不同甘薯品种苗期耐盐性试验  

Salt Tolerance Trial of Different Sweet Potato Varieties at Seedling Stage

作　　者：崔纪超[1] 中奕[1] 钟玉扬[1] 余金姜 武小霞 CUI Jichao;ZHONG Yi;ZHONG Yuyang;YU Jinjiang;WU Xiaoxia(Putian Institute of Agricultural Science,Putian 351144,China)

机构地区：[1]莆田市农业科学研究所,福建莆田351144

出　　处：《广东农业科学》2020年第4期1-7,共7页Guangdong Agricultural Sciences

基　　金：莆田市科技计划项目(2017N2002);福建省科技厅引导性(重点)项目(2017N0061)。

摘　　要：【目的】筛选耐盐性较强的甘薯品种。【方法】运用盆栽试验法,用150 mmol/L NaCl溶液对福宁紫3号、福薯604、广薯87、济薯26、龙薯24、龙薯9号和普薯32等7个甘薯品种幼苗进行胁迫处理,对幼苗的生长量、相对生长量、叶面积、植株鲜重、植株干重、植株死亡率、盐害率和盐害指数等指标进行分析评价。【结果】150 mmol/L NaCl胁迫15 d后,7个甘薯品种的生长均受到明显抑制,表现为生长量、相对生长量、叶面积、植株干重和鲜重均极显著下降,其中济薯26幼苗的植株死亡率、盐害率、盐害指数均低于其他6个品种,是受盐胁迫影响最小的品种;而福宁紫3号所有指标均高于其他6个品种,是受盐胁迫影响最大的品种。【结论】综合各项指标,7个甘薯品种耐盐性强弱表现为济薯26﹥福薯604>广薯87>龙薯9号>普薯32>龙薯24﹥福宁紫3号,济薯26、福薯604和广薯87为强耐盐品种,龙薯9号和普薯32为中等耐盐品种,龙薯24和福宁紫3号为弱耐盐品种。【Objective】The study was to select sweet potato varieties with strong salt tolerance.【Method】Seedlings of seven different sweet potato varieties,Funingzi 3,Fushu 604,Guangshu 87,Jishu 26,Longshu 24,Longshu 9 and Pushu32,were exposed to 150 mmol/L NaCl under pot cultivation,to evaluate their salt tolerance.The growth increment,relative growth increment,leaf area,plant fresh weight,plant dry weight,plant death rate,salt injury rate and injury index of seedlings were analyzed and evaluated.【Result】The results showed that,with 150 mmol/L NaCl stress for 15 days,the growth,relatively growth,leaf area,plant dry weight and wet weigh of all the seven varieties decreased significantly.The death rate,the salt injury rate and the salt injury index of Jishu 26 seedlings were significantly lower than those of the other 6 varieties,while all indicators of Funingzi 3 were higher than those of the other 6 varieties.Among the seven varieties,Jishu 26 had the best salt tolerance,while Funingzi 3 had the worst.【Conclusion】In combination with various indicators,the salt tolerance of the seven varieties was showed as:Jishu 26﹥Fushu 604﹥Guangshu 87﹥Longshu 9﹥Pushu32﹥Longshu 24﹥Funingzi 3.According to injury index and actual performance,Jishu 26,Fushu 604 and Guangshu 87 were high salt tolerant varieties,Longshu 9 and Pushu32 were moderate salt tolerant varieties,while Longshu 24 and Funingzi 3 were low salt tolerant varieties.

关 键 词：NACL胁迫 甘薯 苗期 耐盐性 

分 类 号：S531.037[农业科学—作物学]