摘要
以3年生的银杏幼树为实验材料,经过淹水处理后,测定不同时间银杏叶片内主要生化指标——丙二醛(M DA)、游离脯氨酸(PRO)、可溶性糖以及超氧化物歧化酶(SOD)含量的变化.结果表明:淹水后的前9天,银杏叶片丙二醛含量无明显变化,第10天,其M DA含量显著增加,达到18.7μm o l/g,比对照M DA含量(7.2μm o l/g)增加1倍多;淹水后第8天,银杏叶片游离脯氨酸(PRO)含量显著增高,达到101.4μg/g,为对照的2倍多;随着淹水时间的延长,银杏叶片可溶性糖的含量逐渐增加,第9天达到32.9 m g/g,随后维持在较高水平上;在淹水后前几天,SOD的活性增加较快,第5天,SOD活性达到最高值854.6 U/g,第6天开始下降,到第11天时,其活性为78.8 U/g,远远低于对照组.
A careful analysis was made of the variation of the main biochemistry index, such as MDA, PRO and dissolved sugars, of 3 year-old Ginkgo under flooding stress. The results show that compared to the contrast, the content of MDA in the leaves of Ginkgo did not vary obviously under flooding stress in 9 days; that being 18, 7μmol/g, it changed at the tenth day compared to the contrast, being 7.2μmol/g; that the content of PRO in the leaves of Ginkgo was obviously increased compared to the contrast at the eighth day after flooding stress; that the content of dissolved sugars in the leaves of Ginkgo was becoming more, reaching 32.9 mg/g at the ninth day; and that the activity of SOD in 5 days under flooding stress increased quickly to 854. 6 U/g, then it dropped at the sixth, to 78, 8 U/g at the eleventh, being much lower than that of the contrast.
出处
《中南林学院学报》
CSCD
北大核心
2005年第4期78-80,85,共4页
Journal of Central South Forestry University
基金
国家自然科学基金"银杏EST文库的构建与黄酮基因的克隆"的部分内容(编号:30471417).
