混合盐碱胁迫对藜麦萌发期的影响  

Effects of Complex Salt-alkali Stresses on the Seed Germination of Chenopodium quinoa

作　　者：修妤[1] 梁晓艳[1] 石瑞常[1] 顾寅钰[1] 王向誉[1] 郭光[1] 张凤林[1] 华丽峰[1] Xiu Yu;Liang Xiaoyan;Shi Ruichang;Gu Yinyu;Wang Xiangyu;Guo Guang;Zhang Fenglin;Hua Lifeng(Sericulture Institute, Shandong Academy of Agricultural Sciences, Yantai 264000, China)

机构地区：[1]山东省蚕业研究所,山东烟台264000

出　　处：《山东农业科学》2018年第9期51-55,共5页Shandong Agricultural Sciences

基　　金：山东省农业科学院农业科技创新工程项目"海水农业关键技术"(CXGC2016B10;CXGC2018F6);山东省农业重大应用技术创新项目(201706);中央引导地方科技发展专项资金项目(2017)

摘　　要：为研究混合盐碱胁迫对藜麦种子萌发的影响,将中性盐(Na Cl、Na2SO4)和碱性盐(Na HCO3、Na2CO3)按不同比例混合,按照碱浓度增加的原则设定4个处理组,每组又设5个浓度(25、50、100、150、200mmol·L-1),测定20种混合盐碱胁迫下藜麦种子发芽率、发芽势、胚芽和胚根长等生长指标。结果表明:混合盐碱浓度与发芽势、发芽率呈现负效应,且对发芽势达到极显著负相关(P<0.01);随着盐碱浓度的增加,种子发芽势和发芽率均呈下降趋势,碱性越强,下降幅度越大,且发芽势受浓度影响较大,发芽率受影响不显著,说明藜麦具有较强的适应盐碱的能力。盐碱浓度对于胚芽长和胚根长呈极显著负相关(P<0.01);随浓度增加,胚芽与胚根长呈现不同趋势,胚芽长逐渐减低,胚根长则先增加后降低,并且碱性越大,下降幅度越大。In order to study the effects of complex salt-alkali stresses on seed germination of Chenopodium quinoa, we mixed the neutral salt （NaCl, Na 2SO 4） and basic salt （NaHCO 3, Na 2CO 3） under different scale, and designed four treatment groups according to the principle of the scale of basic salt increasing. Every group had five concentrations （25, 50, 100, 150, 200 mmol·L -1 ）. The germination percentage, germination energy, the length of gemmule and radicle of C. quinoa were measured under the 20 different complex salt- alkali conditions. The results indicated that the complex salt-alkali concentration had negative effects on germination percentage and germination energy, and significantly negatively correlated with germination energy（ P 〈0.01）. The germination percentage and germination energy showed the trends of decreasing with the increase of salt-alkali concentration, and the stronger the alkalinity was, the greater the decrease was. The effect of salt-alkali concentration on germination energy was greater than that on germination percentage. All these indicated that the C. quinoa had higher ability of resisting the complex salt-alkali stress. There was significantly negative correlation between the salt-alkali concentration and the length of gemmule and radicle（ P 〈0.01）. The length of gemmule and radicle showed different trends when the concentration increased. The gemmule length decreased gradually, while the radicle length increased firstly and then decreased, and the greater the alkalinity, the greater the decline.

关 键 词：藜麦 混合盐碱 胁迫 萌发 

分 类 号：S519[农业科学—作物学]