endogenous bioactive $GA_1$ and its immediate precursor $GA_{20}$ contents were significantly different in both photosensitive and photo-neutral rice cultivars, though less pronounced differences were observed for endogenous $GA_{12},\;GA_{53},\;GA_{19}$, and $GA_8$ levels with in the three rice cultivars. The levels of bioactive $GA_1$ and its immediate precursor $GA_{20}$ were significantly higher in Chucheongbyeo than in the other two cultivars. In Chucheongbyeo, the $GA_1$ contents increased significantly from 11.00 to 17.00 o'clock, thus indicating a correlation with light. In Shingeumobyeo, $GA_1$ contents slightly increased during morning hours, while a similar hike in $GA_1$ contents was observed for Sangjubyeo during evening hours. $GA_{19}$ was found to be the most abundant GA form in the three rice cultivars. Our results suggested that GA production in rice depends upon the response potential of rice cultivars and that light positively correlated to GA production in photosensitive rice cultivar.