33份引进花生资源表型遗传多样性分析及在粤西地区的适应性初步评价徐志军吴小丽胡小文刘洋---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除------本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---摘要：為了解引进花生资源的遗传多样性和适应性，筛选可用于广东地区花生遗传改良的优异资源和高产品种，本研究对33份从国内收集的花生资源进行表型鉴定和在粤西地区的适应性初步评价。结果表明：13个农艺和产量性状的平均变异系数范围为4.80%～30.80%，13个性状的平均遗传多样性指数范围为2.52～2.90，遗传多样性丰富。相关分析表明，多数性状间的相关关系在2019年春、秋两个环境保持一致，部分性状间的相关性受环境因素影响。聚类分析可将33份资源划分为4个类群。主成分分析中，前3个因子累计贡献率为82.19%，可以反映表型性状的绝大部分信息。通过表型性状综合评价筛选出10份综合排名超过全部本地对照品种的资源。适应性评价表明引种后种子长、百果重、百果仁重、百仁重和出仁率5个性状出现极显著下降，其中‘花育23在2019年秋季的表现优于引种前，其余资源在这些性状上均有不同程度的下降;引进资源对早斑病和晚斑病抗性较弱，多数表现为感病;丛枝病发病鉴定表明共有19份资源感病，14份资源未见发病。研究结果可为引进资源在广东地区的利用和品种选育提供重要参考。关键词：花生;引种;遗传多样性;综合评价;适应性中图分类号：S565.2文献标识码：APhenotypicDiversityof33IntroducedPeanutGermplasmAccessionsandPreliminaryAdaptabilityEvaluationinWestGuangdongXUZhijun1，WUXiaoli2，HUXiaowen1，LIUYang1*1.ZhanjiangExperimentStation，ChineseAcademyofTropicalAgriculturalSciences/SouthSubtropicalCropResearchInstitute，ChineseAcademyofTropicalAgriculturalSciences/GuangdongEngineeringTechnologyResearchCenterforDrylandWater-savingAgriculture，Zhanjiang，Guangdong524091，China;2.ZhanjiangAcademyofAgriculturalSciences，Zhanjiang，Guangdong524094，ChinaAbstract：Thephenotypicdiversityandadaptabilityof33introducedpeanut（Arachishypogaea）germplasmaccessionswereevaluatedinthisstudy，aimingtounderstandandutilizethegermplasmaccessionsinGuangdong.Theresultrevealedthatthemeancoefficientofvariationof13agronomicandyieldrelatedtraitsrangedfrom4.80%to30.80%andthemeandiversityindexrangedfrom2.52to2.90，indicatingtheintroducedgermplasmmaintainedabundantgeneticdiversity.Correlationanalysisshowedthatthecorrelationshipbetweenmosttraitskeptstableinthes---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---pringandautumnofyear2019，whilethecorrelationshipbetweensometraitswasinstabilityandaffectedbyenvironmentalfactors.The33introducedpeanutgermplasmaccessionsweredividedintofourgroupsbyclusteranalysis.Thefirstthreeprincipalcomponentsexplained82.19%ofthephenotypicvariation，reflectingmostinformationofthe13traits.Tengermplasmaccessionswerefoundtoexcelthe5localcontrolcultivarsthroughcomprehensiveevaluationofphenotypictraits.Seedlength，weightof100pods，weightofseedsin100pods，weightof100seedsandshellpercentageweresignificantlydecreasedafterintroduced.And‘Huayu23wasbetterbeforeintroducedinautumnofyear2019，whiletheremaingermplasmaccessionsshoweddifferentdegreeofdeclineinthefivetraits.Theresistanceoftheintroducedgermplasmswaspoortoearlyandlateleafspotandmostofthemweresusceptible.Therewere19germplasminfectedpeanutwitches-Broom，while14germplasmwerenotinfectedthroughfieldinvestigation.TheseresultswouldprovideimportantreferenceforutilizingtheintroducedgermplasmaccessionstobreednewpeanutcutivarsinGuangdong.Keywords：peanut;varietyintroduced;geneticdiver...