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ID:9048322
大小:1.32 MB
页数:8页
时间:2018-04-15
《甘蓝型油菜两类细胞质雄性不育系花-角期形态和产量性状的比较》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中国油料作物学报2013,35(3):276-283ChineseJournalofOilCropSciencesdoi:10.7505/j.issn.1007-9084.2013.03.008甘蓝型油菜两类细胞质雄性不育系花-角期形态和产量性状的比较张耀文,赵小光,李建昌,田建华,李少钦,李永红,王丽萍,郭徐鹏,李殿荣(陕西省杂交油菜研究中心,陕西大荔,715105)摘要:以同源保持系(M)为对照,研究了3套甘蓝型油菜化学诱导型雄性不育系(CIMS)与同核细胞质雄性不育系(CMS)花期-角期形态和产量性状的差异。结果表明:蕾薹
2、期和初花期2次喷化学杂交剂SX-1后,CIMS叶面积缩小。CIMS株高在盛花期前比M系低,此后两者差距逐步缩小。CIMS的花蕾变轻变小,雄蕊缩短。CIMS的角果形状与M系无差别。CIMS的分枝部位、主花序长、主序角果数比M系低,而分枝数则增多。CIMS的根重和生物学产量更高,经济系数低,根冠比与M系无差异。在自然和人工授粉条件下CIMS与M系的结实性都无差别。与CMS相比,花期CIMS叶面积较小,株高在盛花期前比CMS低,差距而后加大。角果的长和宽、单个角果皮表面积和角果数均比CMS高,单株角果皮面积较小。分枝部位、分枝数、分枝
3、角果数、主花序长比CMS低,而主花序角果数、主花序结角密度、主花序角果占全株角果数比例高。与CMS相比,CIMS的经济系数高,而生物学产量、根重和根冠比较低。综合CIMS和CMS系统的优势,认为培育“CIMS+CMS”复合型授粉控制系统具有重要意义。关键词:甘蓝型油菜;化学诱导型雄性不育系(CIMS);同核异质细胞质雄性不育系(CMS);形态和产量特性;复合型授粉系统中图分类号:S565.403文献标识码:A文章编号:1007-9084(2013)03-0276-08Comparisonofmorphologicalandyie
4、ldcharacteristicsatfloweringtomaturingstagesbetweentworapeseedCMSsystemsZHANGYao-wen,ZHAOXiao-guang,LIJian-chang,TIANJian-hua,LIShao-qin,LIYong-hong,WANGLi-ping,GUOXu-peng,LIDian-rong(HybridRapeseedResearchCenterofShaanxiProvince,Dali715105,China)Abstract:Thehomologo
5、usnormalline(Mline,themaintainerofCMSline)ofBrassicanapusL.waschosenascontroltoinvestigatethedifferencesofmorphologicalandyieldcharacteristicsbetweentheCMSlinesandCIMSlines(chemicalinducedCMSderivedfromthemaintainerlines).ThreegroupsofmaterialswereusedincludingShaan2
6、A(CMS),Shaan3A(CMS),andShaan5A(CMS)withtheircorrespondingCIMSandMlines.ThechemicalSX-1wassprayedtwiceatbuddingandflower-startingperiods.Resultsshowedthat,comparedtotheMlines,leafareasofCIMSlineswerelessthantheirMlinesatthefloweringstage.TheplantheightofCIMSlineswaslo
7、wer,butthedifferencereducedgradually.Theshapesofflowerorgansweredifferentwithlighterandsmallerbuds,andshorterstamens.Buttheshapeofsiliquewasnotchanged.Thebranchingposition,maininflorescencelengthandsiliqueamountofmaininflorescenceoftheCIMSlineswerelower,butthebranche
8、samountwashigher.Biologicaloutput,rootweightwerehigher,andtheeconomiccoefficientwaslower.Seedyieldandroot-to-topratiohadnodifferenc
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