硒氮互作对燕麦籽粒氨基酸组成与营养价值的影响

打开文本图片集

关键词：硒氮互作；燕麦；氨基酸组成；氨基酸营养评价；限制性氨基酸 中图分类号：S512.6 文献标识码：A 文章编号：1671-8151（2025）04-0088-14

productionofSe-suficientoats with higherproteincontentand superioraminoacid profiles.Methods]Using theoatcultivar ‘ Jinyan 19⋅ as the test material，a field experiment employedarandomized block design in 2O22 and 2O23.Treatments included control group（CK，no fertilization），Se 150g/hm2） ，N 240kg/hm2 ），and Se+N （Se： 150g/hm2 N：240kg/hm2 ） Grainproteinandaminoacidcompositionwereanalyzedatdiferentpost-anthesis stagestodetermineaccumulationpaternsunder different fertilization treatments.[Results]Compared to CK， Se+N co-application increased grain protein content by 18.9%～24.7% and total amino acid content by 8.5%～48.9% ，outperforming individual N or Se treatments. Among l6 detectedaminoacids，allexcept tyrosineshowed highesttwo-yearaverageconcentrationsunderSe+N，followedbyNapplicationalone.SoleSeaplicationonly increased valine，tyrosine，and cystinelevels.Nutritionalevaluation indicated thatSe+N treatmentproducedaminoacidratios closer toidealproteinstandards，enhancedratioanalysisofaminoacids（RAA）score for multiple esential amino acids，and increased EssentialAmino Acid Index（EAAI）from O.45toO.66（Year1）and O.68 to 0.75（Year 2），surpassing individual treatments. This demonstrates that the Se+N co-application improved the amino acid composition inoat grainsmore efectivelythan single-element treatments.[Conclusion]Compared single SeorNaplication， Se+Ntreatmentbeterenhanced grainproteincontent andaminoacidaccumulation，particularlypromoting thecontentoflimit ingamino acids such as lysine，effectivelyoptimizing the amino acid composition and protein nutritional valueof Jinyan 19′ oat grains， suggesting that Se+N co-application represents an effective agronomic strategy for quality-oriented oat production.

Keywords：Selenium-ntrogeninteractions，Oats，Aminoacidcomposition，Aminoacid nutritional evaluation，Limtingaino acids

燕麦（AvenasatiuaL.）是一种富含膳食纤维、亚油酸与 β- 葡聚糖等功能性成分的重要杂粮作物，具有降低人体血浆胆固醇水平、防止粥动脉硬化等多方面的健康功效2。（剩余26413字）