Research Article

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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

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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

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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
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Ear leaf; Maize; Nitrogen regime; QTL; Recombinant inbred line

The ear leaf is one of the most important leaves in maize (Zea mays); it affects plant morphology and yield. To better understand its genetic basis, we examined ear leaf length, ear leaf width, and ear leaf area for quantitative trait locus (QTL) mapping in a recombinant inbred line population under two nitrogen regimes. Nine QTLs, on chromosomes 1 (one), 2 (one), 3 (one), 4 ( ... more

Z.P. Zheng; X.H. Liu
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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
04/17/2013
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
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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
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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
03/17/2009
Allele dosage; Endosperm constitution; Maize; Semiquantitative polymerase chain reaction

The lack of informativity of samples from heterozygotic individuals is one of the hindrances in the mapping of quantitative trait loci of outbred populations, since it is not normally possible to identify the origin of each allele. One way to include these individuals in analyses would be to genotype their endosperm, considering that a heterozygote (Aa) has AAa or Aaa ... more

F.A. Martins; P.C.S. Carneiro; C.T. Guimarães; J.V. Magalhães; J.E.S. Carneiro; C.D. Cruz
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Expression; FKBPs; Gene duplication; Maize

The receptors for the immunosuppression drugs FK506 and rapamycin are called FKBPs (FK506-binding proteins). FKBPs comprise a large family; they are found in many species, including bacteria, fungi, animals, and plants. As a class of peptidyl-prolyl cis-trans isomerase enzymes, the FKBP genes have been the focus of recent studies on plant stress tolerance and immunology. We ... more

W.W. Wang; Q. Ma; Y. Xiang; S.W. Zhu; B.J. Cheng

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