摘要
以郑麦1354、周麦27、周麦30、郑麦9023为研究对象,通过培养皿滤纸萌发试验,研究重金属镉(Cd)在不同质量浓度(0 mg/L、5 mg/L、10 mg/L、20 mg/L、50 mg/L、100 mg/L、200 mg/L)下对不同品种小麦种子萌发及幼苗生长的影响。结果表明:郑麦1354的发芽势、发芽率、活力指数、根长和芽长均在Cd胁迫质量浓度为5 mg/L时达最大值;周麦27的发芽势、发芽率、发芽指数和活力指数均随Cd胁迫质量浓度的增加呈先升高后降低的趋势;周麦30和郑麦9023的发芽势和发芽指数均在5~20 mg/L的Cd胁迫质量浓度下低于对照;Cd胁迫质量浓度>50 mg/L时,郑麦9023的根长和芽长均受到显著抑制;隶属函数值综合评价结果显示,4个小麦品种中,周麦27耐Cd性最强,同时具备高发芽率(93%),可作为耐Cd性小麦培育优选品种。
Zhengmai 1354,Zhoumai 27,Zhoumai 30 and Zhengmai 9023 were selected as the research objects,and the effects of Cd with different concentrations(0 mg/L,5 mg/L,10 mg/L,20 mg/L,50 mg/L,100 mg/L,200 mg/L)on seed germination and seedling growth of different wheat varieties were studied by germination experiments of filter paper in culture dishes.The results showed that the germination potential,germination percentage,vigor index,root length and shoot length of Zhengmai 1354 reached the maximum when the concentration of Cd was 5 mg/L;The germination potential,germination percentage,germination index and vigor index of Zhoumai 27 increased at first and then decreased with the increase of Cd stress concentration.Both the germination potential and germination index of Zhoumai 30 and Zhengmai 9023 were lower than those of the control group under Cd stress concentration of 5~20 mg/L,meanwhile,the root length and shoot length of Zhengmai 9023 were significantly inhibited when Cd stress concentration was higher than 50 mg/L.The results of average value of subordinate function indicated that Zhoumai 27 had the highest Cd tolerance and high germination percentage(93%),which could be used as the best cultivar for Cd tolerance wheat.
作者
张珂
高楠
张凌基
刘可欣
厉萌萌
王凯
马闯
张宏忠
ZHANG Ke;GAO Nan;ZHANG Lingji;LIU Kexin;LI Mengmeng;WANG Kai;MA Chuang;ZHANG Hongzhong(College of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China;Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,He′nan Province,Zhengzhou 450001,China;Center International Group Co.,Ltd.,Beijing 100176,China)
出处
《轻工学报》
北大核心
2022年第1期118-126,共9页
Journal of Light Industry
基金
国家自然科学青年基金项目(41801086)。
关键词
镉
小麦
种子萌发
幼苗生长
cadmium
wheat
seed germination
seedling growth
作者简介
张珂(1988—),女,河南省泌阳县人,郑州轻工业大学讲师,博士,主要研究方向为恢复生态学。E-mail:zkecology@163.com。
