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1、基质和激素对无刺枸骨扦插成活率及其生长影响研究初报第34卷第3期2007年6月江苏林业科技JournalofJiangsuForestryScience&TechnologyVo1.34No.3Jun.2007文章编号:1001—7380(2007)03—0005—04基质和激素对无刺枸骨扦插成活率及其生长影响研究初报教忠意,张纪林,李淑琴,董一波(江苏省林业科学研究院,江苏南京211153)摘要:无刺枸骨在5种不同基质中,以及在经用NAA,IAA和IBA等3种激素处理的山黄土中扦插后,对其下端伤口愈合率,生根率,成苗率以及苗高,地径,新梢长,根数量,最大根长,最小根长,根系幅度和鲜重
2、等11个指标进行了研究.结果表明:在3号基质(山黄土与珍珠岩容积比为1:1)中插穗下端伤口愈合率,生根率,成苗率分别为90.67%.85.33%和71.33%,高于其他基质中的插穗,且3号基质中苗高,新梢长,最大根长,最小根长和鲜重等5个指标的平均值也都优于其他几种基质,与对照(砻糠灰)相比,增幅分别为0.18%,55.56%,22.80%,30.00%和13.66%;100mg/LNAA浸泡2h或1000mg/LIBA速蘸5s,能显着提高插穗的下端伤口愈合率,生根率和成苗率.其中,经100mg/LNAA处理过后的插穗,其苗高,新梢长,根系数量,鲜重等指标较对照(清水)增幅分别为18.79%,
3、128.57%.43.90%和14.39%,生长优势最强.关键词:无刺枸骨;扦插;基质;激素;生根率中图分类号:S687.9文献标识码:ATheeffectsofsubstratesandhormonesonthecuttingsurvivalandgrowthofllexcornutavar.fortuneiJIAOZhong—yi,ZHANGJi—lin,LIShu—qin,DongYi—bo(JiangsuAcademyofForestry,Nanjing211153,China)Abstract:Inordertoimprovecuttingpropagationofllexcornu
4、tavat.fortuneiS.Y.Hu,theelevenindexessuchashealingrate,rateofrooting,seedlingrate,seedlingheight,terradiameter,lengthofshoot,rootnumber,maximumrootlength,minimumrootlength,rootsystemamplitudeandfreshweightwerestudiedwiththecuttingsinfivesubstratesandinloesstreatedwiththreehormones(NAA,IAAandIBA).The
5、resultsshowedthatthehealingrate,rateofrootingand~eedlingrateofcuttingswere90.67%,85.33%and71.33%respectivelyinthethirdsubstrate(1oessandperlitevolumeratio1:1).superiortotheothers.Moreover,asforfiveindexes(seedlingheight,lengthofshoot,maximumrootlength,minimumrootlengthandfreshweight),theiraddingampl
6、itudeswere0.18%,55.56%,22.80%,30.00%and13.66%respec—tivelycomparedwiththoseofCK(chaffash).Thehealingrate,rateofrootingandseedlingrateofcuttingsweresignificant—lyelevatedafter100mg/LNAAtreatmentfor2hor1000mg/LIBAdippingfor5s.Theaddingamplitudesoftheseedlingheight,lengthofshoot,rootquantityandfreshwei
7、ghtofthecuttingstreatedwith100mg/LNAAwere18.79%,128.57%,43.90%and14.39%respectively,leadingtothegrowthadvantageofthecuttingsthestrongest.Keywords:llexcornutavar.fortunei;Cutting;Substrate;Hormone;Rate
