Molecular marker-facilitated studies in an elite maize population: I. Linkage analysis and determination of QTL for morphological traits
Molecular marker-facilitated studies in an elite maize population: I. Linkage analysis and determination of QTL for morphological traits
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DOI：
10.1007/bf00222387
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发表时间：
1994-04
影响因子：
5.4
通讯作者：
L. R. Veldboom;Michael Lee;W. Woodman
中科院分区：
文献类型：
--
作者：
L. R. Veldboom;Michael Lee;W. Woodman
利用限制性片段长度多态性（RFLPs）和1个形态标记对150个F2∶3玉米（Zea maysL.）系的形态和生理性状进行了定量性状位点（QTL）分析。F2∶3系进行重复栽培试验，对株高、穗高和开花性状进行了评价。鉴定各性状的QTL，确定遗传效应。估计基因对开花性状的作用以显性为主。双亲对花期和出丝值的提高都有贡献。株高和穗高增加的QTL通常由较高的亲本Mo17贡献。估计这些性状的基因作用主要是偏显性的。株高QTL位于对株高有定性影响的等位基因所定义的位点附近。
Restriction fragment length polymorphisms (RFLPs) and one morphological marker were used to investigate quantitative trait loci (QTL) for morphological and physiological traits evaluated on 150 F2∶3maize (Zea maysL.) lines derived from the cross of elite U.S. Corn Belt inbreds Mo17 and H99. F2∶3lines were grown in a replicated experiment and evaluated for plant and ear heights and flowering traits. QTL were identified for each trait, and genetic effects were determined. Estimated gene action for the flowering traits was predominantly overdominance. Both parents contributed toward increased values for anthesis and silk emergence. QTL for increased plant and ear heights were usually contributed by the taller parent, Mo17. Estimated gene action for these traits was mainly partial to overdominance. QTL for plant height were located in the vicinity of loci defined by alleles with qualitative effects on plant height.