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1、南方農(nóng)業(yè)學(xué)報(bào)2011，42(4)：380-383JournalofSouthernAgriculture不同pH值對(duì)甘蔗幼苗生長(zhǎng)和生理特性的影響劉光玲1，陳榮發(fā)1，田富橋1，楊麗濤-，z，p，李楊瑞1，2，3，4(1廣西大學(xué)農(nóng)學(xué)院，南寧530005；2廣西亞熱帶生物資源保護(hù)利用重點(diǎn)實(shí)驗(yàn)室，南寧530005；3中國(guó)農(nóng)業(yè)科學(xué)院甘蔗研究中·cz／廣西甘蔗遺傳改良重點(diǎn)實(shí)驗(yàn)室，南寧530007；4廣西作物遺傳改良生物技術(shù)重點(diǎn)開(kāi)放實(shí)驗(yàn)室。南寧530007)摘要：【目的】探討不同PH值對(duì)甘蔗幼苗生長(zhǎng)和生理特性的影響，為甘蔗育苗及生產(chǎn)提供參考?！痉?/p>
2、法】以桂糖2l號(hào)(GT21)和新臺(tái)糖22號(hào)(ROC22)甘蔗品種為材料，利用營(yíng)養(yǎng)液培養(yǎng)法，研究不同pH值下甘蔗幼苗生長(zhǎng)和生理特性的變化?！窘Y(jié)果】在pH4．5—7．5范圍內(nèi)的培養(yǎng)液對(duì)甘蔗幼苗的生長(zhǎng)和發(fā)育不會(huì)產(chǎn)生顯著的不良影響，而在pH6．0時(shí)兩個(gè)甘蔗品種幼苗株高最高，葉綠素、可溶性糖、可溶性蛋白含量最高，而相對(duì)電導(dǎo)率、丙二醛和脯氨酸含量最低，表明在此pH值下甘蔗蔗株各種生理代謝高度協(xié)調(diào)。【結(jié)論】甘蔗生長(zhǎng)的pH值適應(yīng)范圍較廣，pH6．0為甘蔗幼苗生長(zhǎng)的最適P}l值。關(guān)鍵詞：甘蔗；幼苗；pH值；生長(zhǎng)；生理特性中圖分類(lèi)號(hào)：S566．101文
3、獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：2095一1191(2011)04-0380—04EffectsofdifferentpHvaluesongrowthandphysiological■‘‘‘n’’‘Cnaracteristics0lsugarcaneseedlingsLIUGuang-lin91，CHENRong-fal，TIANFu-qia01，YANGLi-ta01·2’”，LIYang-ruil，2，3t4(IAgricuhuralCollege，GuangxiUniversity，Nanning530005，China；2Guangx
4、iKeyLaboratoryofSubtropicalBioresourcesConservationandUtilization，Nanning530005，China；3SugarcaneResearchCenter，ChineseAcademyofAgriculturalSciences／GuangxiKeyLaboratoryofSugarcaneGeneticImprovement，Nanning530007，China；4GuangxiCropGeneticImprovementandBiotechnologyLab，N
5、anning530007，China)Abstract：【Objective]ThepresentstudywasconductedtofindouttheeffectsofdifferentpHvaluesongrowthandphysiologicalcharacteristicsofsugarcaneseedlings，andtoprovidescientificbasisforbreedingandproductionofsugar-cane．【Method]TheplantsoftwosugarcanevarietiesG
6、T21andROC22weregrowninnutrientculture．Thetotalehloro·phylls，solublesugar，totalprotein，maIondealdehyde(MDA)andprolinecontents，andrelativeconductivityinleavesweredetermined．【ResultlThegrowthanddevelopmentofsugarcaneplantswerenotaffectedsignificandybetweenpH4．5-7．5，howeve
7、r，theplantsgrewbestatpH6．0，andshowedhighestplantheight，ehlorophyHcontent，solublesugarandtotalproteincontentsinbothvarieties。whiletherelativeconductivity，andMDAandprolinecontentswerethelowest，whichshowedahiighcoordinationofphysiologicalmetabolisminsugarcaneplants．【Concl
8、usion】ResultsindicatedthatthebestpHvalueforthesugarcaneplantsgrowthwas6．0．Keywords：sugarcane；seedling；pHvalue；growth；
