高产花生品种开农80的耐盐性鉴定及机制解析

打开文本图片集

关键词：花生（Arachis hypogaea）；开农80;高产；耐盐性；赤霉素；脱落酸;基因表达；活性氧

中图分类号：S565.2 文献标识码：A

文章编号：0439-8114（2025）06-0021-07

DOI：10.14088/j.cnki.issn0439-8114.2025.06.005 开放科学（资源服务）标识码（OSID）：[

Identification and mechanism analysis of salt tolerance in high-yield peanut variety Kainong 80

WANGPei-yun 1 ，ZHAOWen-li²，MA Ji⋅1 ，DENGLi ⋅1 ，LIYang1，GUOMin-jie1，SHENWei-guo 1 ，YAOQian 1 ，RENLi （1.KaifengAcademy of Agriculture andForestry，Kaifeng 475OO4，Henan，China; 2.College of Plant Protection，Henan Agricultural University，Zhengzhou 45o046，China）

Abstract：Thesalttoleranceandunderlying molecular mechanisms of thehybrid peanut（Arachis hypogaea）cultivar Kainong 80 weresystematicallinvestigated.Teresultsrevealedthatinregionalyeldtrials，thepodyieldofKainong8Oassignifcantlyhigher thanthatofthecontrolvarietyYuhua9327.Under90mmol/LNaClstressduringgermination，theexpressonofAhNCED1inKainong 80seeds wasmarkedlydownregulated，whiletheexpresionofAhCYP0A1andACY7o7A2wassignificantlyup-regulated，resultinginareductioninabscisicacidcontent.Aditionaly，theexpressionofAhGA2ox wassharplydow-regulated，whereastheexpressionofAhG3oxassignficantlyuregulated，adingtoancreaseinberelinontentonsequentlytegeratioig or，germinationrate，and germinationindexof Kainong 8Oundersaltstress weresignificantlyhigherthanthoseof hecontrolvariety Yuhua9327.Under2OOmmol/LNaClstressattheseedlingstage，comparedwiththecontrolvarietyYuhua9327，theactivityofreactiveoxygenspeciesscavengigenzymesinKainong 80wassignificantlyincreased，andthecontentsofhydrogenperoxideandsuperoxideanionweresignificantlydereased.erefore，thenumberofrotsofKainong8Oseedlingswassignificantlyincreased，thecon tentsof prolieandchlorophllweresignificantlyincreased，whilethecontentofalondialdehdewassignificantlydecreased，and the survival rate was significantly increased.

KeyWords：peanut（Arachishypogaea）；Kainong8O；highyield；salttolerance；gibberelin；abscisicacid；geneexpresion;reactive oxygen species

中国花生产业在油料和经济作物中占有重要地位。（剩余11363字）