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1、南方農(nóng)業(yè)學報JOURNALOFSOUTHERNAGRICULTUREISSN2095—1191；CODENNNXAABDOI：10．3969／j：issn．2095—1191．2013．12．1981不同浸水時問對大豆種子發(fā)芽的影響陳文杰，陳淵，梁江，曾維英，湯復躍，韋清源(廣西農(nóng)業(yè)科學院經(jīng)濟作物研究所，南寧530007)摘要：【目的】觀察桂春8號和桂春11號大豆種子在不同浸水時間處理條件下的受害表現(xiàn)，篩選出大豆種子耐浸水脅迫處理方法?！痉椒ā恳匀ルx子水浸泡12～168hA，分別測定浸泡溶液電導性及種子的發(fā)芽勢、出苗率和正常苗率等?！窘Y(jié)果】浸水處
2、理對大豆種子產(chǎn)生嚴重的危害，浸水后大豆種皮消融，種子內(nèi)溶物外漏，種子萌芽子葉出現(xiàn)壞斑，部分真葉壞死，生長點消失；根部主根發(fā)育受到破壞，長出不定根，嚴重時根部不能發(fā)育，部分種子向地性消失。隨著浸水時間的延長，大豆浸泡液電導率不斷增加，發(fā)芽勢、出苗率、正常苗率逐漸降低，浸泡液電導率與發(fā)芽勢、出苗率、正常苗率的相關(guān)系數(shù)分別為一0．823、一0．854和一0．811，達極顯著負相關(guān)。此外，桂春11號的發(fā)芽勢、正常苗率均顯著高于桂春8號?！窘Y(jié)論】桂春l1號的耐浸水脅迫能力高于桂春8號。浸泡液電導率可作為大批量初步篩選大豆耐浸水種質(zhì)資源的指標，發(fā)芽勢、正常芽
3、率等可作為進一步篩選大豆耐浸水脅迫的指標。關(guān)鍵詞：浸水脅迫；大豆；正常苗率；電導率中圖分類號：$565．104文獻標志碼：A文章編號：2095—1191(2013)11-1981-04EffectsofdifferentsoakingdurationsonsoybeanseedgerminationCHENWen-jie，CHENYuan，LIANGJiang，ZENGWei—ying，TANGFu-yue，WEIQing—yuan(CashCropsResearchInstitute，GuangxiAcademyofAgriculturalSc
4、iences，Nanning530007，China)Abstract：【Objective】TheresponsesofGuichun8andGuichun11indiferentsoakingdurationswerestudiedtoin—vestigatethescreeningtechniqueforsoybeanseedfloodingtolerance．【Method】Twovarietieswerefloodedfor12-168hindeionizedwater．Theelectricalconductivityofsoybea
5、nsoakingliquid，germinationenergy，germinationpercentageandnormalseedingpercentageweredetected．【Resuh】Soakingtreatmentwasdisastrousforsoybeanseed，whichmadeseedskinmelt，internalsolublesubstancespill，euphylladie，badspotappearincotyledon，growingpointvanish，mainroothurtandadventiti
6、ousrootgrow．Undermoreseriouscircumstances，rootgrowthwasterminatedandthegeotropismofpar-tialseedsdisappeared．Asthetreatmenttimeprolonged，electricalconductivitywasincreased，howevergerminationener—gy，germinationpercentageandnormalseedingpercentageweregraduallydecreased．Thecoefic
7、ientofassociationbetweenelectricalconductivityandotherthreeindexeswas-0．823，一0．854and一0．811，respectively，whichpresentedextremelynegativecorrelation．ThegerminationenergypercentageandnormalseedingpercentagedataofGuichun11weresignifi—cantlyhigherthanthoseofGuichun8．【Conclusion]T
8、hefloodingtoleranceabilityofGuichun11wasbetterthanGuichun8inthisexpe
