[Objectives]This study aimed to explore the effect of different concentrations of selenium fertilizer on the yield,selenium content and heavy metal contents of waxy maize,thereby providing reference for the scientific...[Objectives]This study aimed to explore the effect of different concentrations of selenium fertilizer on the yield,selenium content and heavy metal contents of waxy maize,thereby providing reference for the scientific application of selenium fertilizer on waxy maize.[Methods]Different varieties of waxy maize(Guitiannuo 611,Guinuo 615 and Guiheinuo 609)were used as test materials.They were sprayed with different concentrations(0,0.5,1.0,1.5 and 2.0 g/L)of water-soluble selenium fertilizer(Xinxibao)at the big flare stage,and the effect on the yield,selenium content and heavy metal contents of the waxy maize was analyzed.[Results]Foliar application of different concentrations of selenium fertilizer showed no significant effect on the yield and yield components of waxy maize.As the concentration of selenium fertilizer increased,the grain selenium content of different varieties of waxy maize increased.Among them,the increase of Guinuo 615 was the largest,of which the selenium content reached 0.265 mg/kg,2.82 times that of the control(water).The cadmium and arsenic contents of different varieties of waxy maize decreased with the increase of the concentration of selenium fertilizer sprayed.Among the waxy maize varieties,the cadmium and arsenic contents of Guitiannuo 611 dropped the most significantly,up to 52.94%and 77.78%.In waxy maize,the correlation coefficients between selenium content and cadmium,arsenic contents were-0.5509(P<0.05)and-0.8530(P<0.01),respectively.[Conclusions]Spraying exogenous selenium fertilizer had no obvious effect on the yield of waxy maize.However,the increase of the concentration of exogenous selenium fertilizer could significantly increase the selenium content and reduce the cadmium and arsenic contents in grains of different varieties of waxy maize.展开更多
For a long time, milk vetch has been an important green manure crop to provide fertilizer source for rice in rice planting areas, especially in nitrogen fixation and selenium enrichment. In order to better realize the...For a long time, milk vetch has been an important green manure crop to provide fertilizer source for rice in rice planting areas, especially in nitrogen fixation and selenium enrichment. In order to better realize the important value of milk vetch as a green manure crop, further optimize the planting strategy of green manure crops and improve the utilization efficiency. It is necessary to explore the specific effects of milk vetch on selenium content and yield of rice. This experiment is based on this theme. The final results show that the absorption capacity of selenium by milk vetch in paddy field is significantly stronger than that of rice. In order to ensure the selenium content of rice, trace selenium element (exogenous) can be applied to rice, and the yield of rice can also be effectively improved.展开更多
Objective To compare selenium content in hair samples of people in Kaschin-Beck disease(KBD)areas and non KBD areas two months after stopping selenium salt in Shaanxi Province,to provide a scientific basis for KBD con...Objective To compare selenium content in hair samples of people in Kaschin-Beck disease(KBD)areas and non KBD areas two months after stopping selenium salt in Shaanxi Province,to provide a scientific basis for KBD control and prevention.Methods In September2012,four historical KBD areas were selected,including Yongshou,Yuyang,Linyou and Nanzheng,four展开更多
Selenium is one of the essential trace elements in human body,however,due to the limitation of geographic factors,the intake of selenium is seriously insufficient in most regions.In this study,selenium-enriched peanut...Selenium is one of the essential trace elements in human body,however,due to the limitation of geographic factors,the intake of selenium is seriously insufficient in most regions.In this study,selenium-enriched peanut sprouts with high selenium content were prepared by soaking peanut seeds in sodium selenite.The content and distribution of selenium in germinated peanuts were investigated.The results showed that 200μmol/L sodium selenite and germination for 6 days resulted in the highest total selenium,organic selenium content,and organic selenium conversion in peanut sprouts.Selenium exists in peanut sprouts mainly in organic selenium form,of which selenoproteins are the most critical organic selenium carriers.ABTS free radical scavenging capacity and reducing power assays showed that alkali-soluble protein had the highest antioxidant activity among the four soluble proteins,attributed to its high selenium binding level.Radicle and cotyledons of peanut seedlings were significantly enriched with selenium compared to hypocotyl.Amino acid analysis and SDS-PAGE results showed that selenium increases significantly after peanut germination and selenium enrichment.This study provides a simple,environmentally friendly,and effective way of selenium enrichment and offers a theoretical basis for applying selenium-enriched foods in food and medicine.展开更多
硒作为人体必需微量元素,在抗氧化、心血管保护、免疫增强及癌症预防等生理功能中具有关键作用。针对我国72%土壤缺硒的现状,通过作物施硒转化为有机硒是安全经济的补硒途径。本研究系统评估施硒对水稻、小麦、玉米的增产提质效应,为科...硒作为人体必需微量元素,在抗氧化、心血管保护、免疫增强及癌症预防等生理功能中具有关键作用。针对我国72%土壤缺硒的现状,通过作物施硒转化为有机硒是安全经济的补硒途径。本研究系统评估施硒对水稻、小麦、玉米的增产提质效应,为科学施硒提供理论依据。研究收集2013—2024年中国知网、维普、万方、Web of Science及PubMed数据库中134篇田间试验文献,以“硒”“小麦/玉米/水稻”“产量”为关键词,采用响应比自然对数(lnR)作为效应值进行Meta分析,借助Microsoft Office、Get Data Graph Digitizer、MetaWin 2.1等软件处理数据。施硒总体使水稻、小麦、玉米增产5.41%(95%CI:4.74%—6.08%,PQ0.05),其中玉米最显著,效应值为8.90%(95%CI:4.45%—9.17%)。不同作物在施硒方式、地区和土壤硒含量等因素影响下表现各异。施硒对三种作物产量、硒含量、淀粉和蛋白质含量均有较大影响,是提升作物品质和产量的有效手段,但需依作物种类、地区和土壤条件优化施硒策略,保障人体硒营养摄入和农业优质高产。展开更多
基金Key Research and Development Project of Guangxi(Gui Ke AB18221056)Guangxi Innovative Team Building Project in Earmarked Fund for China Agriculture Research System(nycytxgxcxtd-04-02)Special Fund for Innovation-driven Development in Guangxi(Gui Ke AA17204064)。
摘要[Objectives]This study aimed to explore the effect of different concentrations of selenium fertilizer on the yield,selenium content and heavy metal contents of waxy maize,thereby providing reference for the scientific application of selenium fertilizer on waxy maize.[Methods]Different varieties of waxy maize(Guitiannuo 611,Guinuo 615 and Guiheinuo 609)were used as test materials.They were sprayed with different concentrations(0,0.5,1.0,1.5 and 2.0 g/L)of water-soluble selenium fertilizer(Xinxibao)at the big flare stage,and the effect on the yield,selenium content and heavy metal contents of the waxy maize was analyzed.[Results]Foliar application of different concentrations of selenium fertilizer showed no significant effect on the yield and yield components of waxy maize.As the concentration of selenium fertilizer increased,the grain selenium content of different varieties of waxy maize increased.Among them,the increase of Guinuo 615 was the largest,of which the selenium content reached 0.265 mg/kg,2.82 times that of the control(water).The cadmium and arsenic contents of different varieties of waxy maize decreased with the increase of the concentration of selenium fertilizer sprayed.Among the waxy maize varieties,the cadmium and arsenic contents of Guitiannuo 611 dropped the most significantly,up to 52.94%and 77.78%.In waxy maize,the correlation coefficients between selenium content and cadmium,arsenic contents were-0.5509(P<0.05)and-0.8530(P<0.01),respectively.[Conclusions]Spraying exogenous selenium fertilizer had no obvious effect on the yield of waxy maize.However,the increase of the concentration of exogenous selenium fertilizer could significantly increase the selenium content and reduce the cadmium and arsenic contents in grains of different varieties of waxy maize.
摘要For a long time, milk vetch has been an important green manure crop to provide fertilizer source for rice in rice planting areas, especially in nitrogen fixation and selenium enrichment. In order to better realize the important value of milk vetch as a green manure crop, further optimize the planting strategy of green manure crops and improve the utilization efficiency. It is necessary to explore the specific effects of milk vetch on selenium content and yield of rice. This experiment is based on this theme. The final results show that the absorption capacity of selenium by milk vetch in paddy field is significantly stronger than that of rice. In order to ensure the selenium content of rice, trace selenium element (exogenous) can be applied to rice, and the yield of rice can also be effectively improved.
摘要Objective To compare selenium content in hair samples of people in Kaschin-Beck disease(KBD)areas and non KBD areas two months after stopping selenium salt in Shaanxi Province,to provide a scientific basis for KBD control and prevention.Methods In September2012,four historical KBD areas were selected,including Yongshou,Yuyang,Linyou and Nanzheng,four
基金supported by the National Natural Science Foundation of China[32172259]Key Research and Development Project of Henan Province[231111111800]+1 种基金Innovative Funds Plan of Henan University of Technology [2021ZKCJ03]The Program for the Top Young Talents of Henan Associate for Science and Technology.
摘要Selenium is one of the essential trace elements in human body,however,due to the limitation of geographic factors,the intake of selenium is seriously insufficient in most regions.In this study,selenium-enriched peanut sprouts with high selenium content were prepared by soaking peanut seeds in sodium selenite.The content and distribution of selenium in germinated peanuts were investigated.The results showed that 200μmol/L sodium selenite and germination for 6 days resulted in the highest total selenium,organic selenium content,and organic selenium conversion in peanut sprouts.Selenium exists in peanut sprouts mainly in organic selenium form,of which selenoproteins are the most critical organic selenium carriers.ABTS free radical scavenging capacity and reducing power assays showed that alkali-soluble protein had the highest antioxidant activity among the four soluble proteins,attributed to its high selenium binding level.Radicle and cotyledons of peanut seedlings were significantly enriched with selenium compared to hypocotyl.Amino acid analysis and SDS-PAGE results showed that selenium increases significantly after peanut germination and selenium enrichment.This study provides a simple,environmentally friendly,and effective way of selenium enrichment and offers a theoretical basis for applying selenium-enriched foods in food and medicine.
摘要硒作为人体必需微量元素,在抗氧化、心血管保护、免疫增强及癌症预防等生理功能中具有关键作用。针对我国72%土壤缺硒的现状,通过作物施硒转化为有机硒是安全经济的补硒途径。本研究系统评估施硒对水稻、小麦、玉米的增产提质效应,为科学施硒提供理论依据。研究收集2013—2024年中国知网、维普、万方、Web of Science及PubMed数据库中134篇田间试验文献,以“硒”“小麦/玉米/水稻”“产量”为关键词,采用响应比自然对数(lnR)作为效应值进行Meta分析,借助Microsoft Office、Get Data Graph Digitizer、MetaWin 2.1等软件处理数据。施硒总体使水稻、小麦、玉米增产5.41%(95%CI:4.74%—6.08%,PQ0.05),其中玉米最显著,效应值为8.90%(95%CI:4.45%—9.17%)。不同作物在施硒方式、地区和土壤硒含量等因素影响下表现各异。施硒对三种作物产量、硒含量、淀粉和蛋白质含量均有较大影响,是提升作物品质和产量的有效手段,但需依作物种类、地区和土壤条件优化施硒策略,保障人体硒营养摄入和农业优质高产。