籽粒硬度是小麦加工品质的重要影响因素。puroind oline a(P in a)和puroind oline b(P in b)是控制小麦籽粒硬度的主效基因。根据已报导的小麦P in b基因的保守序列,设计合成了一对特异性引物ForB 1与R evB 1,对粘果山羊草(A eg ilop s...籽粒硬度是小麦加工品质的重要影响因素。puroind oline a(P in a)和puroind oline b(P in b)是控制小麦籽粒硬度的主效基因。根据已报导的小麦P in b基因的保守序列,设计合成了一对特异性引物ForB 1与R evB 1,对粘果山羊草(A eg ilop s kotschy i,CuMk)的三个材料的基因组DNA和胚乳cDNA进行P in b基因扩增、克隆、序列测定和表达分析,发现了4个新型P in b等位基因,基因序列与六倍体小麦的同源基因存在较大的差异。与软粒小麦品种C ap ito le的P inb-D 1a相比较,其核苷酸同源性分别为93.3%、94.6%、94.6%、94.4%,氨基酸同源性分别为90.5%、93.2%、93.2%、92.6%。其ORF长447 bp,编码148个氨基酸残基,都具有麦类作物P in b基因特有的19个氨基酸的信号肽序列和W PTKWW K的色氨酸结构域。等位基因P in b-11-1含有1个紧邻色氨酸结构域的突变位点(V a l66Phe)。RT-PCR证实了P in b基因在籽粒胚乳中的表达。Sou thern b lot分析结果显示,三种材料均含有两个拷贝的P in b基因。研究结果表明,粘果山羊草中包含与小麦差异较大的籽粒硬度控制基因,为栽培小麦的品质改良提供了丰富的基因资源。展开更多
空调热交换器性能异常检测技术是快速判断民机空调系统运行状态并合理安排维修任务的关键,传统的异常检测方法难以有效处理高维时序数据,无法实现系统早期故障预警。为此,本文提出了一种基于长短期记忆网络(LSTM,long-short term memory...空调热交换器性能异常检测技术是快速判断民机空调系统运行状态并合理安排维修任务的关键,传统的异常检测方法难以有效处理高维时序数据,无法实现系统早期故障预警。为此,本文提出了一种基于长短期记忆网络(LSTM,long-short term memory)与自编码器(AE,autoencoder)模型的无监督异常检测方法,用以识别民机空调系统异常运行状态。首先,基于民机空调系统原始传感器参数构建表征空调热交换器性能的特征监测参数;其次,构建LSTM-AE模型进行数据特征重构并计算重构误差;最后,使用孤立森林(iForest, isolation forest)进行无监督异常监测。将本文构建的无监督异常检测方法与传统方法对比,并建立模型评估指标,验证结果表明,所构建的模型方法可以对民机空调热交换器性能异常状态进行有效检测。展开更多
Exploring novel high molecular weight glutenin subunits(HMW-GSs)from wild related species is a strategy to improve wheat processing quality.The objective of the present investigation was to identify the chromosomes of...Exploring novel high molecular weight glutenin subunits(HMW-GSs)from wild related species is a strategy to improve wheat processing quality.The objective of the present investigation was to identify the chromosomes of the wheatalien introgression line N124,derived from the hybridization between Triticum aestivum with Aegilops kotschyi,and characterize the effects on quality-related traits.Fluorescence in situ hybridization karyotypes showed that N124 is a disomic 1U^(k)(1A)substitution line.Sodium dodecyl sulfate polyacrylamide gel electrophoresis(SDS-PAGE)and reversedphase high-performance liquid chromatography verified N124 expressed two HMW-GSs of the Ae.kotschyi parent.PacBio RNA sequencing and phylogenetic analysis confirmed that the two HMW-GSs were U^(k)x and U^(k)y.Compared to the wheat parent,the substitution line had no obvious agronomic defects except fewer grains per spike but improved several major quality parameters.It can be served as a donor or bridge material for wheat quality improvement.展开更多
文摘籽粒硬度是小麦加工品质的重要影响因素。puroind oline a(P in a)和puroind oline b(P in b)是控制小麦籽粒硬度的主效基因。根据已报导的小麦P in b基因的保守序列,设计合成了一对特异性引物ForB 1与R evB 1,对粘果山羊草(A eg ilop s kotschy i,CuMk)的三个材料的基因组DNA和胚乳cDNA进行P in b基因扩增、克隆、序列测定和表达分析,发现了4个新型P in b等位基因,基因序列与六倍体小麦的同源基因存在较大的差异。与软粒小麦品种C ap ito le的P inb-D 1a相比较,其核苷酸同源性分别为93.3%、94.6%、94.6%、94.4%,氨基酸同源性分别为90.5%、93.2%、93.2%、92.6%。其ORF长447 bp,编码148个氨基酸残基,都具有麦类作物P in b基因特有的19个氨基酸的信号肽序列和W PTKWW K的色氨酸结构域。等位基因P in b-11-1含有1个紧邻色氨酸结构域的突变位点(V a l66Phe)。RT-PCR证实了P in b基因在籽粒胚乳中的表达。Sou thern b lot分析结果显示,三种材料均含有两个拷贝的P in b基因。研究结果表明,粘果山羊草中包含与小麦差异较大的籽粒硬度控制基因,为栽培小麦的品质改良提供了丰富的基因资源。
文摘空调热交换器性能异常检测技术是快速判断民机空调系统运行状态并合理安排维修任务的关键,传统的异常检测方法难以有效处理高维时序数据,无法实现系统早期故障预警。为此,本文提出了一种基于长短期记忆网络(LSTM,long-short term memory)与自编码器(AE,autoencoder)模型的无监督异常检测方法,用以识别民机空调系统异常运行状态。首先,基于民机空调系统原始传感器参数构建表征空调热交换器性能的特征监测参数;其次,构建LSTM-AE模型进行数据特征重构并计算重构误差;最后,使用孤立森林(iForest, isolation forest)进行无监督异常监测。将本文构建的无监督异常检测方法与传统方法对比,并建立模型评估指标,验证结果表明,所构建的模型方法可以对民机空调热交换器性能异常状态进行有效检测。
基金supported by the National Natural Science Foundation of China(91935303)the Sichuan Province Science and Technology Department Crops Breeding Project,China(2021YFYZ0002)+1 种基金the Crop Molecular Breeding Platform of Sichuan Province,China(2021YFYZ0027)the Foundation for Youth of Sichuan Academy of Agricultural Sciences and the Sichuan Provincial Agricultural Department Innovative Research Team,China(wheat-10)。
文摘Exploring novel high molecular weight glutenin subunits(HMW-GSs)from wild related species is a strategy to improve wheat processing quality.The objective of the present investigation was to identify the chromosomes of the wheatalien introgression line N124,derived from the hybridization between Triticum aestivum with Aegilops kotschyi,and characterize the effects on quality-related traits.Fluorescence in situ hybridization karyotypes showed that N124 is a disomic 1U^(k)(1A)substitution line.Sodium dodecyl sulfate polyacrylamide gel electrophoresis(SDS-PAGE)and reversedphase high-performance liquid chromatography verified N124 expressed two HMW-GSs of the Ae.kotschyi parent.PacBio RNA sequencing and phylogenetic analysis confirmed that the two HMW-GSs were U^(k)x and U^(k)y.Compared to the wheat parent,the substitution line had no obvious agronomic defects except fewer grains per spike but improved several major quality parameters.It can be served as a donor or bridge material for wheat quality improvement.
