Tobacco seeds (Nicotiana tabacum L. cv KF109) were primed in the polyethylene glycol 6000(PEG) solution and then stored at 5 and 25~circC under 40, 60 and 80% relative humidity (RH) conditions for six months. The effect of storage temperature and humidity on mean germination time (T50 ), longevity and germination of the primed tobacco seeds were compared. Untreated seeds (control) stored at 5~circC showed high germinability throughout the entire storage period and humidity, and a decline in germinability showed after 6 months at 60% RH and after 3 months at 80% RH when stored at 25~circC , Primed seeds retained high germinability until 6 months at 60% RH and 3 months at 80% RH when stored at 5~circC but showed a significant decline in germinability after 3 months at 40% RH, and 1 months at 60% and 80% RH, respectively when stored at 25~circC , Primed seeds were completely lost viability when stored at 25~circC under 60% RH for 6 months and under 80% RH for 3 months.

저장실험용 과실로 사과와 배를 경남 거창군 및 하동군 지역의 재배농가에서 저장실험 당일 직접 구입하여 사용하였다. 구입즉시, 습도가 70%(저장온도 ), 80%(저장온도 1) 및 90%(저장온도 5)로 유지되고 있는 정온실에 보관하면서 처리기간별로 채취하여 품질 변화를 측정하였다. 실험결과, 저장습도 90%(저장온도 5)조건하에서 사과와 배를 저장할 경우, 중량손실율이 최소가 되었으며, ascorbic acid의 감소율을 크게 줄일 수 있었고,

온도 및 습도 변화에 따른 라이너원지의 압축강도 열화를 측정한 결과 압축강도는 온도변화에 영향이 없는 것으로 나타났다. 습도변화의 경우 66% RH에서는 IK원지의 강도저하가 가장 낮은 것으로 나타났다. 93% RH에서는 KA원지의 강도저하가 40%로 가장 낮았으며 SK원지가 56%로 가장 높게 나타났다. 비압축강도의 경우 66% RH에서는 SC 마니라와 IK 원지가, 93% RH에서는 IK원지와 KA원지가 가장 우수하였다. 원 단위 압축강도에서

Chestnuts(Castanea cretana, Eunki) were used for quality evaluations from the physiological and physicochemical points of view during storage under different temperatures and relative humidities for 8 months. Quality criteria included spouting, rotting, weight loss, and the changes in moisture, total sugar, reducing sugar, and total vitamin C of the stored sample. Sprouts(roots) were developed in about 2 months in all stored samples which had been mixed with sawdust(50% moisture) and stored under the conditions of 2∼25 and 62∼95% RH. The sprout development was more significant in the storage temperature of Pit(96, 805% RH, PT)and room(167, 8510% RH, RT) than low(31%, 805% RH, LT)and ambient(1411, 675% RH, AT). The rates of rotting and weight loss were appreciable in the order of PT, AT, RT and LT, and those of LT were 1∼2%. The use of wet sawdusts resulted in the increase of moisture contents in stored samples, thereby causing the rotting phenomena. Some chemical components of stored samples were found liable to the changes according to storage conditions, that is; total sugars showed a decreasing tendency along with a temporary increase during storage, and both reducing sugar and vitamin C were similarly accumulated in the samples stored at low temperature conditions. The results indicated that long-term storage of chestnuts will be possible in either cases of the application of low temperature following sprout-inhibition treatment or the use of lower temperature than 0 to suppress its sprouting during storage.

Potatoes, Irish cobbler, were subject to quality evaluation from the physiological and physicochemical points of view during storage under different temperatures and relative humidities for 11 months. Quality criteria were sprouting, rotting, weight changes, moisture, total sugar, reducing sugar and vitamin C. Low temperature condition(LT, 2∼4, 80% RH) was enough to preserve Potatoes for 11 months, but it was indicated to be limitations that the increase in reducig sugar as well as sprouting by about 3.3 to 6.7% occurred from the 3rd month of storage. Meanwhile, pit temperature(PT, 3∼15, 75∼85% RH), room temperature(RT, 7∼17, 80∼95% RH) and ambient temperature(AT, 2∼25, 62∼72 RH) were shown infeasible conditions for the storage of potatoes mainly due to the increase In sprouting-rate and subsequent quality-loss after 3 months of storage. Based on the results, it proposed that more economical conditions, ranging 10 to 15 and about 80% RH following sprout inhibition treatment should be used for the long-term storage of potatoes.

Br, 21을 공시하여 급건엽이 발생하는 환경조건을 구명하기 위하여 온습도를 시험 I과 II로 구분하여 시험 I은 주간의 온습도를 달리하고 야간은 휴건하였으며, 시험 II는 황변 이후에 주야간 동일한 온습도를 건조상 내에서 각기 달리 조사하여 처리하였던 바 그 결과를 요약하면 다음과 같다. 1. 급건엽발생은 고온 저습에 의해 과도한 탈수로 발생되었다. 2. 야간은 휴건하고 주간은 습도 75~80%일 때35℃ 이하에서는 급건엽이 거의 기생되지 않았다. 3. 주야간 온습도가 일정할 경우 30℃ 는 75~80%, 35℃ 는 80~85%, 40℃ 는 85~90%로 온도가 상승할수록 습도를 더 높여야 급건엽이 발생되지 않았다. 4. 급건엽발생이 많을 수록 물리성이 불량하였고, 내용성분이 충분히 분해되지 않았다.