밤 품종(品種)에 따른 적정선량(適正線量)을 구하고 조사(照射)밤의 저장말기(貯藏末期)에 발생(發生)하는 과육흑반점(果肉黑斑點) 억제(抑制)에 대한 실험(實驗)을 하여 다음과 같은 결과(結果)를 얻었다. 1. 대기하(大氣下)에서 방사선(放射線)을 조사(照射)할 경우 밤의 발근(發根), 발아율(發芽率), 부패율(腐敗率) 및 과육흑반점(果肉黑斑點) 발생율(發生率)을 고려(考慮)할 때, 품종(品種)에 따라 약간의 차이는 있으나 적정선량(適正線量)은 $25{sim}35Krad$였다. 2. 저산소상태(低酸素狀態)에서의 방사선조사(放射線照射)는 부패(腐敗), 과육흑반점(果肉黑斑點) 발생을 현저하게 억제(抑制)할 뿐 아니라 15Krad로서도 발아억제효과(發芽抑制效果)가 현저하였다. 3. 저장중(貯藏中)인 밤의 품종(品種)별 화학성분(化學成分)의 큰 변화는 없고 저장기간(貯藏期間)에 따라 감소하는 경향이었으며, 방사선조사(放射線照射)로 인한 영양소(營養素)의 변화가 뚜렷하지 않았다. 4. 호흡(呼吸)은 방사선조사(放射線照射) 직후(直後)에 급격(急激)히 상승(上昇)하였으나 시일이 경과함에 따라 점차 정상화(政常化)되었다.
Experiments were carried out to determine the optimum dose for the preservability of each Korean chestnut varieties by means of gamma-radiation. They were associated with control of spots in the edible portion of chestnut due to irradiation at the final stage of storage. With this result the following summary can be made. 1. In consideration of those factors such as rooting, sprouting, rotting and undesirable spots on the flesh, it was shown that the optimum radiation dose was checked to be 25-35 Krad though there are some difference among the varieties of chestnut. 2. Rotting and the spots on the flesh of chestnut were remarkably inhibited by low oxygen atmosphere during irradiation. This condition greatly contributed to inhibit sprouting with the low radiation dose(15 Krad). 3. The nuts irradiated had a marked increase in carbon dioxide evolution immediately after the irradiation. However on the day succeding the treatment, these increased curves gradually normalized as same as that of untreated.
