大坝健康监测(Dam Health Monitoring, DHM)模型提供了大坝响应的估计值,如坝顶位移、混凝土应力等,能够得到大坝安全的性态并进行监控和预警,对大坝智慧化管理十分重要。文章详细介绍了DHM模型的实现流程和基本框架,深入阐述了确定性模...大坝健康监测(Dam Health Monitoring, DHM)模型提供了大坝响应的估计值,如坝顶位移、混凝土应力等,能够得到大坝安全的性态并进行监控和预警,对大坝智慧化管理十分重要。文章详细介绍了DHM模型的实现流程和基本框架,深入阐述了确定性模型3种实现方法,即有限元法、有限差分法和离散元法的发展现状以及主要存在的问题,以期为大坝管理人员提供最新的基础性研究成果。展开更多
The foundation parents play key roles in the genetic improvement of both yield potential and end-use quality in wheat.Characterizing the genetic basis that underlies certain beneficial traits in the foundation parents...The foundation parents play key roles in the genetic improvement of both yield potential and end-use quality in wheat.Characterizing the genetic basis that underlies certain beneficial traits in the foundation parents will provide theoretical reference for molecular breeding by a design approach.‘Kenong 9204’(KN9204)is a candidate foundation parent characterized by ideotype,high yield potential,and particularly high nitrogen fertilizer utilization.To better understand the genetic basis of its high yield potential,high throughput whole-genome re-sequencing(10×)was performed on KN9204,its parental lines and its derivatives.A high-resolution genetic composition map of KN9204 was constructed,which showed the parental origin of the favorable genomic segments based on the identification of excellent yield-related quantitative trait loci(QTL)from a bi-parental mapping population.Xiaoyan 693(XY693),a wheat–Thinopyrum ponticum partial amphidiploid,contributed a great deal to the high yield potential of KN9204,and three major stable QTLs from XY693 were fine mapped.The transmissibility of key genomic segments from KN9204 to its derivatives were delineated,indicating that haplotype blocks containing beneficial gene combinations were conserved along with directional selection by breeders.Evidence for selection sweeps in the breeding programs was identified.This study provides a theoretical reference for the breeding of high-yield wheat varieties by a molecular design approach.展开更多
文摘大坝健康监测(Dam Health Monitoring, DHM)模型提供了大坝响应的估计值,如坝顶位移、混凝土应力等,能够得到大坝安全的性态并进行监控和预警,对大坝智慧化管理十分重要。文章详细介绍了DHM模型的实现流程和基本框架,深入阐述了确定性模型3种实现方法,即有限元法、有限差分法和离散元法的发展现状以及主要存在的问题,以期为大坝管理人员提供最新的基础性研究成果。
基金supported by the grants from the Shandong Major Basic Research Project of Natural Science Foundation,China(ZR2019ZD16)the Shandong Provincial Key Research and Development Program,China(2019GNC106126 and 2021LZGC009)+3 种基金the Natural Science Foundation of Hebei Province,China(C2021205013)the Hebei Scientific and Technological Innovation Team of Modern Wheat Seed Industry,China(21326318D)the National Natural Science Foundation of China(31871612,31901535,and 32101726)the China Agriculture Research System of MOF and MARA(CARS-03).
文摘The foundation parents play key roles in the genetic improvement of both yield potential and end-use quality in wheat.Characterizing the genetic basis that underlies certain beneficial traits in the foundation parents will provide theoretical reference for molecular breeding by a design approach.‘Kenong 9204’(KN9204)is a candidate foundation parent characterized by ideotype,high yield potential,and particularly high nitrogen fertilizer utilization.To better understand the genetic basis of its high yield potential,high throughput whole-genome re-sequencing(10×)was performed on KN9204,its parental lines and its derivatives.A high-resolution genetic composition map of KN9204 was constructed,which showed the parental origin of the favorable genomic segments based on the identification of excellent yield-related quantitative trait loci(QTL)from a bi-parental mapping population.Xiaoyan 693(XY693),a wheat–Thinopyrum ponticum partial amphidiploid,contributed a great deal to the high yield potential of KN9204,and three major stable QTLs from XY693 were fine mapped.The transmissibility of key genomic segments from KN9204 to its derivatives were delineated,indicating that haplotype blocks containing beneficial gene combinations were conserved along with directional selection by breeders.Evidence for selection sweeps in the breeding programs was identified.This study provides a theoretical reference for the breeding of high-yield wheat varieties by a molecular design approach.
