Page 20 - 《华农农业大学学报》2020年第4期

１
华 中 农 业 大 学 学 报 第 ３９ 卷
４
２３６Ｇ２４３ ( inChinesewithEn g lishabstract ) ． Q , GAOYN , etal．Reviewonthemechanismsoftheres p onse
[ ２５ ]王佺珍, 刘倩, 高娅妮, 等 ． 植物对盐碱胁迫的响应机制研究进 tosalinit y Ｇalkalinit ystressinp lants [ J ] ．Actaecolo g icasinica ,
展[ J ] ． 生态学报, ２０１７ , ３７ ( １６ ): ５５６５Ｇ５５７７．WANG QZ , LIU ２０１７ , ３７ ( １６ ): ５５６５Ｇ５５７７ ( inChinesewithEn g lishabstract ) ．

Effectsofsaltstressong rowthofOceanrice８６andabsor p tion ,
trans p ortationanddistributionofmineralelements

１ ２ , ２ １ , １ １
ZHAOJiwu , CHENG Yunfen g LIU Yon gq uan , XIANG Yon g lin g HUANG Yi , WANGXiaolin g
,
１．Colle g eo fA g riculture , Yan g tzeUniversit y Jin g zhou４３４０２５ , China ;
２．WuhanOceanriceInternationalBiotechCo． , LTD , Wuhan４３０２０５ , China

Abstract Thep otex p erimentwasusedtostud y theeffectsofsaltstressong rowthofOceanrice８６
andabsor p tion , trans p ortationanddistributionofmineralelementsusin gHuan g huazhanascontrol．The
resultsshowedthatsaltstressinhibitedthedr y matteraccumulationofricep lants．Thesalttolerance
/
/ ,
thresholdofOceanrice８６andHuan g huazhanwas８．７２gk gand６．３５gk gre p ectivel y ．Com p aredwith
Huan g huazhan , salttoleranceofOceanrice８６wasstron g er．Undersaltstress , Oceanrice８６selectivel y
＋ ＋
absorbedNa throu g htheroots y stemandre g ulatedthedistributionofNa attheor g anlevel．Itsleaf
＋ ＋ ＋
sheathaccumulatedmoreNa , reducin g thetoxicit yofNa totheleaves．ThecontentofK inHuan g Ｇ
＋
huazhanleavesdidnotchan g esi g nificantl y fromthatofthecontrol , buttheK contentintheleafsheath
＋
/
androots y stem was４．６４gk g inthesoil．TheK contentwas g reatl y reducedb y ５３．８％and７０．０％ , reＧ
＋
s p ectivel y ．TheK contentinvariousor g ansofOceanrice８６g raduall ydecreasedwiththeincreaseofthe
＋ ２＋
de g reeofsaltstress , andthedecreaseofK contentinleaveswasrelativel y low．ThecontentofCa and
２＋
M g intheleafsheathofHuan g huazhandecreasedsi g nificantl ywiththeincreaseofsaltＧstress , while
Oceanrice８６hadnosi g nificantchan g es．Com p aredwithHuan g huazhan , Oceanrice８６hadastron g abiliＧ
＋ ２＋ ２＋
t y toinhibitNa andp romotetheu p wardtrans p ortofCa andM g ．
Ke y words rice ; Oceanrice８６ ; saltstress ; salttolerancethreshold ; mineralelements ; selective
trans p ort

( 责任编辑: 张志钰)