Research Article

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Maize; Nitrogen regime; Plant architecture; QTL

Maize (Zea mays L.) is one of the most important cereal crops worldwide, and increasing the grain yield and biomass has been among the most important goals of maize production. The plant architecture can determine the grain yield and biomass to some extent; however, the genetic basis of the link between the plant architecture and grain yield/biomass is unclear. In this study, an ... more

Z.P. Zheng; X.H. Liu
04/03/2012
Days to silking; Maize (Zea mays L.); Nitrogen regime; quantitative trait locus; Recombinant inbred line

Days to silking (DTS) is one of the most important traits in maize (Zea mays). To investigate its genetic basis, a recombinant inbred line population was subjected to high and low nitrogen (N) regimes to detect quantitative trait loci (QTLs) associated with DTS. Three QTLs were identified under the high N regime; these explained 25.4% of the phenotypic variance. Due to additive ... more

Z.P. Zheng; X.H. Liu; Y.B. Huang; X. Wu; C. He; Z. Li
11/18/2013
1000-grain weight; NIL; qsgw7; QTL; Rice

The genetic control of grain weight (GW) remains poorly understood. Quantitative trait loci (QTLs) determining the GW of rice were identified using a natural GW mutant, sgw. Using a segregating population derived from sgw (low GW) and cultivar 9311 ('9311'; indica, high GW), the chromosome segment associated with GW was detected on the short arm of chromosome 7. To validate and further ... more

J.M. Bian; H.H. He; C.J. Li; H. Shi; C.L. Zhu; X.S. Peng; J.R. Fu; X.P. He; X.R. Chen; L.F. Hu; L.J. Ouyang
05/21/2013
Consensus map; Humid; QTL; Quality; Rain-fed agriculture; Wheat

Humid rain-fed agriculture is a special environment for wheat (Triticum aestivum) culture that tends to negatively affect wheat yield and quality. To identify quality characters of wheat in a humid environment, we conducted quality analysis and quantitative trait loci (QTL) detection in a recombinant inbred line whose parent had a high level of quality for several years. We found ... more

H.M. Li; Z.X. Tang; H.Q. Zhang; B.J. Yan; Z.L. Ren
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Genetic diversity; Germplasm conservation; Maize; Random amplified polymorphic DNA

Ten maize accessions (NC-9, A50-2, M-14, B-42, NC-3, T-7, N-48-1, B-34, USSR, and WFTMS) were studied to estimate the genetic distance on molecular level by random amplified polymorphic DNA. These accessions were selected on the basis of their variable responses against different levels of moisture. Twenty-five primers were used to test genetic diversity, of which 14 were observed to be ... more

M. Aslam; F.S. Awan; I.A. Khan; A.I. Khan
09/28/2010
Genetic variation; Maize; Quantitative traits; RAPD markers; Zea mays

We compared DNA-based genetic diversity estimates with conventional estimates by investigating agronomically important traits in maize grown in the northwestern region of Pakistan. RAPD markers were used to characterize 10 commonly cultivated maize genotypes. The same material was tested for phenotypic variation of quantitative traits using replicated field trials. The genetic distances ... more

M.M. Shah; S.W. Hassan; K. Maqbool; I. Shahzadi; A. Pervez
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High amylase; Maize; marker-assisted selection; Starch branching enzyme

The ae (amylose extender) recessive mutant alleles in maize are an important genetic resource for the development of high-amylose cultivars. On the basis of ae allele sequences (from the National Center for Biotechnology Information), the ae mutant alleles were cloned from high-amylose maize and the allelic Ae gene from common maize luyuan92 inbred ... more

F. Chen; S.W. Zhu; Y. Xiang; H.Y. Jiang; B.J. Cheng
06/13/2013
Half-sib; Heritability; Khyber Pakhtunkhwa; Maize; Pahari; Recurrent selection

This research was carried out at the Agriculture Research Farm, Khyber Pakhtunkhwa Agricultural University, Peshawar, and the Cereal Crops Research Institute, Pirsabak, Nowshera, during 2009 and 2010. Half-sib families (HS) derived from the maize variety Pahari in spring crop seasons 2009 and 2010 were developed at the Cereal Crops Research Institute. All HS families were detasseled well ... more

M. Noor; D. Shahwar; H. Rahman; H. Ullah; F. Ali; M. Iqbal; I.A. Shah; I. Ullah
10/20/2014
DNA methylation; Heterosis; Hybrid; Maize; Methylation-sensitive amplification polymorphism

Heterosis is the superior performance of heterozygous individuals and has been widely exploited in plant breeding, although the underlying regulatory mechanisms still remain largely elusive. To understand the molecular basis of heterosis in maize, in this study, roots and leaves at the seedling stage and embryos and endosperm tissues 15 days after fertilization of 2 elite hybrids and ... more

T.J. Liu; L.F. Sun; X.H. Shan; Y. Wu; S.Z. Su; S.P. Li; H.K. Liu; J.Y. Han; Y.P. Yuan
02/25/2014
Feed; Genetically modified organism; Maize; PCR; Soybean

Despite the controversy about genetically modified (GM) plants, they are still incrementally cultivated. In recent years, many food and feed products produced by genetic engineering technology have appeared on store shelves. Controlling the production and legal presentation of GM crops are very important for the environment and human health, especially in terms of long-term consumption. ... more

S. Meriç; Ö. Çakır; N. Turgut-Kara; Ş. Arı

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