QTL mapping of plant height and ear position in maize (&lt;I&gt;Zea mays&lt;/I&gt; L.)

Yang, Xiaojun; Ming, Lu; Zhang, Shihuang; Zhou, Fang; Qu, Yanying; Xie, Chuanxiao

doi:10.3724/sp.j.1005.2008.01477

Cited by 21 publications

(22 citation statements)

References 9 publications

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“…The missing proportion of the genotypes was 6.1%. The distribution of these SSR markers was consistent with publicly available published linkage maps (Lima et al, 2006;Frascaroli et al, 2007;Yang et al, 2008) and the integrated map in the maize genome database (www.maizegdb.org). …”

supporting

confidence: 57%

The maternal cytoplasmic environment may be involved in the viability selection of gametes and zygotes

Tang¹,

Wang²,

Zhang³

et al. 2012

Heredity

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Segregation distortion is the phenomenon whereby the observed genotypic frequencies of a locus fall outside the expected Mendelian segregation ratio, and it is increasingly recognised as a potentially powerful evolutionary force. The main reason for segregation distortion is a difference in the viability of gametes and zygotes caused by viability loci in the segregating progeny. However, the maternal cytoplasm may also be involved in the viability selection of gametes and zygotes. The objectives of this study were to map the segregation distortion loci (SDL) in maize and to test the hypothesis that the viability of gametes and zygotes may also be associated with the maternal cytoplasmic environment. In the present study, a reciprocal mating design was conducted to generate an F2-segregating population. A linkage map was constructed with 126 microsatellite markers. A whole-genome scan was performed to detect the SDL in segregating populations with different maternal cytoplasm environments. Altogether, 14 SDL with strong LOD (logarithm (base 10) of odds) supports were identified in the specifically designed F2 populations. Interestingly, we found dramatic changes in the genotypic frequencies of the SDL in the two maternal cytoplasmic backgrounds, which indicated a change in the viability of gametes and zygotes in different cytoplasmic environments. Furthermore, in the JB cytoplasmic background, most of the detected SDL and complete distortion markers exhibited similar bias patterns favouring the Y53 alleles. These results suggested that selfish cytoplasmic elements may have an important role in shaping the patterns of segregation distortion in F2 populations through selective viability of gametes and zygotes. Heredity Keywords: segregation distortion; cytoplasm; selection; viability; maize INTRODUCTION Segregation distortion, also called transmission ratio distortion, is the phenomenon whereby alleles at a locus deviate from the Mendelian expectation. This phenomenon has been described in many species, including maize (Lu et al., 2002), rice (Yamagishi et al., 2010), eggplant (Barchi et al., 2010), alfalfa (Li et al., 2011), mouse (Casellas et al., 2010 and drosophila (Orr and Irving, 2005;Phadnis, 2011). These alleles, also called segregation distorters, might alter the transmission ratio in specific cases and are considered selfish genetic elements that manipulate Mendelian transmission to their own advantage (Hurst and Werren, 2001;Phadnis and Orr, 2009;Werren, 2011). Evolutionary research suggests that segregation distorters may be involved in promoting population divergence and, ultimately, speciation (Phadnis and Orr, 2009;McDermott and Noor, 2010). A variety of physiological and genetic factors may explain the observed segregation distortion. For example, meiotic drive, the preferential selection that occurs during meiosis, may cause certain alleles to be overrepresented in the gametes (McDermott and Noor, 2010). As a result, distorted Mendelian ratios may be observed in offspring that have undergone genot...

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supporting

confidence: 57%

The maternal cytoplasmic environment may be involved in the viability selection of gametes and zygotes

Tang¹,

Wang²,

Zhang³

et al. 2012

Heredity

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“…But, different parental lines probably provide different results in QTL number, position or effect. For example, Zhang et al identified nine QTLs for plant height using the two parents R15 and 478, with two, one, four, one and one on chromosomes 2, 3, 4, 8 and 9, respectively [7]; while in the report by Yang et al, Ye478 and Dan340 were used as parental lines, and twenty-one QTLs for plant height were identified on chromosomes on 1(seven), 2 (three), 3 (three), 5 (three), 7 (two), 8 (one) and 10 (two) [8]. Additionally, previous segregation populations used to detect the QTL for maize plant height were focused on temporal F 2 [9,10], while recombinant inbred line (RIL) population possessing the merit immortality were seldom applied [11].…”

Section: Introductionmentioning

confidence: 99%

Notice of Retraction: Study on QTL Identification Associated with Plant Height in Maize (Zea mays L.)

Zhang

Liu

et al. 2011

2011 5th International Conference on Bioinformatics and Biomedical Engineering

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Plant height is one of the most important agronomic traits in maize (Zea mays L.), related to morphology, lodging and yield. To realize more clearly its genetic basis, in this study, the quantitative trait loci (QTLs) for plant height were identified using a recombinant inbred line (RIL) population consisting of 239 RILs derived from the cross between the two maize inbred lines Mo17 and Huangzao4. As a result, three QTLs were mapped on chromosomes 1, 6 and 9. The QTL on chromosome 1 has a mapping interval of 5 cM near to its adjacent markers, could explain 17.94% of phenotypic variation, due to additive effect, it could make plant height increase 9.67 cm. The two QTLs on chromosomes 6 and 9 were quite near to their adjacent markers, with a mapping interval of 0 cM, they could severally account for 41.98 and 4.89% of phenotypic variation; owing to additive effects, they could decrease plant height 2.66 and 5.04 cm, respectively. According to the phenotypic values of parental lines and the additive-effect values of the three QTLs, it was concluded that the QTL on chromosome 1 was from Mo17, while the other two were from Huanzao4.

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“…There have been many studies that aimed to identify QTL for ear height in maize (Zhang et al, 2006a;Yang et al, 2008;Bai et al, 2010), and some QTL were located on different chromosomes of maize. Compared to previous studies, our results were different in terms of QTL number, location, and genetic effects.…”

Section: Discussionmentioning

confidence: 99%

“…Currently, there are many studies on the QTL that affect agronomic traits in maize, such as yield (Coque and Gallais, 2006;Ribaut et al, 2007), florescence (Szalma et al, 2007;Liu et al, 2010), and plant morphology (Ku et al, 2010). With respect to the ear height trait, some QTL were also identified from published reports (Kraja and Dudley, 2000;Flint-Garcia et al, 2003;Lima et al, 2006;Yang et al, 2008). Nevertheless, different studies provided different results, including QTL number, distribution, and genetic effect.…”

Section: Introductionmentioning

confidence: 99%

Quantitative trait locus analysis for ear height in maize based on a recombinant inbred line population

Li¹,

Zhang

et al. 2014

Genet. Mol. Res.

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ABSTRACT. Maize (Zea mays L.) is among the crops with the greatest worldwide economic importance. Ear height is a very important trait that is considered necessary in maize and is related to morphology, lodging, and yield. To realize its genetic basis, an F 9 recombinant inbred line population and a genetic map consisting of 101 simple sequence repeat markers were used to detect the quantitative trait locus (QTL) for ear height, and the result showed that one QTL on chromosome 1 was identified with a mapping interval of 5 cM to its linked marker Umc1358. The QTL from elite inbred line Mo17 could explain 9.55% of the phenotypic variance, and because of the additive effect, it could result in an ear height increase of 4.86 cm. This result was beneficial for understanding the genetic basis of ear height in maize.

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QTL mapping of plant height and ear position in maize (<I>Zea mays</I> L.)

Cited by 21 publications

References 9 publications

The maternal cytoplasmic environment may be involved in the viability selection of gametes and zygotes

The maternal cytoplasmic environment may be involved in the viability selection of gametes and zygotes

Notice of Retraction: Study on QTL Identification Associated with Plant Height in Maize (Zea mays L.)

Quantitative trait locus analysis for ear height in maize based on a recombinant inbred line population

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