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1、第33卷第12期中南林業(yè)科技大學(xué)學(xué)報(bào)Vbl_33No.122013年12月JournalofCentralSouthUniversityofForestry&TechnologyDec.2013不同生根劑濃度與基質(zhì)種類對(duì)南方紅豆杉插條生根的影響曹基武,劉春林,吳毅,黎恢安。,尹大軍,伍細(xì)蓮,吳林世,胥雯(1.中南林業(yè)科技大學(xué),湖南長(zhǎng)沙410004;2.良山珍稀植物研究所,湖南新寧422700)摘要:為滿足人們對(duì)南方紅豆杉苗木的需求,對(duì)南方紅豆杉的扦插繁殖技術(shù)進(jìn)行研究,即采用不同種類和濃度的生長(zhǎng)素激素及不種類的扦插基質(zhì)對(duì)南方紅豆杉扦插繁植技術(shù)進(jìn)行研究,結(jié)果表明:經(jīng)處理后插穗的各項(xiàng)生根指
2、標(biāo)都得到了顯著提高,以吲哚丁酸鉀鹽8g&g(液態(tài))+荷爾蒙頓38g/kg(固態(tài))處理10s,效果為最佳,平均生根率達(dá)87.63%,平均根體積達(dá)38.87cm,根數(shù)和根長(zhǎng)均達(dá)最大值;不同扦插基質(zhì)比較,以種植在以70%河沙:30%黃心土的基質(zhì)為最優(yōu)配方,平均生根數(shù)為21.67條,生根率高達(dá)72.22%,生根數(shù)和生根率均達(dá)最大值。關(guān)鍵詞:南方紅豆杉;生長(zhǎng)激素;扦插基質(zhì);生根率中圖分類號(hào):$791.49文獻(xiàn)標(biāo)志碼:A文章編號(hào):1673.923X(2013)12—0010.05Effectsofdifferentrootingagentconcentrationanddifferentsubs
3、tratetypesoncuttingsrootingofTaxuswallichianavar.marireiCAOJi—wu,LIUChun—lin,WUYi,LIHuian2,YINDa-jun,WUXi—lian,WULin—shi,XUWen(1.CentralSouthUniversityofForestryandTechnology,Changsha410004,Hunan,China;2.LangshanAcademyofValuableandRarePlants,Xinning422700,Hunan,China)Abstract:Inordertomeetthed
4、emandsforTaxuswallichianavar.marireiseedlings,thecuttingpropagationtechnologyofwallichianavatmarirewasstudiedbyapplyingdiferenttypesofcuttingmatrixandconcentrationsofhormoneauxincultivatedindiferentcuttingmedium.Theresultsshowthattheeveryrootingindexesofthecu~ingswereimprovedsignificantlyaftert
5、reated,forexample,thecuttingsweretreatedwithindolebutyricacidpotassiumsalt8gCkg(1iquidstate)+hormoneDayton38g/kg(solidstate)for10seconds,theefectwastheoptimal,theaveragerootingratewas87.63%andtheaveragerootvolumereached38.87cm,therootingnumberandrootinglengthalsoreachedtheirmaximumvalues;whenco
6、mparingdiferentcuaingmatrix,theoptimumformulationwasacombinationof70%sandand30%yellowsoilmatrix,resultinganaveragerootingnumberof21.67andarootingrateof72.22%,therootingnumberandrootingratebothreachedthemaximum.Keywords:Taxuswallichianavar.marirei;growthhormone;cuttingmatrix;rootingrate南方紅豆杉Taxu
7、swallichianavat.marirei是紅南方紅豆杉存活率、繁殖方式及育種方法方面的豆杉科紅豆杉屬植物,富含紫杉醇且樹(shù)形優(yōu)美,研究則較少,且對(duì)南方紅豆杉扦插育苗的研究[1叫材質(zhì)堅(jiān)硬細(xì)致、顏色美觀,屬稀有珍貴樹(shù)種。本甚少。南方紅豆杉具重要經(jīng)濟(jì)價(jià)值,然而其母樹(shù)種分布較廣,甘肅南部至廣東、云南及臺(tái)灣,所數(shù)量稀少,且種子繁殖成苗時(shí)間長(zhǎng),變異率大的跨省區(qū)都有分布,在山地森林中常為群落的伴生問(wèn)題未能攻克;探求簡(jiǎn)便易行、經(jīng)濟(jì)快速的扦插種,很少形成南方紅豆杉單優(yōu)群