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1、中国水稻科学(ChinJRiceSci),２０１５,２９(３):２７３－２８１http://www．ricesci．cnDOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１５．０３．００６２７３籼、粳超级稻茎秆抗倒支撑特征的差异研究龚金龙１,２邢志鹏１胡雅杰１张洪程１,∗戴其根１霍中洋１许轲１魏海燕１高辉１(１扬州大学农业部长江流域稻作技术创新中心/江苏省作物遗传生理重点实验室,江苏扬州２２５００９;２江苏省种子管理站,南京２１００３６;∗通讯联系人,EＧmail:hczhang＠yzu．edu．cn)DifferenceinLodgingResistanceofCulmBet
2、weenindicaandjaponicaSuperRiceG１,２,XINGZhiＧpeng１,HUYaＧjie１,ZHANGHongＧcheng１,∗,DAIQiＧgen１,HUOZhongＧyang１,XUONGJinＧlong１１１Ke,WEIHaiＧyan,GAOHui(InnovationCenterofRiceCultivationTechnologyintheYangtzeValley,MinistryofAgriculture/KeyLaboratoryofCropGeneticsandPhysiologyofJiangsuProvince,YangzhouUnivers
3、ity,Yangzhou２２５００９,China;２SeedManagementStationofJiangsuProvＧince,Nanjing２１００３６;∗Correspondingauthor,EＧmail:hczhang＠yzue．duc．n)GONGJinlong,XINGZhipeng,HUYajie,etal．Differenceinlodgingresistanceofculmbetweenindicaandjaponicasuperrice．ChinJRiceSci,２０１５,２９(３):２７３Ｇ２８１．Abstract:Torevealthedifferenceinl
4、odgingresistanceofculmbetweenindicaandjaponicasuperrice,afieldexperimentwasconductedbyusingtwomainrepresentativesuperhybridindicacombinationsandtwoconventionaljaponicasuperricevarietiesasmaterialsinthericeＧwheatcroppingregions．Characteristicsofmorphology,Fillingandmechanics,breakingresistance,bend
5、ingmoment,lodgingindex,apparentlodgingrateinthefieldandgrainyieldwereanalyzedsystematically．Resultsshowedthat:１)grainyieldofjaponicaricewassignificantlyhigherthanthatofindicarice,witharateof１２．３０％．Fortheculmof０－２０cmfromthebottom,thebendingmomentofjaponicaricewassignificantlyhigherthanindicariceand
6、thelodgingindexfollowedanoppositetrendwithoutlodging,comparedtotheaverageapparentlodgingratesinthefieldof１１．９７％,１２．５０％from２０１１to２０１２forYangliangyou６andLiangyoupeijiu,respectively．２)Forallthefourbasalinternodes,indicaricehadsignificantlyhigherbreakingresistanceandlodgingindex,whilebendingmomentfoll
7、owedanoppositetendency．３)Lengthofeachinternodeandplantheight,outerdiameterofbasalinternode,stalktypeindex,singlepanicleweight,heightofgravitycenterandratioofgravitycenterheighttoplantheightofjaponicaricewerelower
