Roberto Fritsche-Neto results 28
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A new environmental-based tool to support forest breeders in selecting species adapted to current and near-term climate conditionsNARA Subscribed
This study presents SST (Species Selection Tool), a climate-based framework designed to support species selection across geographic regions and climate scenarios. The tool was developed to enable breeders to examine species selection scenarios across countries and climate horizons. Beyond identifying promising species for testing, SST prioritizes candidate species, highlights opportunities for germplasm exchange, anticipates c...
Key message Designing genomic selection to capture the additive and epistatic effects. Abstract Genomic selection (GS) offers great potential to accelerate long-term genetic gain, but strategic decisions such as progeny size and number of crosses remain poorly established, particularly under contrasting resource scenarios. We conducted stochastic simulations of rice breeding programs over 50 years (10 cycles) using progeny siz...
Key message Strategic resource allocation in breeding programs is key to balancing cost-effectiveness and genetic improvement. Abstract This research aimed to understand the critical role of adopting advanced breeding tools and optimizing breeding strategies to ensure the sustainability and success of public breeding programs in meeting future food security challenges. In this context, there are two main objectives: estimate t...
Key message In a genome-wide association study involving 269 cultivated and wild soybean accessions, potential salt tolerance donors were identified along with significant markers and candidate genes, such as GmKUP6 and GmWRKY33 . Abstract Salt stress remains a significant challenge in agricultural systems, notably impacting soybean productivity worldwide. A comprehensive genome-wide association study (GWAS) was conducted to e...
Genomic prediction and QTL analysis for grain Zn content and yield in Aus-derived rice populationsNARA Subscribed
Zinc (Zn) biofortification of rice can address Zn malnutrition in Asia. Identification and introgression of QTLs for grain Zn content and yield (YLD) can improve the efficiency of rice Zn biofortification. In four rice populations we detected 56 QTLs for seven traits by inclusive composite interval mapping (ICIM), and 16 QTLs for two traits (YLD and Zn) by association mapping. The phenotypic variance (PV) varied from 4.5% ( qP...
Key message Schemes that use genomic prediction outperform others, updating testers increases hybrid genetic gain, and larger population sizes tend to have higher genetic gain and less depletion of genetic variance Abstract One of the most common methods to improve hybrid performance is reciprocal recurrent selection (RRS). Genomic prediction (GP) can be used to increase genetic gain in RRS by reducing cycle length, but it is...
Female reproductive organs of Brassica napus are more sensitive than male to transient heat stressNARA Subscribed
Oilseed rape ( Brassica napus L.) is sensitive to heat stress during the reproductive stage, but it is not clear whether the male and female reproductive organs differ in their sensitivity to heat stress. In this study, full diallel crossing experiments were conducted among four genotypes of B. napus under control, moderate and high heat stress conditions for five days immediately before and two days after crossing. General co...