亚硒酸钠对壶瓶碎米荠生长的影响  

Effects of sodium selenite on the growth of Cardamine hupingshanensis

作　　者：麦淑华 杨珖 仇曙 李亚男[3] 陈大清 MAI Shu-hua;YANG Guang;QIU Shu;LI Ya-nan;CHEN Da-qing(College of Horticulture and Landscape Architecture,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;College of Agriculture and Biology,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;College of Agriculture,Yangtze University,Jingzhou 434000,Hubei,China)

机构地区：[1]仲恺农业工程学院园艺园林学院,广州510225 [2]仲恺农业工程学院农业与生物学院,广州510225 [3]长江大学农学院,湖北荆州434000

出　　处：《湖北农业科学》2022年第5期32-35,共4页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(31560579);广东省科技计划项目(2015A030302081);广东省教育厅人才引进项目(粤财教2010343号);广东省技术质量监督局项目(粤财农[2017]66号)。

摘　　要：研究不同浓度亚硒酸钠对壶瓶碎米荠(Cardamine hupingshanensis)生长的影响,以探讨壶瓶碎米荠对亚硒酸钠胁迫的响应。结果表明,0~30 mg/L亚硒酸钠范围内,壶瓶碎米荠的发芽率、成苗率及根长明显提高,并在30 mg/L时达最大值。亚硒酸钠浓度大于50 mg/L时,壶瓶碎米荠幼苗黄化率随亚硒酸钠浓度的提高而提高。在40 mg/L亚硒酸钠处理下,壶瓶碎米荠的株高及生长量均达最大值。与对照相比,低浓度亚硒酸钠显著提高了壶瓶碎米荠的生物量。壶瓶碎米荠的CAT活性总体呈先上升后下降的趋势,并在150 mg/L亚硒酸钠处理下达最高值;POD活性呈先下降后上升的趋势,在400 mg/L亚硒酸钠处理下达最高值。The effects of different concentrations of sodium selenite on growth of Cardamine hupingshanensis were studied to explore the response of C.hupingshanensis to sodium selenite stress.The results showed that within the concentration range of 0~30 mg/L sodium selenite,the germination rate,seedling rate and root length of C.hupingshanensis plants were obviously improved,and reached the maximum at 30 mg/L sodium selenite.When the concentration of sodium selenite was higher than 50 mg/L,the rate of C.hupingshanensis etiolation seedlings increased with the increase of sodium selenite concentration.Under the treatment of 40 mg/L sodium selenite,the C.hupingshanensis plant height and growth reached the maximum.Low concentration sodium selenite significantly increased the biomass of C.hupingshanensis compared with the control.The CAT activity of C.hupingshanensis showed an overall trend of first increasing and then decreasing,and reached the highest value at 150 mg/L sodium selenite.POD activity showed a trend of first declining and then increasing,reaching the maximum value at 400 mg/L sodium selenite.

关 键 词：亚硒酸钠 壶瓶碎米荠(Cardamine hupingshanensis) 生长发育 抗氧化酶 

分 类 号：S312[农业科学—作物栽培与耕作技术] S647[农业科学—农艺学]