ANALYSES ON ACTIVITIES AND ISOZYMATIC PATTERNS OF SOD DURING EARLY SOMATIC EMBRYOGENESIS IN LONGAN

The embryogenic cultures at different developmental stages treated with different temperatures were used as materials for analysis on activities and isozymatic patterns of SOD during early somatic embryogenesis in longan. The results showed that during the successive stages of early somatic embryogensis under different temperatures increased SOD activities were detected; it showed temperature treatments had great effects on the SOD activities, and had a great impact on the numbers, the depth and the color of SOD isozyme bands .It might be concluded that SOD plays a key role in the division of early somatic embryogenesis, the removal of reactive oxygen species and facilitating the development of somatic embryogenesis in longan.