This paper analyses the sequence stratigraphy and palaeogeography of the Early and early Middle Jurassic coal measures in the Turpan-Hami Basin, northwestern China.The controls of the palaeogeography and sequence stra...This paper analyses the sequence stratigraphy and palaeogeography of the Early and early Middle Jurassic coal measures in the Turpan-Hami Basin, northwestern China.The controls of the palaeogeography and sequence stratigraphy on the coal accumulation in this basin have been discussed.The results show that the coal measures were formed in a fluvial-delta-lacustrine sedimentary system,and a total of 4 third-order sequences were developed,展开更多
旨在利用全基因组关联分析(genome-wide association study,GWAS)挖掘与鉴定吐鲁番黑羊体重和体尺性状的相关候选基因及分子标记,为吐鲁番黑羊的选育提高及资源开发利用提供科学依据。本研究选取129只年龄在1~3岁、饲养环境一致的健康...旨在利用全基因组关联分析(genome-wide association study,GWAS)挖掘与鉴定吐鲁番黑羊体重和体尺性状的相关候选基因及分子标记,为吐鲁番黑羊的选育提高及资源开发利用提供科学依据。本研究选取129只年龄在1~3岁、饲养环境一致的健康吐鲁番黑羊公羊,测定体重、体高、体斜长、胸围、管围、胸宽、胸深、尾宽、尾长共9项体重体尺性状表型数据;随后使用的一次性采血管(添加EDTA-K2抗凝剂)采集5 mL颈静脉外周血提取DNA。对合格的DNA样本进行简化基因组测序(genotyping-by-sequencing,GBS),运用samtools、bcftools等软件对原始测序数据进行检测、过滤及功能注释;然后利用GCTA、TreeBeST、GEMMA等软件分别完成群体遗传结构分析、群体分层评估及全基因组关联分析。本研究测序得到160.88 G的Raw data,质控后Clean data为157.87 G,获得460766个SNPs位点。全基因关联分析在9个性状中共筛选到74个显著SNPs位点(P<10-5),进一步注释得到到39个候选基因。单倍型分析发现候选基因的多个显著位点均位于单倍型block区域内。本研究鉴定了与吐鲁番黑羊体重体尺性状显著关联的SNP位点及候选基因,为深入解析这些性状的遗传机制提供了重要依据,同时也为吐鲁番黑羊分子标记辅助育种提供了基础数据。展开更多
文摘This paper analyses the sequence stratigraphy and palaeogeography of the Early and early Middle Jurassic coal measures in the Turpan-Hami Basin, northwestern China.The controls of the palaeogeography and sequence stratigraphy on the coal accumulation in this basin have been discussed.The results show that the coal measures were formed in a fluvial-delta-lacustrine sedimentary system,and a total of 4 third-order sequences were developed,
