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时间:2020-03-27
《不同pH值对甘蔗幼苗生长和生理特性的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、南方农业学报2011,42(4):380-383JournalofSouthernAgriculture不同pH值对甘蔗幼苗生长和生理特性的影响刘光玲1,陈荣发1,田富桥1,杨丽涛-,z,p,李杨瑞1,2,3,4(1广西大学农学院,南宁530005;2广西亚热带生物资源保护利用重点实验室,南宁530005;3中国农业科学院甘蔗研究中·cz/广西甘蔗遗传改良重点实验室,南宁530007;4广西作物遗传改良生物技术重点开放实验室。南宁530007)摘要:【目的】探讨不同PH值对甘蔗幼苗生长和生理特性的影响,为甘蔗育苗及生产提供参考。【方
2、法】以桂糖2l号(GT21)和新台糖22号(ROC22)甘蔗品种为材料,利用营养液培养法,研究不同pH值下甘蔗幼苗生长和生理特性的变化。【结果】在pH4.5—7.5范围内的培养液对甘蔗幼苗的生长和发育不会产生显著的不良影响,而在pH6.0时两个甘蔗品种幼苗株高最高,叶绿素、可溶性糖、可溶性蛋白含量最高,而相对电导率、丙二醛和脯氨酸含量最低,表明在此pH值下甘蔗蔗株各种生理代谢高度协调。【结论】甘蔗生长的pH值适应范围较广,pH6.0为甘蔗幼苗生长的最适P}l值。关键词:甘蔗;幼苗;pH值;生长;生理特性中图分类号:S566.101文
3、献标识码:A文章编号: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;
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