[1]李昕,高洪儒,赵北平.低温和盐复合胁迫对玉米种子生理生化指标的影响[J].黑龙江农业科学,2016,(07):19-24.[doi:10.11942/j.issn1002-2767.2016.07.0019]
　LI Xin,GAO Hong-ru,ZHAO Bei-ping.Effect of Combined Low Temperature and Salt Stress on Physiological and Biochemical Characteristics of Maize Seedling[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(07):19-24.[doi:10.11942/j.issn1002-2767.2016.07.0019]
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低温和盐复合胁迫对玉米种子生理生化指标的影响

《黑龙江农业科学》[ISSN:1002-2767/CN:23-1204/S] 卷: 期数: 2016年07 页码: 19-24 栏目: 出版日期: 2016-07-10
Title:
Effect of Combined Low Temperature and Salt Stress on Physiological and Biochemical Characteristics of Maize Seedling
文章编号:
1002-2767（2016）07-0019-05
作者:
李昕; 高洪儒; 赵北平
(黑龙江省农业科学院 五常水稻研究所，黑龙江 哈尔滨 150000)
Author(s):
LI Xin; GAO Hong-ru; ZHAO Bei-ping
(Wuchang Rice Institute of Heilongjiang Academy of Agriculture Sciences,Harbin,Heilongjiang 150086)
关键词:
玉米; 低温; 盐; 复合胁迫
Keywords:
maize;  low temperature;  salt;  combined stress
分类号:
S513.01
DOI:
10.11942/j.issn1002-2767.2016.07.0019
文献标志码:
A
摘要:
为探究复合胁迫对玉米种子生长的影响,以玉米杂交种郑单958为试验材料,研究了低温及盐胁迫两重逆境对玉米种子表型指标、膜损伤及抗氧化系统等指标的影响。结果表明：低温、盐胁迫单一及复合逆境均导致玉米胚根长、芽长、胚芽鲜重下降,其中盐胁迫对玉米胚芽鲜重影响不显著，复合胁迫的各指标降低幅度较大;与CK相比,各胁迫处理均不同程度地提高了胚芽的相对电导率和TBARS的含量,其中复合胁迫下玉米胚芽膜损伤较单一胁迫大;同时,低温、盐胁迫单一及复合逆境均不同程度地增加了胚芽SOD、CAT、APX的活性,低温盐复合胁迫下玉米抗氧化酶上升幅度最大,其次是低温处理。说明低温及盐胁迫复合处理下的玉米种子的响应机制与单一逆境下有所差异,复合逆境处理引起的玉米种子生长抑制较单一胁迫更为明显。
Abstract:
In order to study the response mechanism of physiological and biochemical characteristics in maize seedings,taking Zhengdan 958 as material,and the effect of low temperature and salt stress was studied.The results showed that shoot length,root length,and fresh weights of maize seeding decreased clearly under single low temperature,salt stress or combined stress,and superoxide dismutase (SOD),catalase (CAT),ascorbate peroxidase (APX) activity,the relative electrolytic leakage and TBARS content of maize embryo increased in different degree under different stress treatments.At low temperature 5 ℃,the scorbate peroxidase (APX) activity decreased slowly,and the relative electrolytic leakage increased firstly and then decreased slowly,but the TBARS content increased constantly with the increasing salinity,moreover,the deleterious effect of combined stress on membrane damage was more severe than the single stress.

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备注/Memo

收稿日期：2016-05-04

第一作者简介：李昕（1989-），男，黑龙江省宾县人，硕士，研究实习员，从事作物遗传育种研究。E-mail: henrytomli@126.com。

更新日期/Last Update: 2016-12-12