不同品系甘薯对外源有机硒富集能力比较  

Different Strains of Sweet Potato:Comparison of Accumulation Ability of Exogenous Organic Selenium

作　　者：张小红 鄢铮 魏广彪 ZHANG Xiaohong;YAN Zheng;WEI Guangbiao(Fuzhou Institute of Agricultural Sciences,Fuzhou 350018)

机构地区：[1]福州市农业科学研究所,福州350018

出　　处：《中国农学通报》2025年第8期31-38,共8页Chinese Agricultural Science Bulletin

基　　金：福建省科技厅引导性项目“植物生理实验平台提升与应用”(2019N0037)。

摘　　要：为探讨不同品系甘薯对外源有机硒富集能力的差异,以22个福州市农业科学研究所自主选育的优良甘薯品系为试材,以富硒能力强的‘广薯87’为对照品种,通过叶面喷施外源有机硒肥,开展硒富集能力比较试验。结果表明:(1)对不同硒肥处理的甘薯薯块硒含量进行聚类分析结果显示,高富集和中高富集类型的品系包括‘榕薯2306’、‘榕薯2321’、‘榕薯2310’、‘榕薯2305’、‘榕薯2322’等9个品系,其中‘榕薯2306’、‘榕薯2301’、‘广薯87’、‘榕薯2315’、‘榕薯2321’的薯块硒含量增幅居前5位。(2)硒肥处理的不同品系甘薯小区薯块硒累积量存在差异,前5位的品系包括‘榕薯2306’、‘广薯87’、‘榕薯2315’、‘榕薯2301’和‘榕薯2310’;不同品系甘薯薯块的硒吸收利用率差异较大,吸收利用率5%以上的品系为‘榕薯2306’,吸收利用率3%以上的品系包括‘榕薯2301’、‘榕薯2315’、‘广薯87’、‘榕薯2321’、‘榕薯2310’等。(3)不同品系甘薯的硒敏感性聚类分析结果显示,‘榕薯2306’、‘榕薯2315’、‘榕薯2301’对硒的敏感性较强,硒敏感指数介于0.89~0.91之间,硒肥处理比对照增产9.82%~12.48%。综上,‘榕薯2306’、‘榕薯2301’、‘榕薯2315’具有较强的富硒能力和较高的鲜薯产量,适宜作为富硒甘薯种植品种和选育富硒甘薯新品种的亲本材料。In order to explore the difference of selenium enrichment ability of different sweet potato strains,22 excellent sweet potato strains independently selected by Fuzhou Institute of Agricultural Sciences were used as test materials,and‘Guangshu 87’with strong selenium enrichment ability was used as the control variety.22 independently bred sweet potato strains were selected as materials,and‘Guangshu 87’was used as the control variety.The comparative experiment of selenium enrichment ability was carried out by spraying exogenous organic selenium fertilizer on the leaves.The results showed that:(1)Cluster analysis of selenium content in sweet potato tubers of different strains treated with selenium fertilizer showed that the strains with high enrichment and medium high enrichment types included nine strains such as‘Rongshu 2306’,‘Rongshu 2321’,‘Rongshu 2310’,‘Rongshu 2305’,‘Rongshu 2322’and so on.‘Rongshu 2306’,‘Rongshu 2301’,‘Guangshu 87’,‘Rongshu 2315’and‘Rongshu 2321’ranked the top five in the increase rate of selenium content in tubers compared with the control.(2)There were differences in selenium accumulation of sweet potato tubers among different strains treated with selenium fertilizer.The top five strains included‘Rongshu 2306’,‘Guangshu 87’,‘Rongshu 2315’,‘Rongshu 2301’and‘Rongshu 2310’.The selenium absorption and utilization rates of different strains of sweet potato tubers were quite different.The strain with absorption and utilization rates of more than 5%was‘Rongshu 2306’,and the strains with absorption and utilization rates of more than 3%included‘Rongshu 2301’,‘Rongshu 2315’,‘Guangshu 87’,‘Rongshu 2321’,‘Rongshu 2310’and so on.(3)Cluster analysis of selenium sensitivity of different sweet potato strains showed that‘Rongshu 2306’,‘Rongshu 2315’and‘Rongshu 2301’were more sensitive to selenium.The selenium sensitivity index was between 0.89 and 0.91,and the yield increase rate of selenium fertilizer tr

关 键 词：甘薯 有机硒 硒肥 富集 聚类分析 硒敏感指数 

分 类 号：S531[农业科学—作物学]