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时间:2020-04-16
《淹水时间对不同耐涝性大豆品种苗期根部形态和叶部生理指标的影响-论文.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、第33卷第1期大豆科学Vo1.33№.22014扯2月S0YBEANSCIENCEDee.2014淹水时间对不同耐涝性大豆品种苗期根部形态和叶部生理指标的影响宋晓慧,张智杰。,李春光,张代平,韩英鹏,李冬梅,李文滨(1.东北农业大学大豆生物学教育部重点实验室,东北农业大学农业部东北大豆生物学与遗传育种重点实验室,黑龙江哈尔演150030;2.黑龙江省农垦科学院农作物开发研究所,黑龙江佳木斯154007;3.鸡东县农业技术推广中心,黑龙江鸡东158200;4.黑龙江省农垦科学院水稻研究所,黑龙江佳木斯154007)摘要:以耐涝品种垦丰l4和不耐涝品种垦丰16为试材,采用双层套盆法,研
2、究淹水胁迫时间(1,3,5,7,10d)对不同耐涝性大豆品种苗期根部形态和生理指标的影响。结果表明:两个品种均在淹水处理第3天出现不定根,与CK相比,短时间(1~3d)胁迫,根瘤数、电导率、丙二醛和脯氨酸含量变化无明差异;随着胁迫时间增加,根瘤生长受到抑制,耐涝品种根瘤受到抑制程度小于不耐涝品种,不定根数量、电导率、丙二醛含量均增加,且相同胁迫时间垦丰l6增幅大于垦丰14。脯氨酸含量变化与其他生理指标不同,垦丰l4在淹水第7天开始大幅度增加,而垦丰l6在淹水第5天开始大幅度增加,在胁迫处理7d内,垦丰l6增幅大于垦丰14;胁迫处理7d以后,变化趋势相反。关键词:大豆;淹水时间;苗期
3、;根部形态指标;叶部形态指标中图分类号:$565.1文献标识码:A文章编号:1000—9841(2013)06-0070-03EffectofWaterloggingTimeonRootMorphologyandFoliarPhysiologicalInde-xesofSoybeanVarietiesSONGXiao—hui,ZHANGZhi-jie,LIChun—guang,ZKANGDai—ping,HANYing—peng,LIDong—mei,UWen—bin(1.KeyLaboralors'ofSoybeanBiologyinChineseMinistryofEducat
4、ion,KeyI,aboratoryofSoybeanBiologyandBreeding/GeneticsofChineseAgricuhureMinistry,NortheastAgricuhuralUniversity,Harbin150030.China;2.CropResearchInstitute,HeilongjiangAcademyofLandReclamationSciences,Jiamu—si154007,China;3.JidongAgriculturalTechnologyExtensionCenter,Jidong158200,China;4.RiceR
5、esearchInstitute,HeilongjiangAcademyofLandReclamationSciences,Jiamusi154007,China)Abstract:Underwaterloggingstressatseedlingstagebyusingdoublesetofbasin,twosoyheanvarieties,Kenfellgl4withstrongerwaterloggingtoleranceandKenfeng16withtheweaker,wereusedtostudytheeffectofwaterloggingtime(1,3,5,7,1
6、0days)Oilrootmorphologyandfoliarphysiologicalindexesofsoybean.AdventitiousrootsWereoccnrredafter3daysofwater—loggingstress,comparedwithCK,numberofnodules,relativeconductivity,MDAoftwovarietieschangedlittleatthefirstthreedays.whilewiththeincreasingofstresstime.Thegrowthofrootnoduleswasrestricte
7、dwithprolongedsti‘esstimeattdnodulenumbersofKenfeng14waslessrestrainedthanKenfeng16.Withtheincreasingofstresstime,adventitiousrootsnumber,rela—tiveconductivity,andMDAcontentofthetwovarietieswereallincreased,andatthesamestresstime,increm
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