資源描述:
《化感水稻苗期不同器官水浸提液及根系分泌物對(duì)稗草的化感作用倡》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、第15卷第2期中國生態(tài)農(nóng)業(yè)學(xué)報(bào)Vol暢15 No暢22007年3月ChineseJournalofEco唱AgricultureMarch,?。玻埃埃烦兴久缙诓煌鞴偎嵋杭案捣置谖飳?duì)稗草的化感作用1,222倡倡1,2何海斌王海斌陳祥旭林文雄22222賈小麗方長旬甘邱鋒倪尼娜吳文祥(1暢福建農(nóng)林大學(xué)生物農(nóng)藥與化學(xué)生物學(xué)教育部重點(diǎn)實(shí)驗(yàn)室,福州 350002;2暢生命科學(xué)學(xué)院,福州?。常担埃埃埃玻┱谧匀环N植條件下研究了強(qiáng)化感水稻品種“PI312777”不同葉期(3~6葉)、不同器官(根、莖、葉)水浸提液對(duì)稗草
2、根長的抑制率,比較了不同極性樹脂處理后水稻根系分泌物水溶液的抑制率變化。結(jié)果表明:在3~6葉期相同水稻器官比較,均以5葉期浸提液抑制率最高;5葉期水稻不同器官比較,以葉的浸提液抑制率最高;土培至6葉期的水稻根系分泌物水溶液的抑制率為47暢06%,經(jīng)極性樹脂ADS唱21處理后抑制率增強(qiáng)為64暢71%,經(jīng)非極性樹脂ADS唱5處理后抑制率減弱為26暢47%;水培至6葉期的水稻根系分泌物水溶液的抑制率為38暢24%,經(jīng)ADS唱21處理后抑制率增強(qiáng)為58暢82%,經(jīng)ADA唱5處理后抑制率減弱為20暢59%。因此水稻“PI3127
3、77”根系分泌物中化感物質(zhì)以非(弱)極性物質(zhì)為主,極性物質(zhì)減弱了非(弱)極性物質(zhì)的化感抑草作用。關(guān)鍵詞水稻化感作用水浸提液根系分泌物稗草1,2Allelopathiceffectsofaqueousextractsfromdifferentpartsandrootexudatesofriceonbarnyardgrass.HEHai唱Bin,221,22222WANGHai唱Bin,CHENXiang唱Xu,LINWen唱Xiong,JIAXiao唱Li,F(xiàn)ANGChang唱Xun,GANQiu唱Feng,NINi唱N
4、a,WUWen唱Xiang(1暢KeyLabofPesticideandChemicalBiologyofMinistryofEducation,F(xiàn)ujianAgricultureandForestUniversityFuzhou350002,China;2暢SchoolofLifeSciences,F(xiàn)ujianAgricultureandForestryUniversity,F(xiàn)uzhou350002,China),CJEA,2007,15(2):14~17AbstractUndernaturalconditions,
5、theinhibitoryrate(IR)ofaqueousextractsfromdifferentpartsofallelopathicriceac唱cession“PI312777”(plantedinpaddysoil)indifferentlifestage(3~6leaf)totherootgrowthofbarnyardgrasswerestud唱ied.TheIRofrootexudatesat6leafstageofriceplantedinpaddysoilandinhydroponicsandtr
6、eatedbypolarresinADS唱21andnonpolarresinADS唱5respectively,weretestedinthebioassay.TheresultsshowthattheIRoftheaqueousextractsinsamericepartsat5leafstageisthehighestamong3~6leafstages,andtheIRoftheaqueousextractsfromleavesat5leafstageisthestrongest.TheIRoftheroote
7、xudatesofthericewhichareplantedinpaddysoilto6leafstageis47.06%,andtheIRincreasesto64.71%aftertreatedbyADS唱21anddecreasesto26.47%aftertreatedbyADS唱5;theIRoftherootexudatesofthericewhicharegrowninhydroponicsto6leafstageis38.24%,andtheIRincreasesto58.82%aftertreate
8、dbyADS唱21anddecreasesto20.59%aftertreatedbyADS唱5.Theresultsimpliesthattheallelo唱pathiceffectsofthericerootexudatesmightbemainlyresultedfromthenonpolar(orweakpolar)com