摘要
以春玉米区常用品种郑单958为材料,研究了维大力浸种对低温胁迫下玉米种子萌发、玉米幼苗生长、叶片生理生化指标和根系活力的影响。结果表明,维大力不同浓度浸种能显著促进低温胁迫下玉米种子的萌发,促进植株生长,在2.0 g/L的处理浓度下效果最明显,发芽率比对照高13.95%,发芽指数比对照高86.63%;维大力浸种能够显著提高低温胁迫后玉米叶片叶绿素含量、脯氨酸和丙二醛含量,提高根系活力。胁迫后14 d,维大力各处理叶片叶绿素含量逐渐恢复,2.0 g/L处理可恢复至胁迫前水平,叶绿素含量比对照高90.24%,对照恢复较慢;胁迫后14 d,维大力处理的各叶片脯氨酸和丙二醛含量下降;胁迫后14 d,维大力各处理根系活力逐渐恢复,2.0 g/L处理根系活力比对照高162.5%。研究表明,合适剂量的维大力浸种处理可以显著促进玉米种子萌发和幼苗生长。
Using the common variety Zhendan 958 in spring maize area,the effect of VDAL seed-soaking on seed germination,seedling growth,physiological and biochemical parameters and root activity of maize under low temperature stress.The results showed that different concentrations of VDAL could significantly promote seed germination and plant growth under low temperature stress.At the concentration of 2.0g/L,the effect was most obvious,the germination rate and germination index were 13.95%and 86.63%higher than those of the control.VDAL seed soaking could increase chlorophyll content,proline and malondialdehyde content in maize leaves,and improve root activity after low temperature stress.After 14 days stress,the chlorophyll content of treatment treated with VDAL gradually recovered,and the treatment of 2.0 g/L could recover to the pre-stress level,while the control recovered more slowly,the chlorophyll content of 2.0 g/L treatment was 90.24%higher than that of the control.After 14 days stress,the contents of proline and malondialdehyde decreased in leaves treated with vitamin VDAL,the root activity treated with VDAL gradually recovered,the root activity of 2.0 g/L treatment was 162.5%higher than that of the control.The study showed that the seed germination and seedling growth of maize could be significantly promoted by a suitable dose of VDAL seed-soaking.
作者
卢海博
谢世兴
张佳琪
赵冰欣
王明杰
张付强
刘松涛
赵海超
黄智鸿
LU Haibo;XIE Shixing;ZHANG Jiaqi;ZHAO Bingxin;WANG Mingjie;ZHANG Fuqiang;LIU Songtao;ZHAO Haichao;HUANG Zhihong(Hebei North University,Hebei Key Laboratory of Quality&Safety Analysis-Testing forAgro-Products and Food,Zhangjiakou Hebei 075000,China;Beijing Pherobio Technology Co.Ltd.,Beijing 101100,China)
出处
《种子》
北大核心
2023年第5期86-90,共5页
Seed
基金
河北省现代农业产业技术体系(玉米体系岗位专家)(HBCT 2018020203)
张家口市科学技术局项目(1911012 C)。
关键词
维大力
玉米
生理生化指标
根系活力
VDAL
maize
physiological and biochemical indexes
root activity
