检索结果-南通市图书馆

Development of peanut varieties with high oil content by in vitro mutagenesis and screening

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative agriculture 2020年第12期19卷 2974-2982页

作者： WANG Jing-shan SHI Lei LIU Yue ZHAO Ming-xia WANG Xia QIAO Li-xian SUI Jiong-ming LI Guan ZHU Hong YU Shan-lin College of Agronomy Qingdao Agricultural University/Shandong Provincial Key Laboratory of Dryland Farming TechnologyQingdao 266109P.R.China Haidu College Qingdao Agricultural UniversityLaiyang 265200P.R.China College of Horticulture Qingdao Agricultural UniversityQingdao 266109P.R.China

Peanut (Arachis hypogaea L.) is an important oil crop globally and high oil content is one of the major targets in peanut breeding programs. Previous studies indicated that the osmotic pressure (OP) of the leaves of peanut plants subjected to drought stress was negatively correlated with kernel oil content. Based on this knowledge, we established a practical and reliable method for creating new peanut varieties with high oil content using in vitro mutagenesis and directional OP-based selection. Using embryonic leaflets of peanut variety Huayu 20 as explants, pingyangmycin (PYM) as the mutagen, and hydroxyproline (HYP) as the OP regulator, we developed 15 HYP-tolerant regenerated plants. For each regenerated plant, we selected offspring with oil content>55% (relative to 49.5% for Huayu 20). We developed and released three new peanut varieties with high yield and high oil content from the offspring of the HYP-tolerant regenerated plants. The three new varieties were named as Yuhua 4, Yuhua 9 and Yuhua 14 and their oil contents were 57.7, 61.1 and 59.3%, respectively. The results indicate that in vitro mutagenesis with PYM followed by directed screening with HYP is a useful approach for breeding peanut varieties with high oil contents.

关键词： Arachis hypogaea in vitro mutagenesis HYP-directed selection high oil variety

A PP2C-1 Allele Underlying a Quantitative Trait Locus Enhances Soybean l O0-Seed Weight

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2017年第5期10卷 670-684页

作者： Xiang Lu Qing Xiong Tong Cheng Qing-Tian Li Xin-Lei Liu Ying-Dong Bi Wei Li Wan-Ke Zhang Biao Ma Yong-Cai Lai Wei-Guang Du Wei-Qun Man Shou-Yi Chen Jin-Song Zhang State key Lab of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China Institute of Soybean Research Heilongjiang Provincial Academy of Agricultural Sciences Harbin 150086 China Institute of Farming and Cultivation Heilongjiang Provincial Academy of Agricultural Sciences Harbin 150086 China These authors contributed equally to this article

Cultivated soybeans may lose some useful genetic loci during domestication. Introgression of genes from wild soybeans could broaden the genetic background and improve soybean agronomic traits. In this study, through whole-genome sequencing of a recombinant inbred line population derived from a cross between a wild soybean ZYD7 and a cultivated soybean HN44, and mapping of quantitative trait loci for seed weight, we discovered that a phosphatase 2C-1 （PP2C-1） allele from wild soybean ZYD7 contributes to the increase in seed weight/size. PP2C-1 may achieve this function by enhancing cell size of integument and activating a subset of seed trait-related genes. We found that PP2C-1 is associ- ated with GmBZR1, a soybean ortholog of Arabidopsis BZR1, one of key transcription factors in brassi- nosteroid （BR） signaling, and facilitate accumulation of dephosphorylated GmBZR1. In contrast, the PP2C-2 allele with variations of a few amino acids at the N-terminus did not exhibit this function. More- over, we showed that GmBZR1 could promote seed weight/size in transgenic plants. Through analysis of cultivated soybean accessions, we found that 40% of the examined accessions do not have the PP2C-1 allele, suggesting that these accessions can be improved by introduction of this allele. Taken together, our study identifies an elite allele PP2C-1, which can enhance seed weight and/or size in soybean, and pinpoints that manipulation of this allele by molecular-assisted breeding may increase production in soybean and other legumes/crops.

关键词： soybean lO0-seed weight PP2C-1 BZR1

Performance and stability of yield in response to plant density,year and location in maize hybrids of Northwest China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Technology in Agronomy 2022年第1期2卷 18-24页

作者： Yuan Dong Zhiqian Feng Ting Li Ali Farhan Xiaokang Tian Yonghui Lao Yinxin Duan Leiyong Si Xinghua Zhang Jiquan Xue Shutu Xu key laboratory of biology and genetic Improvement of Maize in Arid Areas of the Northwest Region Ministry of Agriculture and Rural AffairsCollege of AgronomyNorthwest A&F UniversityYanglingShaanxi 712100China Maize Engineering Technology Research Centre of Shaanxi Province Northwest A&F UniversityYangling Shaanxi 712100China Cereal Crop Research Institute(CCRI) NowsheraKyber Pakhtunkhwa 25000Pakistan

Identifying desirable genotypes with the best performance in diverse environments is a perpetual aim of plant breeding,and the interaction between genotype and environment(G×E)always plays a key *** study was conducted to elucidate the genetic behaviour of different hybrid combinations at various densities in diverse *** to a line×tester design,32 hybrid combinations were obtained from 16 inbred individuals crossed with two testers and planted at three locations at three density levels(45,000,67,500 and 90,000 plants ha-1)during ***(G),environment(E)and the interaction of genotype and environment(G×E)significantly affected grain yield at different *** planting density enhanced grain yield and improved the efficiency of germplasm screening,where the effect of location on grain yield at different densities was larger than that of year and the GCA was larger than the ***,four inbred lines(KB102,KB081,KA105,and KB106)with a high GCA,environmental adaptability,and several combinations using them as parents have been approved in ShannXi Province and National of *** conclusion,the evaluation of combining ability at multiple densities and locations can effectively screen inbred lines and improve breeding efficiency.

关键词： breeding Northwest planted

QTLs for flag leaf size and their influence on yield-related traits in wheat(Triticum aestivum L.)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

QTLs for flag leaf size and their influence on yield-related...

Improved Brassica rapa reference genome by single-molecule sequencing and chromosome conformation capture technologies

2014年中国作物学会学术年会

作者： Xiaoli Fan Fa Cui Chunhua Zhao Wei Zhang Lijuan Yang Xueqiang Zhao Qiannan Su Jun Ji Zongwu Zhao Yiping Tong Junming Li Center for Agricultural Resources Research Institute of Genetics and Developmenlal Biology Chinese Academy of Sciences University of Chinese Academy of Sciences State key laboratory of Plant Cell and Chromosome Engineering Chinese Academy of Sciences Xinxiang Academy of Agricultural Sciences

Common wheat(Triticum aestivum L.) is one of the most important food crops *** varieties that maintain ideal leaf morphology in multiple environments are in favor of improving yield *** this study,an F recombinant inbred line population derived from the cross between KN9204 and J411 was used to detect quantitative trait loci(QTL) for flag leaf size traits(FLSTs) among eight environments and to examine the genetic effect of FLSTs on the expression of QTL for yield related trais(YTRs).A total of 38 QTL for flag leaf length(FLL),flag leaf width(FLW) and flag leaf area(FLA) were *** them,one major stable QTL for FLA(qFlaSB) was mapped to the bin of C-5BL6-0.29,with KN9204-derived allele increasing FLA significantly in the allelic effect *** to the mapping results of co-located QTL,FLW was inferred as the major contributor to affect the flag leaf *** major stable QTL for FLW(qFlw-4B.3 and qFIw-6B.2) were mapped to the bin of C-4BL5-0.71 and the bin of C-6BS5-0.76,respectively,which were valuable for improving the leaf morphology and grain output through pyramiding the elite alleles from both ***,both unconditional and conditional QTL mapping for YRTs with respect to each FLST were conducted to investigate the genetic effects of FLSTs on YRTs at the QTL *** results indicated that the expression of the QTL for YRTs which clustered with the QTL for FLSTs were generally improved by FLSTs,while their sensitivity to environments was also *** identification of QTL for FLSTs provides useful markers for wheat molecular breeding program designed to obtain desirable plant types,and the dissection of the genetic relationship between FLSTs and YRTs at the QTL level offers a foundation for further increasing yield potential.

关键词： Flag leaf related traits Yield potential Quantitative trait locus Conditional QTL mapping Wheat

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Horticulture Research 2018年第1期5卷 373-383页

作者： Lei Zhang Xu Cai Jian Wu Min Liu Stefan Grob Feng Cheng Jianli Liang Chengcheng Cai Zhiyuan Liu Bo Liu Fan Wang Song Li Fuyan Liu Xuming Li Lin Cheng Wencai Yang Mai-he Li Ueli Grossniklaus Hongkun Zheng Xiaowu Wang Institute of Vegetables and Flowers Chinese Academy of Agricultural Science100081BeijingChina College of Horticulture China Agricultural University100193BeijingChina Biomarker Technologies Corporation 101300BeijingChina Department of Plant and Microbial biology University of Zürich8008ZürichSwitzerland Shandong Provincial key laboratory of Protected Vegetable Molecular breeding Shandong Shouguang Vegetable Seed Industry Group Co.Ltd262700ShouguangShandong ProvinceChina Forest Dynamics Swiss Federal Research Institute WSL8903BirmensdorfSwitzerland

Brassica rapa comprises several important cultivated vegetables and oil *** reference genome assemblies of Brassica rapa are quite fragmented and not highly contiguous,thereby limiting extensive genetic and genomic ***,we report an improved assembly of the *** genome(v3.0)using single-molecule sequencing,optical mapping,and chromosome conformation capture technologies(Hi-C).Relative to the previous reference genomes,our assembly features a contig N50 size of 1.45 Mb,representing a~30-fold *** also identified a new event that occurred in the *** genome~1.2 million years ago,when a long terminal repeat retrotransposon(LTR-RT)*** analysis refined the relationship of genome blocks and accurately located the centromeres in the *** *** *** genome v3.0 will serve as an important community resource for future genetic and genomic studies in *** resource will facilitate breeding efforts in ***,as well as comparative genomic analysis with other Brassica species.

关键词： species. conformation breeding

genetic basis and breeding application of clonal diversity and dual reproduction modes in polyploid Carassius auratus gibelio

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2010年第4期53卷 409-415页

作者： GUI JianFang ZHOU Li State key laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China

A unisexual species is generally associated with polyploidy, and reproduced by a unisexual reproduction mode, such as gyno- genesis, hybridogenesis or parthenogenesis. Compared with other unisexual and polyploid species, gibel carp (Carassius au- ratus gibelio) has a higher ploidy level of hexaploid. It has undergone several successive rounds of genome polyploidy, and experienced an additional, more recent genome duplication event. More significantly, the dual reproduction modes, including gynogenesis and sexual reproduction, have been demonstrated to coexist in the polyploid gibel carp. This article reviews the genetic basis concerning polyploidy origin, clonal diversity and dual reproduction modes, and outlines the progress in new va- riety breeding and gene identification involved in the reproduction and early development. The data suggests that gibel carp are under an evolutionary trajectory of diploidization. As a novel evolutionary developmental (Evo-Devo) biology model, this work highlights future perspectives about the functional divergence of duplicated genes and the sexual origin of vertebrate animals.

关键词： Carassius auratus gibelio polyploidy clonal diversity gynogenesis sexual reproduction dual reproduction modes breeding

Chromosome-scale assembly and evolution of the tetraploid Salvia splendens (Lamiaceae) genome

在线全文

学校读者我要写书评

暂无评论

Horticulture Research 2021年第1期8卷 2721-2735页

作者： Kai-Hua Jia Hui Liu Ren-Gang Zhang Jie Xu Shan-Shan Zhou Si-Qian Jiao Xue-Mei Yan Xue-Chan Tian Tian-Le Shi Hang Luo Zhi-Chao Li Yu-Tao Bao Shuai Nie Jing-Fang Guo Ilga Porth Yousry AEl-Kassaby Xiao-Ru Wang Charles Chen Yves Van de Peer Wei Zhao Jian-Feng Mao Beijing Advanced Innovation Center for Tree breeding by Molecular Design National Engineering Laboratory for Tree BreedingKey Laboratory of Genetics and Breeding in Forest Trees and Ornamental PlantsMinistry of EducationCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China Ori(Shandong)Gene Science and Technology Co. LtdWeifang 261000 ShandongChina Department des Sciences du Bois et de la Foret Facultede Foresteriede Geographie et GeomatiqueUniversite LavalQuebec CityQC G1V 0A6Canada Department of Forest and Conservation Sciences Faculty of ForestryUniversity of British ColumbiaVancouverBC V6T 1Z4Canada Department of Ecology and Environmental Science UmeåPlant Science CentreUmeåUniversitySE-90187 UmeåSweden Department of Biochemistry and Molecular biology 246 Noble Research CenterOklahoma State UniversityStillwaterOKUSA Department of Plant Biotechnology and Bioinformatics Ghent UniversityGhentBelgium VIB Center for Plant Systems biology 9052 GhentBelgium Centre for Microbial Ecology and Genomics Department of BiochemistryGenetics and Microbiology GeneticsUniversity of PretoriaPrivate Bag X20Pretoria 0028South Africa College of Horticulture Academy for Advanced Interdisciplinary StudiesNanjing Agricultural UniversityNanjing 210095China

Polyploidization plays a key role in plant evolution,but the forces driving the fate of homoeologs in polyploid genomes,i.e.,paralogs resulting from a whole-genome duplication(WGD)event,remain to be ***,we present a chromosome-scale genome assembly of tetraploid scarlet sage(Salvia splendens),one of the most diverse ornamental *** found evidence for three WGD events following an older WGD event shared by most eudicots(theγevent).A comprehensive,spatiotemporal,genome-wide analysis of homoeologs from the most recent WGD unveiled expression asymmetries,which could be associated with genomic rearrangements,transposable element proximity discrepancies,coding sequence variation,selection pressure,and transcription factor binding site *** observed differences between homoeologs may reflect the first step toward sub-and/or *** assembly provides a powerful tool for understanding WGD and gene and genome evolution and is useful in developing functional genomics and genetic engineering strategies for scarlet sage and other Lamiaceae species.

关键词： species evolution assembly

Population genomic analysis and Genome wide association studies through the re-sequencing of 778 maize inbred lines

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Population genomic analysis and Genome wide association stud...

SUMO E3 Ligase AtMMS21 Regulates Drought Tolerance in Arabidopsis thaliana

第一届全国玉米生物学学术研讨会

作者：史俊鹏 Zhipeng Liu Baobao Wang Xin Wang Andrew Hauck Shaojun Xie Hainan Zhao Mei Zhang Silong Sun Haiming Zhao Weibin Song Jinsheng Lai State key laboratory of Agrobiotechnology and National Maize Improvement Center China Agricultural University

Modern maize breeding process have generated enormous amount of genetic variants which may contribute to the phenotype *** top of re-sequencing data of 278 maize inbred lines,we expanded the population to 778 lines with.5x depth on average and identified 56 million *** 30%of the SNPs are novel and enriched in rare *** non-syn/syn ratio is 1.09 which is comparable with

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Integrative Plant biology 2013年第1期55卷 83-95页

作者： Shengchun Zhang Yanli Qi Ming Liu Chengwei Yang Guangdong key Lab of Biotechnology for Plant Development College of Life Science South China Normal University

Post-translational modifications of proteins by small ubiquitin-like modifiers （SUMOs） play crucial roles in plant growth and development, and in stress responses. The MMS21 is a newly-identified Arabidopsis thaliana L. SUMO E3 ligase gene aside from the SIZ1, and its function requires further elucidation. Here, we show that MMS21 deficient plants display improved drought tolerance, and constitutive expression of MMS21 reduces drought tolerance. The expression of MMS21 was reduced by abscisic acid （ABA）, polyethylene glycol （PEG） or drought stress. Under drought conditions, mms21 mutants showed the highest survival rate and the slowest water loss, and accumulated a higher level of free proline compared to wild-type （WT） and MMS21 over-expression plants. Stomatal aperture, seed germination and cotyledon greening analysis indicated that mms21 was hypersensitive to ABA. Molecular genetic analysis revealed that MMS21 deficiency led to elevated expression of a series of ABA-mediated stress-responsive genes, including COR15A, RD22, and P5CS1 The ABA and drought-induced stress-responsive genes, including RAB18, RD29A and RD29B, were inhibited by constitutive expression of MMS21. Moreover, ABA-induced accumulation of SUMO-protein conjugates was blocked in the mms21 mutant. We thus conclude that MMS21 plays a role in the drought stress response, likely through regulation of gene expression in an ABA-dependent pathway.

关键词： ABA AtMMS21 drought tolerance SUMO.