摘要
ThedifferentiationprocessincludingsomaticembryogenesisindifferentGinkgoexplantsinvitroculturewerestudiedbycytologicalobservation.Theresultsareasfollows:1)twocompletecotyledonsandaembryobudwereobservedinmatureembryosandseveralsecretoryacavitivesappearedinmaturationregionofembryobuds,hypocotyls,cotyledonsandradiclesafterculturing20days;twoincompletecotyledonsandaembryobudprimordiawerefoundinlargecotyledonembryos.Theproembryooftwocells,fourcells,multi-cellular,andglobularembroyweredevelopedfromthecallusofthesmallcotyledonembryos.2)Thedifferentiationofcotyledonexplantsstartedfromepidermalcells,andgraduallyformedmeristematiccellmassinthecorticalcells,andeventuallyadventitiousbudswereobserved.3)TheadventitiousrootsofGinkgooriginatedinthecellsatthecrossofvascularcambiumandvascularrays.4)Thetypeofrootingbelongstoinductiontypebyrootprimordium.Theformedadventitiousrootswereobservedafter20days.
出版日期
2012年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
