摘要
进行了水分胁迫及复水过程中斑茅和甘蔗活性氧代谢和渗透调节变化的研究。结果表明,随着水分胁迫程度的提高,斑茅丙二醛(MDA)含量提高幅度低于拔地拉,但超氧化物歧化酶(SOD)、过氧化物酶(POD)比活性较高,同工酶谱带较强(SODb1、SODb2和PODa1)且明显不同于拔地拉,而且其在严重胁迫后复水出现与拔地拉相同的新的诱导谱带PODb2。过氧化氢酶(CAT)比活性分析结果还表明,拔地拉在水分胁迫下,比活性明显下降,而斑茅则里上升趋势。
Changes of osmotic adjustment and active oxygen metabolism of Erithanus arundinaceum and Sacchanun offieinarum (cv. Badila) under water stress were studied. The results indicated that the increment of MDA in Erithanus arundinaceum was less than that in S. offieinarum with the water stress. On the contrary, the specific activities of SOD and POD were both obviously higher than those in Badila. The isozymes (SODb1, SODb2 and PODa1) of Erianthus arundinaceum were stronger and obviously different from those of Badila. In addition, a new isozyme (PODb2), the same as in Badila, was induced in Erianthus arundinaceum when re-watered after severe water stress. The results also showed that CAT specific activity declined rapidly in Badila but increased in Erianthus arundinaceum after water stress, suggesting that Erianthus arundinaceum was more adaptive to water stress and that the drought resistance gene could be cloned from Erianthus arundinaceum.
出处
《热带作物学报》
CSCD
2004年第2期50-54,共5页
Chinese Journal of Tropical Crops
基金
国家"863"计划课题糖料新品种选育(2001AA241191)
国家自然科学基金(30170590)
