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以玉米高密度遗传连锁图谱IBM2 2008 Neighbors为参考图谱,收集来自不同磷素条件下定位的307个玉米产量构成因子的数量性状位点(quantitative trait locus,QTL),利用Bio Mercator 2.1软件在10条染色体上发掘出36个不同磷素条件下产量构成因子“一致性”QTL(MQTL)区间。图距范围在0.73~7.44 c M之间。通过MQTL两端标记在玉米物理图谱Ref Gen_v2上的位置,将MQTL进行物理图谱定位。MQTL在物理图谱上的图距范围在0.5~10.6 Mb之间。结果表明MQTL位点为今后发掘玉米耐低磷产量构成因子的候选基因提供了基础,为深入理解磷素产量构成因子遗传控制机制和分子设计育种提供科学依据。
Based on the high-density maize genetic linkage map IBM2 2008 Neighbors, the quantitative trait locus (QTL) of 307 maize cultivars from different P concentrations was collected and analyzed using Bio Mercator 2.1 software in 10 Chromosomes were excavated to yield components of “QTL” QTL (MQTL) interval under 36 different phosphorus conditions. The range of the picture is between 0.73 ~ 7.44 c M. The MQTL is mapped to the physical map by the position of the MQTL marker on the map of the maize map Ref Gen_v2. The physical distance between MQTLs and the physical map ranges from 0.5 to 10.6 Mb. The results showed that the MQTL locus provided the basis for future exploration of candidate genes for maize phosphorus tolerance constitutive factors and provided a scientific basis for further understanding of genetic control mechanisms and molecular design breeding of phosphorus yield components.