Evaluating the utility of Arabidopsis thaliana as a model for understanding heterosis in hybrid crops

@article{Stokes2007EvaluatingTU,
  title={Evaluating the utility of Arabidopsis thaliana as a model for understanding heterosis in hybrid crops},
  author={David Stokes and Colin Morgan and Carmel M O'Neill and Ian Bancroft},
  journal={Euphytica},
  year={2007},
  volume={156},
  pages={157-171}
}
Despite the phenomenon of heterosis having been used to improve crop productivity for almost a century, there is little understanding of the molecular mechanisms involved. Heterosis has been described recently in the widely used plant model Arabidopsis thaliana. To assess the opportunity afforded by this system, we have developed, through pollination to a male sterile female parent (Ler ms1), a range of hybrids of A. thaliana accessions. We tested this method of hybrid production in A. thaliana… 
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References

SHOWING 1-10 OF 41 REFERENCES
Heterosis for biomass yield and related traits in five hybrids of Arabidopsis thaliana L. Heynh
TLDR
The results encourage the use of Arabidopsis thaliana as a model species for investigating the molecular causes of heterosis, and a proper choice of hybrids is encouraged.
Heterosis of Biomass Production in Arabidopsis. Establishment during Early Development1
TLDR
An important finding was the early onset of heterosis for biomass; in the cross Col-0/C24, differences between parental and hybrid lines in leaf size and dry shoot mass could be detected as early as 10 DAS.
Heterosis: Feeding People and Protecting Natural Resources
TLDR
The purpose of this analysis will be to show how hybrids and heterosis can help to supply food for burgeoning populations and also help to improve environmental health of the global food production system.
Genetic Analysis of Variation in Gene Expression in Arabidopsis thaliana
TLDR
Variation in transcript abundance among three inbred lines and two pairs of reciprocal F1 hybrids of the highly self-fertilizing species Arabidopsis thaliana is examined to contribute to a better understanding of its role in affecting quantitative trait variation at the phenotypic level.
Genetic diversity of oilseed Brassica napus inbred lines based on sequence‐related amplified polymorphism and its relation to hybrid performance
TLDR
Regression analysis revealed a statistically significant relationship between the genetic distance of the parents and seed yield in their hybrid, and their derived mid-parent and high-parent heterosis, so it is possible that some of the SRAP markers might be linked to quantitative trait loci for seed yield.
EMS-induced genic male sterility in Arabidopsis thaliana: A model selection experiment
TLDR
Seeds of Arabidopsis thaliana were treated with EMS to initiate a small-scale selection program for genic male sterility, and six lines of independent origin were obtained, with perfect phenotypic resemblance to the original line.
A biochemical mechanism for hybrid vigour
when present in a hybrid strain then when they are separate in their two homozygous parents. Thus ‘subA new hypothesis is proposed that gives a mechanistic, tractive heterosis’ can be expected where,
Maternal and Reciprocal Effects on Seedling Characters in ARABIDOPSIS THALIANA (L.) Heynh.
TLDR
The presence of significant maternal and/or reciprocal components in both F (1) (1974) and F(1) by tester diallels suggests that differences in maternal cytoplasm rather than maternal genotype per se were responsible for much of the variation resulting from these non-direct genetic effects.
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