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1、作物学报ACTAAGRONOMICASINICA2009,35(9):1715−1721http://www.chinacrops.org/zwxb/ISSN0496-3490;CODENTSHPA9E-mail:xbzw@chinajournal.net.cnDOI:10.3724/SP.J.1006.2009.01715不同绿豆品种花后干物质积累与转运特性121111,*高小丽孙健敏高金锋冯佰利王鹏科柴岩12西北农林科技大学农学院;西北农林科技大学信息工程学院,陕西杨凌712100摘要:以夏播
2、区高产绿豆品种冀绿2号、安9910和低产品种赤峰绿豆、泰来绿豆为材料,对开花至成熟期间植株茎秆、叶片、豆荚、籽粒等地上部各器官的干物质积累、分配与转运规律进行了研究。结果表明,绿豆开花后,植株地上部总干物质积累和籽粒干物质积累均呈近“S”型增长趋势,花后16~31d是生物产量和籽粒产量形成的关键时期;主茎开花节位叶片是籽粒充实的主要源器官,对籽粒产量的贡献率最大。不同绿豆品种间差异显著,高产品种冀绿2号和安9910各器官干物质积累和转运能力强,尤其是主茎开花节位叶片干物质合成和积累较多,具有较充足
3、的源,加之其单株结荚数多,具有较大的库容,最终获得了较高的收获指数和籽粒产量。因此,绿豆生产中,选用库容大的多荚、大粒型品种,抓好花后田间管理,延缓主茎开花节位叶片衰老,同时采用去除无效分枝等措施增强源库间的物质运输与分配是提高籽粒产量的关键。关键词:绿豆;干物质积累;干物质转运AccumulationandTransportationCharacteristicsofDryMatterafterAnthesisinDifferentMungBeanCultivars121111,*GAOXiao
4、-Li,SUNJian-Min,GAOJin-Feng,FENGBai-Li,WANGPeng-Ke,andCHAIYan12CollegeofAgronomy,NorthwestA&FUniversity;CollegeofInformationEngineering,NorthwestA&FUniversity,Yangling712100,ChinaAbstract:Thedrymatteraccumulationisthebasisforyieldformationincrops,andi
5、tstransportationdeterminesthenutrientflowandseedyield.Inordertofindouttheinternalmechanismsofyield-formationofmungbean,investigatedtheaccumulation,dis-tributionandtransportationcharacteristicsofdrymatterintheabove-groundorgansconsistingofstalks,leaves
6、,podshellsandseedsduringfloweringtomaturingbyusingmungbeanhigh-yieldingcultivarsJilü2andAn9910,andlow-yieldingcultivarsChifengandTailaiinthesummer-sowingareas.Theresultsshowedthatthechangeofdrymatteraccumulationinbothofplantandseedspresentedthe“S”curv
7、esafteranthesis,thekeystageforyieldformationofplantbiomassandseedswasat16–31daysafteranthesis,themainsourceorganofgrain-fillingwastheleavesatfloweringnodesonthemainstemwiththebiggestcontribu-tiontograinyield.Significantdifferenceswereobservedbetweendi
8、fferentgenotypes,theaccumulationandtransportationca-pacitiesofthehigh-yieldingcultivars(Jilü2andAn9910)weregreaterthanthoseofthelow-yieldingcultivars,especiallyfortheaccumulationofdrymatterintheleavesatthefloweringnodeonthemainstems,sohigheryi
