| 外源抗坏血酸引发促进Na_2SO_4胁迫下燕麦幼苗的生长 |
| |
| 引用本文： | 董秋丽,夏方山,丁荷星,王明亚,朱慧森,董宽虎,赵祥,杜利霞.外源抗坏血酸引发促进Na_2SO_4胁迫下燕麦幼苗的生长[J].草业科学,2018,35(3):558-565. |
| |
| 作者姓名： | 董秋丽 夏方山 丁荷星 王明亚 朱慧森 董宽虎 赵祥 杜利霞 |
| |
| 作者单位： | 山西农业大学林学院,山西太谷,030801;山西农业大学动物科技学院,山西太谷,030801;中国农业大学动物科技学院草业科学北京市重点实验室,北京,100193 |
| |
| 基金项目： | 国家自然科学基金“燕麦劣变种子线粒体AsA-GSH循环抗氧化机制与差异蛋白表达”，山西省自然科学基金“老化燕麦种胚细胞应答抗坏血酸引发的蛋白质组学机理研究” |
| |
| 摘 要： | 通过不同浓度(0、0.5、1.0、1.5和2.0 mmol·L-1)的抗坏血酸(As A)引发燕麦(Avena sativa)种子,并在浓度为0、50和100 mmol·L-1的Na2SO4胁迫下进行标准发芽,分析其幼苗芽长(LS)、根长(LR)、芽鲜重(FWS)、根鲜重(FWR)及幼苗活力指数(SVI)的变化,探讨了外源As A引发对Na2SO4胁迫下燕麦幼苗生长的影响。结果表明,燕麦幼苗LS、LR、FWS和SVI随Na2SO4胁迫程度增强而显著(P<0.05)降低,但其FWR则呈先升后降的趋势。As A引发处理能提高其LS、LR、FWS、FWR和SVI,这表明As A引发能够提高Na2SO4胁迫下燕麦幼苗的生长能力。Na2SO4与As A浓度对燕麦LS、LR、FWS、FWR和SVI的影响差异极显著(P<0.01),二者的交互作用对燕麦幼苗LS、LR、FWS和FWR的影响也有极显著(P<0.01)差异,因而表明As A引发效果与As A和Na2SO4浓度及其交互作用具有密切关系,试验中As A引发的最佳浓度为1.5 mmol·L-1。
|
| 关 键 词： | 抗坏血酸 种子引发 燕麦 种子活力 盐胁迫 幼苗生长 NA2SO4 |
Exogenous ascorbic acid priming promoted oats seedling growth under Na2SO4 stress |
| |
| Dong Qiu-li,Xia Fang-shan,Ding He-xing,Wang Ming-ya,Zhu Hui-sen,Dong Kuan-hu,Zhao Xiang,Du Li-xia.Exogenous ascorbic acid priming promoted oats seedling growth under Na2SO4 stress[J].Pratacultural Science,2018,35(3):558-565. |
| |
| Authors: | Dong Qiu-li Xia Fang-shan Ding He-xing Wang Ming-ya Zhu Hui-sen Dong Kuan-hu Zhao Xiang Du Li-xia |
| |
| Abstract: | This study aimed to explore the effect of exogenous ascorbic acid on oats seedling growth under Na2SO4 stress.Oats (Avena sativa) seeds were primed by incubation in different concentrations of ascorbic acid (0,0.5,1.0,1.5 and 2.0 mmol · L-1),prior to germination under increasing concentrations of Na2SO4 (0,50 and 100 mmol · L-1).Changes in shoot length (SL),root length (RL),shoot fresh weight (SFW),root fresh weight (RFW),and seedling vigor index (SVI),were analyzed.Results showed that SL,RL,SFW and SVI of oats seedlings significantly (P＜0.05) decreased with increasing Na2SO4 stress.On the other hand,RFW first increased and then decreased.Nevertheless,all variables increased upon AsA priming;this indicated that oats seedling growth was improved by AsA priming prior to Na2SO4 stress.The effects of Na2SO4 and AsA concentration,as well as their interaction (except for SVI),on all parameters under study were highly significant (P＜0.01).This indicated that the effects of AsA priming were closely related to the concentrations of AsA and Na2SO4,and their interaction.In this study,priming with AsA at 1.5 mmol · L-1 effectively promoted oats seedling growth under Na2SO4 stress. |
| |
| Keywords: | ascorbic acid seed priming oat seed vigor salt stress seedling growth Na2SO4 |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
