Maydica Journal Impact Factor & Information

Publisher: Consiglio per la Ricerca e la sperimentazione in Agricoltura, Unità di Ricerca per la Valorizzazione qualitativa dei cereali

Current impact factor: 0.53

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 0.534
2012 Impact Factor 0.368
2011 Impact Factor 0.395
2010 Impact Factor 0.494
2009 Impact Factor 0.565
2008 Impact Factor 0.588
2006 Impact Factor 0.569
2005 Impact Factor 0.247
2004 Impact Factor 0.6
2003 Impact Factor 0.426
2002 Impact Factor 0.397
2001 Impact Factor 0.269
2000 Impact Factor 0.422
1999 Impact Factor 0.446
1998 Impact Factor 0.446
1997 Impact Factor 0.512
1996 Impact Factor 0.557
1995 Impact Factor 0.6
1994 Impact Factor 0.56
1993 Impact Factor 0.43
1992 Impact Factor 0.677

Impact factor over time

Impact factor

Additional details

5-year impact 0.60
Cited half-life 9.90
Immediacy index 0.00
Eigenfactor 0.00
Article influence 0.17
Website Maydica website
ISSN 0025-6153

Publisher details

Consiglio per la Ricerca e la sperimentazione in Agricoltura, Unità di Ricerca per la Valorizzazione qualitativa dei cereali

  • Pre-print
    • Archiving status unclear
  • Post-print
    • Author cannot archive a post-print version
  • Conditions
    • Publisher's version/PDF must be used
    • In departmental or institutional repository
  • Classification
    ​ blue

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Drought stress is a major challenge for the production of maize (Zea mays L), leading to reduced growth of aerial parts and, to a large extent, reproductive stages of development. We applied the 454 GS FLX titanium platform to identify drought differentially regulated genes in the maize vegetative and reproductive tissues. A total of 2,199 genes of which 1,284 in reproductive and 915 in vegetative tissues were identified by the platform. QuantitativeRT-PCR of differentially expressed genes was carried out to confirm their expression. The results showed thatthe transcripts were correctly assembled and represented actively expressed genes, which genes were furthersubjected to gene ontology analysis for biological processes, molecular function and cell component functionalterms. Significantly enriched terms indicates that catabolism of proteins and maintenance of cellular homeostasisprocesses were significantly enriched in the vegetative tissues, while on the other hand carbohydrate metabolism was enriched in the reproductive tissues. Photosynthesis, and energy metabolism as well as protein biosynthesiswere highly repressed in both tissues. These add to the concept that drought stress target photosynthesis andcauses a transition of metabolism from protein synthesis by repressing amino acid biosynthesis and translation to degradation by inducing the ubiquitin-proteasome pathway. Identified genes are potential candidates for maizeimprovement through transgenic and mutagenic approaches.
    Maydica 12/2014; 59(4):306.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The maize inbred line B73 has been extensively studied at the molecular level. Researchers now have access to the genome sequence of B73 as well as to databases of biallelic and multiallelic markers where functional polymorphisms between B73 and a public inbred line population can be compared to relate genotypes to phenotypes. This indicates the importance to determine the genetic fidelity of the germplasm during preservation and propagation processes, in particular, when seeds of reference inbred lines such as B73 are maintained. The aim of this study was to assess the genetic uniformity among three different sources of the B73 inbred line by means of 75 Simple Sequence Repeats (SSRs). The three B73 sources showed homozygosis; however, some accessions differed greatly from the expected locus size predicted at the reference B73 genomic sequence. A particular haplotype was prevalent in the USDA accession PI550473. The error rate of the allele size determination was estimated. The genotyping technique used in this work allowed the separation of alleles of ± 2 bp range difference within the same electrophoresis run, whereas allele size estimations between experiments, within the laboratory, differed in ± 4 bp range difference. Besides experimental errors in genotyping, the putative cause of differences among accessions could be attributed to seed contamination and genetic drift. The B73 accessions evaluated in our work can be shared among laboratories to precise genotyping and phenotyping of maize inbred lines.
    Maydica 01/2014; 59(3):298.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Studies on genetic gains in grain yield in maize (Zea mays L) is crucial to identify traits of potential value and the necessary modifications in breeding methodologies and strategies for increased progress in future breeding efforts. Fifty early-maturing maize cultivars developed during three breeding eras were evaluated for 2 yr in two field experiments involving 16 multiple stress (drought, Striga-infested, and low soil nitrogen) environments and 35 optimum environments to determine the changes in agronomic traits associated with the genetic gains in grain yield over three breeding eras. The average rate of increase in grain yield was 30 kg ha–1 yr-1 corresponding to 1.59% annual genetic gain across multiple stresses. Among the agronomic traits under stress, only ears per plant (0.32% year-1), ear aspect (-0.51% year-1), plant aspect (-0.24% year-1) and days to anthesis (0.11% year-1) changed significantly (P<0.05 or <0.01) during the three eras. The increase in grain yield from the first to the third generation cultivars across stress environments was associated with significant improvements in plant and ear aspects, increased ears per plant and stay green characteristic. Under optimal growing environments, the increase in grain yield from the first to the third generation cultivars was 1.24% per annum and the gain was associated with significant improvements in plant and ear heights, plant and ear aspects, husk cover, and increased ears per plant. The results indicated that substantial progress has been made in breeding for cultivars with combined tolerance/resistance to the three stresses during the past 22 years.
    Maydica 01/2014; 59(1):49-57.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Genetic diversity of an Argentinean public temperate inbred maize collection has not been previously assessed. This collection includes mainly locally developed orange flint germplasm and a group of temperate inbred lines introduced from the US or derived from selection of crosses to genetic stocks from other countries, providing representativeness of exotic gene pools. To establish heterotic groups and patterns for breeding purposes and to assess genetic structure and relatedness for association-mapping studies, a public panel of a 103 maize inbreds was characterized using 50 microsatellite markers and pedigree information. By means of clustering-based and model-based methods the flint germplasm collection was split into two subpopulations that were separated from the BSSS-BS13-related lines. Relatedness estimates with coancestry and kinship coefficients provided additional information in the case of structured mixed membership of some germplasm. These three main subpopulations were in agreement with prior pedigree records. Allele diversity was high and sufficient to give major, minor and specific allele profiles to characterize inbred lines. Convenience of the use of minor allele frequency for structure and relatedness assessment is also discussed. In addition, molecular characterization provided useful information to elucidate inbred ancestry origins of germplasm with unknown pedigree records and to group them into known heterotic groups to define heterotic patterns.
    Maydica 01/2014; 59(1).

  • Maydica 01/2014; 59:80-89.