干旱锻炼对小麦幼苗期形态指标的影响  

Effect of Drought Priming on Morphological Indices of Wheat Seedlings

作　　者：刘义国[1] 万雪洁 张艳 李玲燕[1] 周宣材 孙新灵 郭卫卫 师长海[1] LIU Yiguo;WAN Xuejie;ZHANG Yan;LI Lingyan;ZHOU Xuancai;SUN Xinling;GUO Weiwei;SHI Changhai(College of Agronomy of Qingdao Agricultural University,Qingdao Shandong 266109,China;Yanzhou District Bureau of Agriculture and Rural Affairs,Yunzhou Shandong 272100,China)

机构地区：[1]青岛农业大学农学院,山东青岛266109 [2]济宁市兖州区农业农村局,山东兖州272100

出　　处：《西北农业学报》2022年第2期157-163,共7页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：山东省农业重大应用技术创新项目(SD2019ZZ003);山东省重点研发计划(2019GNC106012);青岛市民生科技计划项目(19-6-1-70-nsh);山东省高等学校青创科技支持计划(2019KJF013);青岛农业大学高层次人才科研基金(6631114308)。

摘　　要：为了探讨干旱锻炼对小麦幼苗期形态指标的影响,对经过干旱锻炼的小麦在不同程度干旱胁迫下小麦的苗高、苗鲜质量、叶相对含水量、叶干质量以及叶绿素含量等形态指标进行动态研究。结果表明,与对照相比,经过干旱锻炼的小麦幼苗在干旱胁迫条件下的苗高、苗鲜质量和叶干质量都相对较高,叶片的相对含水量减少程度显著降低。叶绿素含量均呈现先升高后降低的趋势,但在较低胁迫下经过干旱锻炼的叶片叶绿素含量降低较少。由此得出小麦幼苗期干旱锻炼能显著提高小麦的耐旱性。In order to study the effect of drought priming on wheat seedling morphological indexes,the dynamic changes of seedling height,fresh mass,leaf water content,leaf dry mass,chlorophyll content and other wheat morphological indexes were studied after drought priming under different degrees of drought stress.The results showed that,compared with control group,the seedling height,fresh mass and leaf dry mass of wheat seedlings after drought priming were relatively higher under drought stress,the decrease of relative leaf water content was significantly lower under drought stress.In all treatments,the chlorophyll content was firstly increased and then decreased with the increase of stress days.Under low drought stress,the leaves chlorophyll content of drought priming wheat seedling decreased less than other treatments.Therefore,drought priming at the seedling stage of wheat can significantly improve wheat drought tolerance.

关 键 词：小麦 干旱锻炼 干旱胁迫 幼苗形态指标 

分 类 号：S512.1[农业科学—作物学]