Differences of Germination Rate, Degree of Solute Leakage and Water Uptake Rate of Soybean Seeds in Two Storage Periods

저장기간에 따른 콩종실의 발아율이, 용출정도 및 수분흡수율의 차이

This investigation was conducted to investigate if germination rate, degree of solute leakage and water uptake rate of seeds are a meaningful information for the selection criteria among soybean genotypes and to find out their characteristics in the variable temperature and moisture conditions encounted during long-term warehouse storage. Germination rate in soybean sprouting box and petri dish differed largely among genotypes stored for twenty months but there was little difference when stored for eight months. Length of hypocotyl was shorter at twenty months of storage than at eight months. Degree of solute leakage of Paldalkong and Pulmuwon was twice higher than that of SS88038 lines at twenty months of storage. In 30 minutes after imbibition, water uptake rate in all genotypes stored for twenty months was faster than these stored for eight months, and water uptake rate in Paldalkong and Pulmuwon stored for eight months was 1.5 and 2 times faster than in SS88038 lines. In correlation coefficients, the germination ability and emergence exhibited significantly negative correlation with degree of solute leakage at twenty months of storage. Water uptake rate in soybean seeds stored for eight months had highly significant positive correlation with degree of solute leakage in 30 minutes and one hour after imbibition while for twenty months of storage, it had highly significant positive correlation with that in 30 minutes, one hour and three hours after imbibition. In eight months of storage, the number of open micropyle had positive correlation with water uptake rate at 30 minutes after imbibiton. But in seeds stored twenty months, it wasn't correlated with water uptake.

변화하는 환경조건에서 종자의 장기간 저장시발아율, 용출정도 및 수분흡수율을 밝혀서 장기저장 가능한 품종의 선발기준과 그의 특성을 알아보기 위하여 본 실험을 실시하였던 바, 다음과 같은 결과를 얻었다. 1. 콩나물재배기와 petri dish에서의 발아율은 20개월 저장시 품종간의 차이가 컸으며, 8개월 저장에서도 차이가 있었다. 2. 배축의 길이와 두께는 저장기간 간에 유의한 차이가 있었다. 3. 용출정도는 20개월 저장에서 팔달콩과 풀무원이 SS88038계통보다 2배 정도 높았다. 4. 초기 30분의 수분흡수율은 20개월 저장에서는 품종간 차이가 있었으며, 8개월 저장에서는 팔달콩과 풀무원이 SS88038보다 1.5배와 2배 빨랐다. 5. 발아율과 용출정도는 20개월 저장에서 고도로 유의한 부의 상관을 나타내었고, 100립중은 발아율 및 용출정도와 상관이 없었다. 6. 수분흡수율과 용출정도는 8개월 저장에서 침종 30분과 1시간에서 고도로 유의한 정의 상관을 나타내었고, 20개월 저장에서는 침종 30분, 1시간, 3시간에서 고도로 유의한 정의 상관을 나타내었으며, 주공의 열림과 수분흡술율은 상관이 없었다.