摘要
本文研究了不同产地栽培稻品种(IR72-菲律宾,Amaroo-澳大利亚,绿黄占3号-广东,特三矮2号-广东)和广东产野生稻(药用野生稻,普通野生稻)在加富CO_2条件下抗氧化能力的变化。结果表明在自然条件下其抗氧化酶活性因品种、产地的不同而存在一定的差异。与普通的空气CO_2浓度(350μl/L)下生长的水稻相比,加富CO_2下(600μl/L)下供试所有水稻品种的膜脂过氧化产物MDA含量和POD活性都有不同程度下降;IR72,特三矮和普通野生稻的SOD活性上升,其它品种的活性下降。Amaroo和普通野生稻的CAT活性上升,其它品种也下降。供试所有品种除野生稻外,叶片可溶性蛋白质含量都下降。
For understanding the changes of antioxidative ability in crop plants under CO2 enrichment , six rice cultivars (Oryza saliva L. ) were grown at two chambers located outdoors and exposed to natural sunlight during the life time, The CO2 concentrations in these two chambers were 350 ul/L (ambient) and 600 ul/L (enriched), respectively, which were adjusted and controlled by a computer. The results indicated that under natural condition, the antioxidative enzyme (SOD, CAT, POD) activities in leaves of rice cultivars differed in different cultivars. In comparison to ambient CO2 control, the content of malondialdehyde (MDA) and POD activity in leaves of Amaroo (obtained from Australia) , IR72 (obtained from Philippine), Luhuangzhan 3, Tesanai 2, O. officinalis and O. spontanea grown in the enriched CO2 chambers decreased to different extents, but the activities of SOD and CAT in these materials showed some variation.
出处
《作物学报》
CAS
CSCD
北大核心
1999年第1期39-43,共5页
Acta Agronomica Sinica
基金
国家自然科学基金(39570071)
广东省自然科学基金(950714)
ACIAR(PN9608)联合资助
关键词
水稻
加富CO2
抗氧化能力
Rice cultivars
CO2 enrichment
Antioxidative ability
