Publications by authors named "H Belcram"
Quantitative genetics models have shown that long-term selection responses depend on initial variance and mutational influx. Understanding limits of selection requires quantifying the role of mutational variance. However, correlative responses to selection on nonfocal traits can perturb the selection response on the focal trait; and generations are often confounded with selection environments so that genotype by environment (G×E) interactions are ignored.
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- The study examines the relationship between genetic and phenotypic variations in European crabapple (Malus sylvestris), focusing on how these variations relate to different environmental conditions across Europe.
- Researchers analyzed growth rates and carbon uptake traits of seedlings while also assessing genetic differences through microsatellite loci and methods to understand population divergence.
- Findings revealed ongoing gene flow from domesticated apples into wild populations and significant trait variations among populations; however, historical climate adaptation played a more crucial role than current climatic isolation in shaping genetic differences.
Article Synopsis
- Petal identity is linked to the APETALA3 (AP3) gene lineage, but it’s unclear how this gene network is conserved across different species with petals from various evolutionary backgrounds.
- This study explored the gene regulatory network related to petals in the Ranunculaceae family by analyzing the gene expression differences between wild-type and mutant plants at early developmental stages.
- Findings indicated that, despite different evolutionary origins, a small group of conserved genes is involved in determining petal identity and development across both Ranunculaceae and core eudicots.
Article Synopsis
- Oilseed rape (Brassica napus L.) originated ~7500 years ago from the hybridization of two species, B. rapa and B. oleracea, followed by chromosome doubling, a process known as allopolyploidy.
- The genome study revealed complex interactions between the newly formed An and Cn subgenomes, showing structural and functional exchanges alongside the beginnings of gene loss and expression changes.
- Natural selection in B. napus has notably promoted the reduction of glucosinolate genes while enhancing oil biosynthesis genes, shedding light on how allopolyploidy affects crop evolution and improvement.