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ABA浸种对混合苏打盐碱胁迫下苜蓿种子萌发受阻的缓解作用
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  • 英文篇名:The Relieving Effects on Germination Blocked of Medicago sativa Seed under Soda Saline-Alkali Stress of Soak Seed in ABA
  • 作者:李波 ; 邬婷婷 ; 李红 ; 杨曌 ; 林浩
  • 英文作者:LI Bo;WU Ting-ting;LI Hong;YANG Zhao;LIN Hao;College of Agriculture,Forestry and Life Sciences,Qiqihar University,Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas;Institute of Animal Husbandry and Veterinary of Heilongjiang academy of Agricultural sciences;
  • 关键词:苜蓿 ; 苏打盐碱胁迫 ; 种子萌发 ; 脱落酸(ABA) ; 缓解作用 ; 隶属函数
  • 英文关键词:Alfalfa;;Soda saline-alkali stress;;Seed germination;;Abscisic acid;;Relieving effects;;Membership function
  • 中文刊名:草地学报
  • 英文刊名:Acta Agrestia Sinica
  • 机构:齐齐哈尔大学生命科学与农林学院抗性基因工程与寒地生物多样性保护黑龙江省重点实验室;黑龙江省农业科学院畜牧兽医分院;
  • 出版日期:2019-09-15
  • 出版单位:草地学报
  • 年:2019
  • 期:05
  • 基金:黑龙江省应用技术研究与开发计划重大项目(GA18B104,GA19B103);; 黑龙江省省属高等学校基本科研业务费科研项目(135209267,YSTSXK201886);; 齐齐哈尔市科技计划项目(NYGG-201916);; 2019年黑龙江省大学生创新创业训练计划资助项目(201910232095);; 现代农业产业技术体系建设专项资金(CARS-34)资助
  • 语种:中文;
  • 页:128-133
  • 页数:6
  • CN:11-3362/S
  • ISSN:1007-0435
  • 分类号:S541.9
摘要
本研究以WL343HQ和龙牧807苜蓿(Medicago sativa L.)品种种子为试验材料,对其种子进行20,25,30,35,40,45,50,55和60mmol·L~(-1)苏打盐碱胁迫和25,50,75和100μmol·L~(-1)脱落酸(Abscisic acid,ABA)缓解处理,测定了不同苏打盐碱浓度对苜蓿种子发芽率和ABA缓解苏打盐碱胁迫对苜蓿种子萌发指标的影响。结果表明:2种苜蓿种子发芽率均随苏打盐碱胁迫浓度增加呈下降趋势,ABA缓解WL343HQ和龙牧807苏打盐碱胁迫浓度分别为40mmol·L~(-1)和35mmol·L~(-1),WL343HQ抗苏打盐碱能力高于龙牧807;随ABA浓度的增加,2种苜蓿种子的发芽率、发芽势、发芽指数、活力指数和芽苗的胚芽长、胚根长、鲜重、干重均呈先升后降趋势。不同ABA浓度对苏打盐碱胁迫下的紫花苜蓿种子萌发均产生一定的缓解作用,特别是ABA浓度为75μmol·L~(-1)时缓解作用最明显。本研究结果可为苏打盐渍化土壤苜蓿种植提供一定参考。
        In this study,the seeds of WL343 HQ and Longmu 807 alfalfa(Medicago sativa L.)were treated with20,25,30,35,40,45,50,55 and 60 mmol·L~(-1) soda saline-alkali and 25,50,75 and 100μmol·L~(-1) Abscisic acid.The effects of different doses of soda saline-alkali on germination rate of alfalfa seed and ABA relieving of soda saline-alkali stress on germination index of alfalfa seed were determined.The results showed that the germination rate of two alfalfa decreased with the increase of soda saline-alkali concentration.ABA relieved the stress of WL343 HQ and Longmu 807 induced by soda saline-alkali at 40 and 35 mmol·L~(-1).WL343 HQ was more resistance to soda saline-alkali when compared with Longmu 807;With the increase of ABA concentration,the germination rate,germination potential,germination index,vigor index,embrgo length,radicle length,fresh weight and dry weight of two alfalfa seeds increased first and then decreased.ABA,especially at the concentration of 75μmol·L~(-1),relieved the stress of germination of alfalfa seeds induced by soda saline-alkali.This study provides a reference for alfalfa planting in soda salinized soil.
引文
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