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优良玉米自交系‘浚696'的选育与应用 被引量:1
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作者 苏玉杰 张晓春 +6 位作者 程建梅 张素芬 宋军锋 杨美丽 赵树政 秦贵文 鹿红卫 《中国农学通报》 2024年第3期41-45,共5页
旨在为优异玉米自交系改良及其选育杂交种、玉米种质创新提供科学依据。以国内自交系‘自340’与国外杂交种‘X1132X’的优良单株(S1)回交构建基础材料,利用优系聚合和高大严选育方法经过7代自交培育出优良多抗玉米自交系‘浚696’。该... 旨在为优异玉米自交系改良及其选育杂交种、玉米种质创新提供科学依据。以国内自交系‘自340’与国外杂交种‘X1132X’的优良单株(S1)回交构建基础材料,利用优系聚合和高大严选育方法经过7代自交培育出优良多抗玉米自交系‘浚696’。该自交系抗粗缩病、茎腐病、南方锈病、大斑病、小斑病等多种病害;果穗筒形、大小均匀一致,穗行数18-20行;株型紧凑,配合力高,制种产量高,适应性广。利用‘浚696’自交系组配育成的‘永优1573’和‘永优1583’两个玉米杂交种通过国家或省级审定。这两个新品种在中国黄淮海夏玉米地区及内蒙古自治区中晚熟区域生产上大面积推广应用,取得较好的社会经济效益。 展开更多
关键词 玉米 自交 ‘浚696’ 优系聚合
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Design of Sustainable Multifunctional Nanocoatings:A Goal-driven Multiscale Systems Approach
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作者 Jie Xiao Yinlun Huang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2011年第4期666-673,共8页
Polymer nanocomposites have a great potential to be a dominant coating material in a wide range of applications in the automotive,aerospace,ship-making,construction,and pharmaceutical industries.However,how to realize... Polymer nanocomposites have a great potential to be a dominant coating material in a wide range of applications in the automotive,aerospace,ship-making,construction,and pharmaceutical industries.However,how to realize design sustainability of this type of nanostructured materials and how to ensure the true optimality of the product quality and process performance in coating manufacturing remain as a mountaintop area.The major challenges arise from the intrinsic multiscale nature of the material-process-product system and the need to manipulate the high levels of complexity and uncertainty in design and manufacturing processes.In this work,the challenging objectives of sustainable design and manufacturing are simultaneously accomplished by resorting to multiscale systems theory and engineering sustainability principles.The principal idea is to achieve exceptional system performance through concurrent characterization and optimization of materials,product and associated manufacturing processes covering a wide range of length and time scales.Multiscale modeling and simulation techniques ranging from microscopic molecular modeling to classical continuum modeling are seamlessly coupled.The integration of different methods and theories at individual scales allows the quantitative prediction of macroscopic system performance from the fundamental molecular behavior.Furthermore,mathematically rigorous and methodologically viable approaches are pursued to achieve sustainability-goal-oriented design of material-process-product systems.The introduced methodology can greatly facilitate experimentalists in novel material invention and new knowledge discovery.At the same time,it can provide scientific guidance and reveal various new opportunities and effective strategies for achieving sustainable manufacturing.The methodological attractiveness will be fully demonstrated by a detailed case study on the design of thermoset nanocomposite coatings. 展开更多
关键词 sustainable design multiscale modeling and simulation polymer nanocomposites
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