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Plant Genetics   Research Article

Dynamism of the breeding program for irrigated rice in Southeast Brazil

Authors: A.C. Silva Júnior, V.Q. Carneiro, I.G. Santos, W.G Costa, R.D.S. Rosado, C.D. Cruz and P.C. Soares

The estimation of the genotypic replacement rate is aimed at evaluating the performance of breeding programs. Thus, the objective of this study was to evaluate the dynamics of the genetic improvement program of flooded rice, developed in Minas Gerais, during the period from 1993 to 2016. We evaluated 210 lines in three environments between 1993 and 2016, .. Read More»

Genet. Mol. Res. 18(2):
Plant Genetics   Research Article

Marker-Assisted elimination of drought-susceptible accessions in upland rice breeding

Authors: Ariadna Faria Vieira, Gabriel Feresin Pantalião, Fernanda Martins Abreu, Ricardo Dias Silveira, Ana Letycia Basso Garcia, Leandro Gomide Neves, Rosana Pereira Vianello, Adriano Pereira Castro, Claudio Brondani

Breeding for water-deficit tolerance is fundamental to guarantee the sustainability of upland rice production, mainly due to the possibility of an increased frequency of drought episodes due to climate change. This work aimed to identify single nucleotide polymorphism (SNP) markers, derived from RNA sequencing (RNA-Seq), genom.. Read More»

Genet. Mol. Res. 17(1):
gmr16039886
DOI:
10.4238/gmr16039886
Plant Genetics   Research Article

Selection of candidate reference genes and validation for real-time PCR studies in rice plants exposed to low temperatures

Authors: P.A. Auler, L.C. Benitez, M.N. do Amaral, I.L. Vighi, G.S. Rodrigues, L.C. da Maia and E.J.B. Braga

Rice is a cereal that presents a great ability to adapt to different soil and climate conditions. However, as it is a tropical crop with C3 metabolism, it performs better in warm temperatures with high solar radiation. Tolerance to stress caused by low temperatures is a highly complex process that involves various metabolic pa.. Read More»

Genet. Mol. Res. 16(2):
gmr16029695
DOI:
10.4238/gmr16029695
Animal Genetics   Research Article

Development of 1047 insertion-deletion markers for rice genetic studies and breeding

Authors: Y.X. Zeng*, Z.H. Wen*, L.Y. Ma, Z.J. Ji, X.M. Li and C.D. Yang

In this study, a total of 1047 insertion-deletion (InDel) primer pairs distributed across the rice genome were developed and experimentally validated. The primer pairs were designed based on the InDel length polymorphisms between 93-11 (Oryza sativa ssp indica cv.) and Nipponbare (Oryza sativa ssp japonica cv.), aiming for utilization between indica and j.. Read More»

Genet. Mol. Res. 13(4):
2013.October.30.7
DOI:
10.4238/2013.October.30.7
Plant Genetics   Research Article

Roles of the bZIP gene family in rice

Authors: Z.G. E, Y.P. Zhang, J.H. Zhou and L. Wang

The basic leucine zipper (bZIP) genes encode transcription factors involved in the regulation of various biological processes. Similar to WRKY, basic helix-loop-helix, and several other groups of proteins, the bZIP proteins form a superfamily of transcription factors that mediate plant stress responses. In this review, we pres.. Read More»

Genet. Mol. Res. 13(2):
2014.April.16.11
DOI:
10.4238/2014.April.16.11
Plant Genetics   Research Article

Cloning and characterization of the drought-resistance OsRCI2-5 gene in rice (Oryza sativa L.)

Authors: L. Li1, N. Li, S.F. Song, Y.X. Li, X.J. Xia, X.Q. Fu, G.H. Chen and H.F. Deng

The genomic expression profile of the super-hybrid rice Liangyoupeijiu female parent Pei’ai 64S in different tissues at different developmental stages under low temperature, drought, and high temperature stresses were detected using an Affymetrix GeneChip Rice Genome Array to screen upregulated and downregulated genes. I.. Read More»

Genet. Mol. Res. 13(2):
http://dx.doi.org/2014.May.23.13
DOI:
http://dx.doi.org/10.4238/2014.May.23.13
Human Genetics   Research Article

Genome-wide multilocus analysis of intraspecific differentiation in Oryza rufipogon Griff. from China and the influence of introgression from O. sativa L.

Authors: Y.B. Dong, F. Li, X.W. Pei, F. Wang, Q.H. Yuan, H.J. Wu, S.R. Jia, Y.F. Peng

Twenty-five populations of Oryza rufipogon from China and 144 cultivars of Oryza sativa were selected for this study. Based on the DNA fragment of Ehd1-4 and subspecies-specific sequence-tagged site markers in different chromosomes, intraspecific differentiation in O. rufipogon from China was analyzed. The introgression from O.. Read More»

Genet. Mol. Res. 12(4):
2013.December.2.8
DOI:
10.4238/2013.December.2.8
Cytogenomics   Research Article

Characterization of a rice germin-like protein gene promoter

Authors: T. Mahmood T. Yasmin M.I. Haque S.M.S. Naqvi

Germin and germin-like proteins (GLPs) are water-soluble extracellular proteins that are expressed in response to specific environmental and developmental signals. Although some enzymatic activities have also been associated with germin/GLPs, their role in overall metabolism is not fully understood. However, insight into their function may be gained by an.. Read More»

Genet. Mol. Res. 12(1):
2013.February.7.6
DOI:
10.4238/2013.February.7.6
Plant Genetics   Research Article

Mapping quantitative trait loci for nitrogen uptake and utilization efficiency in rice (Oryza sativa L.) at different nitrogen fertilizer levels

Authors: G.J. Dai, S.H. Cheng, Z.T. Hua, M.L. Zhang, H.B. Jiang, Y. Feng, X.H. Shen, Y.A. Su, N. He, Z.B. Ma, X.Q. Ma, S.G. Hou and Y.R. Wang

Genetic improvement is the fundamental basis for improving nitrogen-use efficiency. A better understanding of genetic factors controlling nitrogen uptake and utilization is required for crop genetic improvement. In this study, we identified the quantitative trait loci (QTLs) associated with traits of nitrogen uptake and utilization by using the single-seq.. Read More»

Genet. Mol. Res. 14(3):
http://dx.doi.org/2015.September.8.1
DOI:
http://dx.doi.org/10.4238/2015.September.8.1
Plant Genetics   Research Article

Analysis of genetic diversity and trait correlations among Korean landrace rice (Oryza sativa L.)

Authors: F.P. Li, Y.S. Lee, S.W. Kwon, G. Li and Y.J. Park

This study analyzed 394 Korean rice landrace accessions, including 93 waxy varieties, for polymorphisms using 29 simple sequence repeat (SSR) markers. In total, 381 alleles served as raw data for estimating the genetic diversity (GD) and population structure. The number of alleles per locus ranged from 3 to 44 (average = 13.14.. Read More»

Genet. Mol. Res. 13(3):
2014.April.14.12
DOI:
10.4238/2014.April.14.12