玉米重组近交系的高质分析  

Analysis of High Quality of Recombinant Inbred Lines of Corn

作　　者：吴金山[1] 李瑞杰[2] 马晶[1] 赵庆杰[1] 高豪杰[1,3] 王亚沉[1] WU Jinshan LI Ruijie MA Jing ZHAO QingjieI GAO Haojie WANG Yachen(College of Tropical Agriculture and Forestry, Hainan University, Danzhou, Hainan 571737, China Sichuan University of Arts and Sciences, Dazhou, Sichuan 635000, China Zhanjiang State Farms Research Institute, Zhanjiang, Guandong 524086, China)

机构地区：[1]海南大学热带农林学院,海南儋州571737 [2]四川文理学院,四川达州635000 [3]广东省湛江农垦科学研究所,广东湛江524086

出　　处：《热带生物学报》2016年第4期435-439,共5页Journal of Tropical Biology

基　　金：海南省自然科学基金(项目编号:314057)

摘　　要：本研究以自交系掖478、丹340及其衍生的345个F_(3:4)重组自交系(RIL)为材料,对该群体穗长(EL)、穗粗(ED)、穗行数(KRE)、行粒数(KRN)、干籽重(DSW)、百粒重(100-GW)等6个重要穗部性状进行方差、相关性分析,正态性检测。结果表明:除100-GW外,其他各性状在345个家系间存在真实的遗传差异;F_(3:4)家系的6个主要穗部性状均表现出数量遗传特点,其平均值接近双亲平均值,有一定数量的双向超亲家系,是一个适合遗传作图的理想群体。Corn parents YE478 and DAN340 were crossed to produce their first generation which were then inbred to produce 345 F3,4recombinant inbred lines（ RIL）. The parents,F1 and F3,4 were used as the material to determine 6 traits in the corn ear,ie. ear length（ EL）,spike thickness（ ED）,kernel row number（ KRN）,kernel number per row（ KRE）,dry seed weight（ DSW）,hundred grain weight（ 100-GW）. These 6 traits were then placed for analysis of variance,correlation analysis and normality test. Results show that all traits except the 100-GW in the 345 lines were genetically different in reality. All the 6 traits were quantitatively genetic in the F3,4lines,and the values of their traits were close to those of their parents. The F3,4lines showed some transgressive segregations over their parents,and are hence good populations for genetic mapping.

关 键 词：玉米 重组近交系 产量性状 相关分析 

分 类 号：Q943[生物学—植物学]