벼 품종의 관수저항성 관련 특성을 검토코자 24일묘를 3일간 관수처리하여 뿌리와 엽신의 POD 비활성도 및 POD 동위효소들을 PAGIF법으로 전기영동하여 본 결과 관수저항성이 상대적으로 약한 일본형품종들은 통일형이나 인도형품종들보다 POD 비활성도가 높았으며 또한 관수처리로 일본형품종들의 엽신부에서는 무관수시 어느 부위에서도 나타나지 않았던 POD 동위효소의 특이 band가 등전점 9부근에서 출현하였다.

This study was carried out to know the physiological characteristics related to flooding tolerance of rice plants. Peroxidase specific activities and banding pattern of peroxidase isozyme of 24 days old seedlings were analyzed after 3 days of flooding treatment in the artificial flooding tank. Peroxidase activities of japonica rice varieties which were relatively susceptible to submergence were higher in comparison to those of Tongil and indica rice varieties. And a peculier band of peroxidase isozyme which was not shown in any part of rice plant if not flooded, was appeared at the around 9 of isoelectric point in the leaf blade of japonica rice varieties when flooded.

• 姜良淳(맥류연구소) | 강양순
• 南玟熙(영남작물시험장) | 남민희