An F9 recombinant inbred lines (RIL) population, derived from a cross between IR28 (Oryza sativa L. spp. indica) and Daguandao (O. sativa L. spp. japonica), was used to construct a molecular linkage map and to i...An F9 recombinant inbred lines (RIL) population, derived from a cross between IR28 (Oryza sativa L. spp. indica) and Daguandao (O. sativa L. spp. japonica), was used to construct a molecular linkage map and to identify germination ability including the traits of imbibition rate, germination rate, germination index, root length, shoot length and seed vigor at 14℃ for 23 d. A composite interval mapping approach was applied to conduct genetic analysis for germination ability. The frequency distributions of the germination ability traits under the cold stress in the RIL population showed continuous segregation, suggesting they were quantitative traits controlled by several genes. A total of seven QTLs were identified on chromosomes 4 6 and 9, including two for imbibition rate (qIR-6, qIR-9), one for germination rate (qGR-4), two for germination index (qGI-4-1, qGI-4-2) and two for root length (qRL-4-1, qRL-4-2). There were no detected QTLs controlling shoot length and seed vigor. The phenotypic variance explained by a single QTL ranged from 9.1% to 37.0%, and two major QTLs, qlR-6 and qGI-4-2, accounted for over 30% of the phenotypic variance. The expressions of QTLs were developmentally regulated and growth stage-specific. Most of the QTLs observed here were located in the regions similar to the QTLs for rice cold tolerance reported previously, indicating that these QTLs were reliable. However, qRL-4-2 is not reported before.展开更多
目的:研究循环肿瘤细胞(CTC)水平与卵巢癌患者临床病理特征及生存率的关系。方法:选择从2012年6月到2014年12月在我院就诊的卵巢癌患者94例记为观察组。根据所有患者CTC水平将其分成高CTC组(CTC水平≥7个/5mL)57例及低CTC组(CTC水平<...目的:研究循环肿瘤细胞(CTC)水平与卵巢癌患者临床病理特征及生存率的关系。方法:选择从2012年6月到2014年12月在我院就诊的卵巢癌患者94例记为观察组。根据所有患者CTC水平将其分成高CTC组(CTC水平≥7个/5mL)57例及低CTC组(CTC水平<7个/5 m L)37例,另选同期在我院体检的卵巢良性囊肿者90例记为对照组,分析CTC阳性与患者病理特征的关系、CTC水平与患者生存率和复发转移的关系以及CTC水平与患者病理特征、生存率、复发转移率的相关性。结果:对照组90例患者均未检测出CTC阳性。观察组94例患者中检测出68例CTC阳性,总阳性率为72.34%;观察组患者临床分期为II期和III期的CTC阳性率均明显高于I期,有淋巴结转移的CTC阳性率明显高于无淋巴结转移(P<0.05)。高CTC组的1年、2年、3年生存率与低CTC组相比,差异均无统计学意义(P>0.05)。高CTC组的1年、2年、3年复发转移率均高于低CTC组(P<0.05)。Spearman相关性分析结果显示,CTC水平与患者的临床分期、淋巴结转移以及复发转移率均呈正相关(P<0.05),而与年龄、病理分型、病理分级及生存率均无明显相关性(P>0.05)。结论:卵巢癌患者临床分期为Ⅱ期和Ⅲ期和有淋巴结转移的CTC阳性率较高,且CTC水平与复发转移率关系密切,临床通过检测CTC水平,可能有助于评估患者的预后。展开更多
基金supported by the Jiangsu Agricultural Three-Area-Focused Program,China (Grant No.Q200670)the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT),China
文摘An F9 recombinant inbred lines (RIL) population, derived from a cross between IR28 (Oryza sativa L. spp. indica) and Daguandao (O. sativa L. spp. japonica), was used to construct a molecular linkage map and to identify germination ability including the traits of imbibition rate, germination rate, germination index, root length, shoot length and seed vigor at 14℃ for 23 d. A composite interval mapping approach was applied to conduct genetic analysis for germination ability. The frequency distributions of the germination ability traits under the cold stress in the RIL population showed continuous segregation, suggesting they were quantitative traits controlled by several genes. A total of seven QTLs were identified on chromosomes 4 6 and 9, including two for imbibition rate (qIR-6, qIR-9), one for germination rate (qGR-4), two for germination index (qGI-4-1, qGI-4-2) and two for root length (qRL-4-1, qRL-4-2). There were no detected QTLs controlling shoot length and seed vigor. The phenotypic variance explained by a single QTL ranged from 9.1% to 37.0%, and two major QTLs, qlR-6 and qGI-4-2, accounted for over 30% of the phenotypic variance. The expressions of QTLs were developmentally regulated and growth stage-specific. Most of the QTLs observed here were located in the regions similar to the QTLs for rice cold tolerance reported previously, indicating that these QTLs were reliable. However, qRL-4-2 is not reported before.
文摘目的:研究循环肿瘤细胞(CTC)水平与卵巢癌患者临床病理特征及生存率的关系。方法:选择从2012年6月到2014年12月在我院就诊的卵巢癌患者94例记为观察组。根据所有患者CTC水平将其分成高CTC组(CTC水平≥7个/5mL)57例及低CTC组(CTC水平<7个/5 m L)37例,另选同期在我院体检的卵巢良性囊肿者90例记为对照组,分析CTC阳性与患者病理特征的关系、CTC水平与患者生存率和复发转移的关系以及CTC水平与患者病理特征、生存率、复发转移率的相关性。结果:对照组90例患者均未检测出CTC阳性。观察组94例患者中检测出68例CTC阳性,总阳性率为72.34%;观察组患者临床分期为II期和III期的CTC阳性率均明显高于I期,有淋巴结转移的CTC阳性率明显高于无淋巴结转移(P<0.05)。高CTC组的1年、2年、3年生存率与低CTC组相比,差异均无统计学意义(P>0.05)。高CTC组的1年、2年、3年复发转移率均高于低CTC组(P<0.05)。Spearman相关性分析结果显示,CTC水平与患者的临床分期、淋巴结转移以及复发转移率均呈正相关(P<0.05),而与年龄、病理分型、病理分级及生存率均无明显相关性(P>0.05)。结论:卵巢癌患者临床分期为Ⅱ期和Ⅲ期和有淋巴结转移的CTC阳性率较高,且CTC水平与复发转移率关系密切,临床通过检测CTC水平,可能有助于评估患者的预后。