QTL mapping of nutrient components in maize kernels under low nitrogen conditions

Liu, Z. H.; Xie, Huaan; Tian, G. W.; Chen, S. J.; Wang, C. L.; Hu, Yan; Tang, Jihua

doi:10.1111/j.1439-0523.2007.01465.x

Cited by 21 publications

(19 citation statements)

References 30 publications

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“…While N is a component of protein, so it inferred that lack of nitrogen might reduce grain N content greatly. The similar results also reported by Liu et al (2008) in maize, they showed that the grain yield, grain protein and oil contents in F 2:3 /F 2:4 populations were significantly reduced, but the starch a little increased under Nconditions compared with N+ conditions at two locations.…”

Section: Introductionsupporting

confidence: 88%

Effect of low N- stress to N, P, K contents and quantitative trait locus (QTL) analysis in maize kernels and stalks

Tang¹,

Wang²,

Hu³

et al. 2015

Afr. J. Agric. Res.

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For elucidating the genetic basis of N, P and K contents in kernels and stalks in maize under different nitrogen supply condition, a set of 203 F 2: 4 / F 2: 5 family lines, derived from an elite maize hybrid Nongda108, were tested under nitrogen plus (N+) and no nitrogen plus (N-) treatments in the field over two years, and a genetic linkage map was constructed with 199 SSR molecular markers, covered 2100.9 cm for 10 chromosomes with an average interval length of 10.82 cm. The results showed that low N stress not only affected N content in maize kernels and stalks, but also affected the absorption and transportation of P and K contents in some degree. A total of 34 quantitative trait locus (QTL) including 15 QTLs in kernels and 19 QTLs in stalks for N, P, K content were identified by means of the composite interval mapping method (CIM), of which, 13, 9 and 12 QTLs detected for N, P, K content, respectively. Each QTL could explain the variance of phenotype ranged in turn from 7.30 to 31.09%, 7.57 to 14.3% and 8.11 to 32.82% for three main mineral elements content. The QTL qNC4c, qPC9b, qKC10b as well as qNC4b, qPC5b, qKC6a were main contributing QTL for N, P, K contents in kernels and stalks. Out of these QTLs detected for N, P, K contents in kernels and stalks, the results also implied that the loci derived from Huang C played important roles in N, P, K absorption, while the loci from Xu178 played marked roles in N, P, K transportation from stalks to grains.

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Section: Introductionsupporting

confidence: 88%

Effect of low N- stress to N, P, K contents and quantitative trait locus (QTL) analysis in maize kernels and stalks

Tang¹,

Wang²,

Hu³

et al. 2015

Afr. J. Agric. Res.

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“…또 다른 최근 개발된 옥수수 주요 유전자원으로는 NAM(Nested Association Mapping) 집단이 있는데, NAM 집단(population)은 245 개의 집단에 서 200 개씩 총 5000개의 RIL 계통을 구축해 놓은 옥수수 유전자원 집단이다 (Fig. 1(A) (Liu et al, 2003;Flint-Garcia et al, 2005;Liu et al, 2008). NAM 집단에 사용된 대표적 인 교배친들로는 Suwan(태국계통), Ki3(한발 감수성), Ki11 (한발 저항성) 등이 교배친으로 이용되었으며, 또한 CIMMYT 에서 개발한 열대성 품종 8개(CML52, CML69, CML103, CML228, CML247, CML277, CML322, CML333) 등이 이 용되었다 을 얻을 수 있는 반면 (Messmer et al, 2009;Szalma et al, 2007) (Tuberosa et al, 2002b;Campos et al, 2004;Xu et al, 2009).…”

Section: Ngs(next-generation Sequencing)unclassified

Genetic Improvement of Maize by Marker-Assisted Breeding

Kim¹,

Moon²,

Baek³

et al. 2014

Korean Journal of Crop Science

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Maize is one of the most important food and feed crops in the world including Southeast Asia. In spite of numberous efforts with conventional breeding, the maize productions remain low and the loss of yields by drought and downy mildew are still severe in Asia. Genetic improvement of maize has been performed with molecular marker and genetic engineering. Because maize is one of the most widely studied crop for its own genome and has tremendous diversity and variant, maize is considered as a forefront crop in development and estimation of molecular markers for agricultural useful trait in genetics and breeding. Using QTL (Quantitative Trait Loci) and MAS (Marker Assisted Breeding), molecular breeders are able to accelerate the development of drought tolerance or downy mildew resistance maize genotype. The present paper overviews QTL/MAS approaches towards improvement of maize production against drought and downy mildew. We also discuss here the trends and importance of molecular marker and mapping population in maize breeding.

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“…Currently, most maize in the world is grown under N-deficient conditions because of low N use efficiency, limited availability of fertilizer or low purchasing power of farmers (Ribaut et al, 2007). From the literature, different N regimes have been frequently used to detect QTLs in plant such as rice (Oryza sativa L.) (Lian et al, 2005), maize (Liu et al, 2008) and wheat (Triticum aestivum L.) , but studies on QTL mapping for maize KNE under different N regimes have been rarely reported (Agrama et al, 1999). Accordingly, it is meaningful that different N regimes that affect KNE in maize are used for QTL mapping.…”

Section: Introductionmentioning

confidence: 99%

Genetic loci mapping associated with maize kernel number per ear based on a recombinant inbred line population grown under different nitrogen regimes

Liu

He²,

Zheng³

et al. 2011

Genet. Mol. Res.

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ABSTRACT. Kernel number per ear (KNE) is one of the most important yield-related agronomic traits in maize (Zea mays). To clarify its genetic basis, we made a quantitative trait locus (QTL) analysis of KNE in a recombinant inbred line population derived from lines Mo17 and Huangzao4, under two nitrogen (N) regimes. Seven QTLs, on chromosomes 4, 6 and 9, were mapped under the high N regime, which explained phenotypic variation ranging from 5.03 to 15.49%. Under the low N regime, three QTLs were located on chromosomes 6 and 9, which accounted for phenotypic variation ranging from 8.54 to 12.21%. These QTLs had different mapping intervals to their nearest markers, ranging from 0 to 16.5 cM. According to the chromosome positions and genetic effects of these QTLs, only seven QTLs for KNE were identified in our experiment, out of which three were found under both N regimes, on chromosomes 6 (one) and 9 (two); the other four were mapped only under the high N regime, on chromosomes 4 (three) and 6 (one). This information could be useful for developing marker-assisted selection in maize-breeding projects.

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QTL mapping of nutrient components in maize kernels under low nitrogen conditions

Cited by 21 publications

References 30 publications

Effect of low N- stress to N, P, K contents and quantitative trait locus (QTL) analysis in maize kernels and stalks

Effect of low N- stress to N, P, K contents and quantitative trait locus (QTL) analysis in maize kernels and stalks

Genetic Improvement of Maize by Marker-Assisted Breeding

Genetic loci mapping associated with maize kernel number per ear based on a recombinant inbred line population grown under different nitrogen regimes

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