第50卷第2期2023年6月福建林业科技JourofFujianForestrySciandTechVol.50No.2Jun.,2023doi:10.13428/j.cnki.fjlk.2023.02.020闽东南黑木相思优良家系早期选择连勇机1,陈元品2,蔡莼莼1(1.福建省泉州罗溪国有林场,福建泉州362015;2.福建省德化葛坑国有林场,福建德化362509)摘要:为了解黑木相思不同家系的生长特性和适应性,于2019—2021年,在福建省泉州市罗溪国有林场,对国内外生长较好的48个黑木相思家系进行子代测定试验,调查分析3年生黑木相思各家系胸径、树高、材积和枝下高等性状。经方差分析,胸径、树高、材积在不同家系间均存在显著差异。遗传参数估算结果表明,家系树高、胸径、材积遗传力分别为0.65、0.54、0.38,各性状受中等的遗传控制。综合选择出5个优良家系(5、27、32、35、44号),家系平均胸径、平均树高、平均单株材积分别为7.4cm、7.4m、0.0191m3,分别比总体平均值提高10.4%、12.3%、31.4%,其生长性状表现良好,具有较高的增益水平,可为闽东南引种黑木相思提供参考。关键词:黑木相思;优良家系;遗传力;早期选择中图分类号:S722.3+3文献标识码:A文章编号:1002-7351(2023)02-0107-05EarlySelectionofExcellentFamiliesofAcaciamelanoxyloninSoutheastFujianLIANYongji1,CHENYuanpin2,CAIChunchun1(1.LuoxiState-OwnedForestFarm,Quanzhou362015,Fujian,China;2.GekengState-OwnedForestFarm,Dehua362509,China,Fujian)Abstract:TostudythegrowthcharacteristicsandadaptabilityofdifferentAcaciamelanoxylonfamilies,weconductedoffspringassaytestson48familiesofAcaciamelanoxylonwithgoodgrowthbothdomesticallyandinternationallyatLuoxiState-OwnedForestFarmfrom2019to2021.Analysisofvariance(ANOVA)andgeneticparameterestimationofdiameterbreast-high(DBH),treeheight,woodvolume,andheighttocrownbase(HCB)ofthree-year-oldAcaciamelanoxylonfamiliesshowedthatthereweresignificantdifferencesamongfamilies.Theheritabilityoftreeheight,DBH,andwoodvolumeare0.65,0.54,and0.38,respectively,andeachtraitwasun-dermoderategeneticcontrol.Fromthem,weselectedfiveexcellentfamilies,andtheaverageDBH,averagetreeheight,andaveragewoodvolumeofthefamilieswere7.4cm,7.4m,and0.0191m3,respectively,whichincreasedby10.4%,12.3%and31.4%.TheexcellentAcaciamelanoxylon...