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Opaque-2基因导入各类隐性纯合体玉米早代子粒粒重和含油率的效应研究 被引量:2
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作者 昂沃 郝小琴 吴子恺 《玉米科学》 CAS CSCD 北大核心 2012年第1期24-29,34,共7页
选用微胚乳等各类隐性纯合体玉米为试验材料,利用杂交法把opaque-2基因导入各类隐性纯合体玉米,并以被导原隐性纯合体为对照,分析各类玉米杂交导入o2后的早代o2隐性纯合体子粒粒重和含油率的变化。结果表明,在导入opaque-2后的微胚乳等... 选用微胚乳等各类隐性纯合体玉米为试验材料,利用杂交法把opaque-2基因导入各类隐性纯合体玉米,并以被导原隐性纯合体为对照,分析各类玉米杂交导入o2后的早代o2隐性纯合体子粒粒重和含油率的变化。结果表明,在导入opaque-2后的微胚乳等各类隐性纯合体玉米杂交早代中,整粒重、胚和非胚部重、整粒含油率、胚和非胚部含油率都发生了增减两个方向的变异,效应随不同类玉米及子粒不同部位而异。导入o2后的o2微胚乳玉米(o2we)的粒重和含油率都极显著降低,表明o2基因对所选用的微胚乳玉米早代的粒重和含油率都具极显著的减少效应。o2bw(39)、o2w(45)、o2w(49)、o2w(51)和o2w(53)等玉米整粒重极显著增加;o2hw(27)、o2w(45)、o2w(49)、o2w(51)和o2w(53)等玉米胚重极显著增加;o2hw(27)、o2bw(39)、o2w(49)和o2w(53)等玉米整粒含油率显著或极显著增加;o2w(49)和o2w(53)玉米胚含油率显著或极显著增加;o2hw(27)、o2bw(39)和o2w(53)等玉米非胚部含油率显著或极显著增加。表明导入o2后对这几类玉米部分材料的粒重和含油率具有显著的改良效应,通过选择有望获得相应的优良品系。 展开更多
关键词 玉米 o2基因 子粒含油量 子粒 SSR标记
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Application of Y2O3 nanoparticles on reducing the content of tar in cigarettes
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作者 YANG Zhi-hong YANG Zhi-yu +3 位作者 YU Xiao-bin XU Fei-guang WANG Chang-long NIE Ji-lan 《Journal of Chemistry and Chemical Engineering》 2007年第1期17-20,共4页
Y2O3 nanoparticles prepared in microemulsion, which were sprayed on cut tobacco, can reduce tar in cigarettes effectively. Reducing the content of tar in many brands of cigarettes was studied. The results show that Y2... Y2O3 nanoparticles prepared in microemulsion, which were sprayed on cut tobacco, can reduce tar in cigarettes effectively. Reducing the content of tar in many brands of cigarettes was studied. The results show that Y2O3 nanoparticles can reduce tar in cigarettes effectively and have no influence on nicotine when the addition of Y2O3 nanoparticles is 0,5-1.2%. The smaller the grain size of Y2O3 nanoparticles is,the more effective tar reduction is. The principle of reducing tar in cigarettes is studied preliminarily. 展开更多
关键词 Y2O3 nanoparticles CIGARETTE tar content
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