Dissection of QTLs for Yield Traits on the Short Arm of Rice Chromosome 6

来源 :中国农业科学(英文版) | 被引量 : 0次 | 上传用户:chenweifan
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
This study was undertaken to dissect quantitative trait loci (QTLs) controlling yield traits on the short arm of rice chromosome 6. A residual heterozygous line that carries a heterozygous segment extending from RM587 to RM19784 on the short arm of rice chromosome 6 was selected from an F7 population of the indica rice cross Zhenshan 97B/Milyang 46.An F2:3 population consisting of 221 lines was derived and grown in two trial sites. Six yield traits including number of panicles per plant, number of filled grains per panicle, total number of spikelets per panicle, spikelet fertility, 1000-grain weight, and grain yield per plant were measured. An SSR marker linkage map was constructed and employed to determine QTLs for yield traits with Windows QTL Cartographer 2.5. QTLs were detected in the target interval for all the traits analyzed except NP, with phenotypic variance explained by a single QTL ranging between 6.3% and 35.2%. Most of the QTLs for yield components acted as additive QTLs, while the three QTLs for grain yield had dominance degrees of 1.65,0.84, and -0.42, respectively. It was indicated that three or more QTLs for yield traits were located in the target region. The genetic action mode, the direction of the QTL effect, and the magnitude of the QTL effect varied among different QTLs for a given trait, and among QTLs for different traits that were located in the same interval.
其他文献
目的 建立一种新型的结肠癌原位移植模型--结肠造口结肠癌原位移植模型.方法 对不同的BALB/C nu/nu裸鼠分别进行皮下结肠癌细胞接种和进行结肠造口,将皮下形成的肿瘤制成细胞
目的:评估雷帕霉素药物洗脱支架(SES)对糖尿病小型猪冠状动脉支架置入后内膜增生的作用。方法:建立链脲菌素诱导的糖尿病小型猪模型(糖尿病组,n=12),随机选取2支冠状动脉置入
目的 对胃癌高发区甘肃省武威市儿童和青少年幽门螺杆菌(Hp)感染状况进行横断面调查.方法 采用随机抽样方法对武威市938名3~18岁儿童和青少年以及96户家庭进行Hp粪便抗原检测;
目的 研究不同碘摄入量人群非毒性甲状腺肿(甲肿)和非毒性甲状腺结节的流行病学特点及影响其发生、发展和转归的因素.方法 2004年对盘山(长期轻度碘缺乏)、彰武(碘缺乏基础上
目的 浅析危重病性多发性神经肌病(CIPM)的电生理特点及对机械通气支持时间的影响.方法 应用丹麦Keypoint 4肌电图仪对重症监护病房中17例机械通气时间>1周仍未能脱机的肺部
目的 探讨直肠痛肿瘤组织内术前放疗后浸润淋巴细胞(TIL)数量改变对预后的影响.方法 搜集近8年余接受30 Gy分10次12 d完成的术前放疗的直肠癌患者107例,分析TIL分级与术前放
目的 建立稳定、高表达红色荧光蛋白(RFP)标记的胰腺癌裸鼠原位移植瘤自发转移模型.方法 将稳定、高表达RFP的人胰腺癌细胞株SW1990-RFP注射至裸鼠皮下,建立人胰腺癌裸鼠皮下
目的 通过对婴幼儿泌尿系统结石的成分分析,探讨结石成因,以利于预防和治疗.方法 收集婴幼儿泌尿系统结石标本16例,均有同一品牌问题奶粉喂养史.结石组分用高效液相色谱分离
优秀作家总是力图在作品中营造出多重复义和话语歧义的境界,所以优秀作家的作品往往含蕴深厚。需要读者于作品的多重解读中流连徘徊,细细品味,方得真义。 Outstanding write
目的 研究中晚孕期超声筛查胎儿染色体异常的有效性及应用价值.方法 经超声筛查为结构异常的中晚孕期胎儿和经孕母血清筛查为高风险的中期妊娠胎儿,行羊膜腔或脐静脉穿刺取羊