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TheDistributionofSilicon,Nitrogen,PhosphorusandPotassiuminthe
OrgansofDifferentSilicon-AbsorbingPlants
LIXiao-yan1,2,SUNLi1,2,WULiang-huan1,2*
(1.MinistryofEducationKeyLabofEnvironmentalRemediationandEcosystemHealth,CollegeofEnvironmentalandResourceSciences,
ZhejiangUniversity,Hangzhou310058,China;2.ZhejiangProvincialKeyLaboratoryofSubtropicSoilandPlantNutrition,
CollegeofEnvironmentalandResourceSciences,ZhejiangUniversity,Hangzhou310058,China)
Abstract:Thedistributionofsiliconinorgansofthedifferentplants,andtherelationshipbetweensiliconandplantmacroelements,suchasnitrogen,phosphorusandpotassium,werestudiedonthesiliconphileplantofmaize(ZeamaysL.),non-siliconphileplantsofcucumber(CucumissativusL.),chinesewatermelon(CaulisbenincasaeL.)andtomatoes(SolanumlycopersicumL.),thatdistributedinthedifferentecologicalregionsofZhejiangProvince.Theresultsshowedthatthedistributionofsiliconinthedifferentorgansofmaize,cucumberandChinesewatermelonwereallaccordedwiththelawofterminaldistribution,andthecontentofsiliconfollowedthetrends:leaf,stem>root.Comparedwiththenon-siliconphileplants,thecontentofsiliconinthepartsofroot,stemandleafweresignificantlyincreasedinthesiliconphileplants.Besides,thecontentofsiliconwaslargestinleaf,lowestinseed,androotandstematanintermediateposition,indicatingthatlotsofsiliconmightbeaccumulatedintheleafandstempartsasthedepositedform,whichrestrainedthetransformationofthesilicontotheorgansofgeneration.Comparedwiththeroot,thecontentsofnitrogenandphosphorusintheleafandstembythefourplantsallsignificantlyincreased.Thecontentsofnitrogenandpotassiumindifferentorgansofmaizewerecloselyrelatedwiththecontentofsilicon,followingthetrendofleaf>root>stem.Furthermore,thecontentofsiliconindifferentorgansofsiliconphileplantalsoshowedtheregionaldistribution,andaffectedbysomefactors,suchasenvironment,soilsiliconcontentandsoon.Keywords:Silicon;Macroelements;Distribution;Plant