摘要
为探究国外引进鲁梅克斯杂交酸模(Rumex patientia×R.tianschanicus cv.Rumex)对环境胁迫的适应性,以Na Cl为渗透介质模拟盐胁迫,对国外(材料1)和国内(材料2)两个不同来源鲁梅克斯的萌发率及幼苗期抗逆生理指标进行测定分析。结果表明,在不同浓度(0、50、100、150、200、250、300 mmol·L-1)Na Cl处理7 d后,材料1的萌发率明显高于材料2。在150 mmol·L-1Na Cl处理7、9、11、13和15 d后,材料1中超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性和过氧化氢酶(CAT)活性均显著高于(P<0.05)材料2,但丙二醛(MDA)含量却显著低于(P<0.05)材料2。表明材料1耐盐性强于材料2,更适于在盐渍土地上推广种植。
In order to analyze the tolerance of imported Rumex( Rumex patientia × R.tianschanicus cv.Rumex)to salt stress,the germination rate and seedling physiological characteristics of Rumex grown in media with Na Cl were studied.The imported Rumex from Ukraine was marked as Material 1,and the native one as control was marked as Material 2.The performance of Material 1 and Material 2 were measured under different concentrations of Na Cl( 0,50,100,150,200,250 and 300 mmol·L- 1).The results showed that the germination rate of Material1 was significantly higher than that of Material 2( P < 0.05) after 7 days growth in stress.Furthermore,after being treated with 150 mmol·L- 1Na Cl for 7,9,11,13 and 15 d,the superoxide dismutase,peroxidase and catalase activities in Material 1 were significantly higher than those in Material 2( P < 0.05) whereas the MDA content in Material 1 was significantly lower than that in Material 2( P < 0.05).These results suggested that Material 1,the imported Rumex from Russia,had a higher salt tolerance than Material 2.Material 1 was an excellent breeding material for saline soil.
出处
《草业科学》
CAS
CSCD
北大核心
2015年第3期400-405,共6页
Pratacultural Science
基金
国家国际科技合作项目--耐寒种兔及饲草的引进创新及产业化联合开发(2013DFR30270)
