杂交甜高粱的钠离子累积特性研究  

Na^(+) accumulation characteristics in a hybrid sweet sorghum variety

作　　者：蒋博 王琦[2] 李文建[3] 吴跃进 董喜存[3] 杨阳[1,2] JIANG Bo;WANG Qi;LI Wenjian;WU Yuejin;DONG Xicun;YANG Yang(Institute of Physical Science and Information Technology,Anhui University,Hefei,Anhui 230039,China;Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei,Anhui 230031,China;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China)

机构地区：[1]安徽大学物质科学与信息技术研究院,安徽合肥230039 [2]中国科学院合肥物质科学研究院,安徽合肥230031 [3]中国科学院近代物理研究所,甘肃兰州730000

出　　处：《干旱地区农业研究》2021年第5期59-65,共7页Agricultural Research in the Arid Areas

基　　金：中国科学院合肥物质科学研究院院长基金融合专项(YZJJZX202020);国家重点研发计划(2017YFD0301302);中国科学院科技服务网络计划(STS)区域重点项目(KFJ-STS-QYZD-008)。

摘　　要：以甜高粱‘BJ0603’(杂交品种)和‘623B’(常规对照)为供试作物,在盆栽和田间条件下分别设置轻度(0.9 g·kg^(-1)NaCl)、中度(2.9 g·kg^(-1)NaCl)和重度盐胁迫(4.9 g·kg^(-1)和6.9 g·kg^(-1)NaCl)处理,分析甜高粱的Na^(+)累积特性。结果表明,随盐胁迫水平由0.9 g·kg^(-1)提高到6.9 g·kg^(-1),‘623B’植株Na^(+)浓度由0.395 g·kg^(-1)提高到1.104 g·kg^(-1),‘BJ0603’植株Na^(+)浓度由0.321 g·kg^(-1)提高到0.759 g·kg^(-1)。相同盐胁迫水平下,‘BJ0603’植株Na^(+)浓度比对照‘623B’降低4.1%~44.5%,而其生物学产量比对照‘623B’提高73.5%~193.8%(P<0.05);不同程度盐胁迫下,‘BJ0603’的根系Na^(+)浓度比叶片、叶鞘和茎秆Na^(+)浓度分别提高46.9%~346.2%、104.3%~461.3%和51.6%~156.3%。与非胁迫(0.9 g·kg^(-1))相比,轻度盐胁迫下‘623B’和‘BJ0603’的生物学产量分别提高38.0%和24.5%(P<0.05);而进一步提高盐胁迫水平至6.9 g·kg^(-1),‘623B’和‘BJ0603’的生物学产量分别降低56.1%和31.0%。随盐胁迫水平的提高,对照‘623B’的根系干物质量逐渐下降(由22.67 g·plant^(-1)降为9.26 g·plant^(-1)),而‘BJ0603’并无明显下降趋势。盐胁迫下杂交甜高粱‘BJ0603’具有更高的生物学产量和Na^(+)富集能力,适于在盐渍化地区种植及促进盐渍化土壤生物修复。In this study,sweet sorghum varieties‘BJ0603’(a hybrid)and‘623B’(the control)were used as test crops,and different salt stress treatments were set under pot and field conditions during 2020 to analyze the Na^(+)accumulation characteristics in the sweet sorghum varieties.The results showed that,as salt stress increased from 0.9 g·kg^(-1)to 6.9 g·kg^(-1),the plant Na^(+)concentration in‘623B’increased from 0.395 g·kg^(-1)to 1.104 g·kg^(-1),while the plant Na^(+)concentration in‘BJ0603’increased from 0.321 g·kg^(-1)to 0.759 g·kg^(-1).Under the same salt stress level,the plant Na^(+)concentration in‘BJ0603’was 4.1%~44.5%which was lower than that in‘623B’.The biomass of‘BJ0603’was 73.5%~193.8%higher than that of‘623B’(P<0.05).Under different salt stresses,the root Na^(+)concentrations in‘BJ0603’were 46.9%~346.2%,104.3%~461.3%,and 51.6%~156.3%higher than the leaf,leaf sheath,and stem Na^(+)concentrations,respectively.Compared with non-stress(0.9 g·kg^(-1)),light salt stress(1.5 g·kg^(-1))increased the biomass of‘623B’and‘BJ0603’by 38.0%and 24.5%,respectively(P<0.05).Further increasing in salt stress(to 6.9 g·kg^(-1))reduced the biomass of‘623B’and‘BJ0603’by 56.1%and 31.0%,respectively.As the salt stress levels increased,the root dry matter mass of‘623B’gradually decreased from 22.67 g·plant^(-1)to 9.26 g·plant^(-1),while that of‘BJ0603’showed no significant decline.Under salt stress,hybrid sweet sorghum variety‘BJ0603’had higher biomass and Na^(+)enrichment capacity,and thus it was suitable for popularization in salinized areas and promoting the bioremediation of saline soils.

关 键 词：NACL胁迫 杂交甜高粱 Na^(+)浓度 Na^(+)吸收量 生物量 

分 类 号：S514[农业科学—作物学] Q945.78[生物学—植物学]