检索结果-南通市图书馆

Studies on the Mutant Systems of the Bombyx mori gene bank

Agricultural Sciences in China 2002年第11期1卷 1277-1285页

作者： LU Cheng, DAI Fang-yin and XIANG Zhong-huai(The Key Sericultural Laboratory, Ministry of Agriculture/Southwest Agricultural University,Chongqing 400716, P.R. China) The Key Sericultural Laboratory Ministry of Agriculture/Southwest Agricultural University Chongqing 400716 P.R.China

Through over ten years of study, more than 1 000 genetic materials including mutant genes, chromosomal variation strains and special genetic materials of Bombyx mori, Linnaeus, collected, introduced or created since 1940s especially late 1980s, have been sorted out and put in order. After identifications and genetic analyses of their morphological, physiological and biochemical characters, the silkworm gene bank was constructed and the preservation system was perfected, and more than 600 silkworm strains were kept in this gene bank. The preserved silkworm mutant genes have covered more than 90% of existent ones across the world, in which, more than 100 are rare and precious mutant genes, and over 60 mutant genes were found and studied for the first time. Through hybrid analyses, linkage tests and three-point gene location tests, a perfect linkage retrieval labeling system of silkworm was established, which included 230 marker genes covering all the 28 linkage groups of Bombyx mori. The gene location system (composite system of recessive genes) of different linkage groups was set up. The intergenic complementation of mutant egg color and third type of maternal heredity egg color have been found, and indicated that the epistatic effect of mutant gene of white egg is universal. Twenty eight independent near isogenic lines marked with morphological mutation gene have been created and a series of novel breeding materials possessing great potential for application such as high feeding efficiency, special sex markers, natural colored silk, resistance to disease, wider feeding range and adjustable parthenogenesis, etc. , have been developed. The sustainable maintenance and management technique system of silkworm gene resources were well established.

关键词： Bombyx mori Mutation gene bank genetic analysis gene-resources development

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genomic prediction using composite training sets is an effective method for exploiting germplasm conserved in rice gene banks

引用

The Crop Journal 2022年第4期10卷 1073-1082页

作者： Sang He Hongyan Liu Junhui Zhan Yun Meng Yamei Wang Feng Wang Guoyou Ye CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement Agricultural Genomics Institute in ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120GuangdongChina Rice Breeding Innovations Platform International Rice Research InstituteDAPO Box 7777Metro ManilaPhilippines Guangdong Provincial Key Laboratory of New Technology in Rice Breeding Rice Research InstituteGuangdong Academy of Agricultural SciencesGuangzhou 510640GuangdongChina Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource College of Tropical CropsHainan UniversityHaikou 570228HainanChina

Germplasm conserved in gene banks is underutilized,owing mainly to the cost of characterization.Genomic prediction can be applied to predict the genetic merit of germplasm.Germplasm utilization could be greatly accelerated if prediction accuracy were sufficiently high with a training population of practical size.Large-scale resequencing projects in rice have generated high quality genome-wide variation information for many diverse accessions,making it possible to investigate the potential of genomic prediction in rice germplasm management and exploitation.We phenotyped six traits in nearly 2000 indica(XI)and japonica(GJ)accessions from the Rice 3K project and investigated different scenarios for forming training populations.A composite core training set was considered in two levels which targets used for prediction of subpopulations within subspecies or prediction across subspecies.Composite training sets incorporating 400 or 200 accessions from either subpopulation of XI or GJ showed satisfactory prediction accuracy.A composite training set of 600 XI and GJ accessions showed sufficiently high prediction accuracy for both XI and GJ subspecies.Comparable or even higher prediction accuracy was observed for the composite training set than for the corresponding homogeneous training sets comprising accessions only of specific subpopulations of XI or GJ(within-subspecies level)or pure XI or GJ accessions(across-subspecies level)that were included in the composite training set.Validation using an independent population of 281 rice cultivars supported the predictive ability of the composite training set.Reliability,which reflects the robustness of a training set,was markedly higher for the composite training set than for the corresponding homogeneous training sets.A core training set formed from diverse accessions could accurately predict the genetic merit of rice germplasm.

关键词： Genomic prediction Composite training set Rice germplasm gene bank Reliability criterion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

计算机用作核酸顺序数据库——gene bank

引用

生命的化学(中国生物化学会通讯) 1986年第5期 22-23页

作者：陈农安中科院上海生化所

在通用的微型计算机上,建立核酸顺序数据库,也可称它为gene bank。储存已发表的大量核酸顺序,以及它们的参考资料。可以随时、迅速的查阅和打印出来。它是从事分子生物学、分子遗传学,以及基因工程的工作者有力的助手,对基础理论研究机... 详细信息

在通用的微型计算机上,建立核酸顺序数据库,也可称它为gene bank。储存已发表的大量核酸顺序,以及它们的参考资料。可以随时、迅速的查阅和打印出来。它是从事分子生物学、分子遗传学,以及基因工程的工作者有力的助手,对基础理论研究机构、高等院校、

关键词： DNA 核酸 gene bank 同源性数据库数据库系统计算机

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：