Genomic selection with rapid cyclingcycling: Current insights and future prospects

Volpato, Leonardo; Bernardeli, Arthur; Gomez, Francisco E.

doi:10.1590/1984-70332021v21sa27

Cited by 2 publications

(1 citation statement)

References 45 publications

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“…The selection allows new early tests for resistance to witches' broom and black pod rot, both in seedlings and nurseries, as a strategy to accelerate the reproductive age of plants. With the use of genomic selection, it is possible to potentiate selection in forest tree species to improve the yield rate of plants in terms of reproduction, selection, and genetic gain (Grattapaglia et al 2018, Volpato et al 2021.…”

Section: E Santos Et Almentioning

confidence: 99%

Cacao parents help their offsprings to fight witches’ broom and black pod rot infections

Santos

Pires

Monteiro

et al. 2022

Crop Breed. Appl. Biotechnol.

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Searching for new approaches to confer resistance to diseases in plants is one of the main objectives of the Cacao breeding program (CBP). Witches' broom (WB) and black pod rot (BPR) are important cacao diseases in Bahia,Brazil. This study aimed to evaluate the resistance in plants from 40 progenies of genetic crosses between elite clones to natural infection by high levels of Moniliophthora perniciosa and Phytophthora spp. WB and BPR infection assessments were conducted in the field, including evaluation of vegetative brooms (VB), cushion brooms (CB), and total brooms (TB), as well as the percentage of WB-diseased (FRUWB) and BPR-diseased (FRUBPR) fruits. Ten progenies showed resistance to infection in both the canopy and fruits. No significant differences between the progenies were detected for FRUBPR.

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Section: E Santos Et Almentioning

confidence: 99%

Cacao parents help their offsprings to fight witches’ broom and black pod rot infections

Santos

Pires

Monteiro

et al. 2022

Crop Breed. Appl. Biotechnol.

View full text Add to dashboard Cite

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Use of simulation to optimize a sweet corn breeding program: implementing genomic selection and doubled haploid technology

Peixoto,

Coelho,

Leach

et al. 2024

G3: Genes, Genomes, Genetics

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Genomic selection and doubled haploids hold significant potential to enhance genetic gains and shorten breeding cycles across various crops. Here, we utilized stochastic simulations to investigate the best strategies for optimize a sweet corn breeding program. We assessed the effects of incorporating varying proportions of old and new parents into the crossing block (3:1, 1:1, 1:3, and 0:1 ratio, representing different degrees of parental substitution), as well as the implementation of genomic selection in two distinct pipelines: one calibrated using the phenotypes of testcross parents (GSTC scenario) and another using F1 individuals (GSF1). Additionally, we examined scenarios with doubled haploids, both with (DH) and without (DHGS) genomic selection. Across 20 years of simulated breeding, we evaluated scenarios considering traits with varying heritabilities, the presence or absence of genotype-by-environment effects, and two program sizes (50 vs 200 crosses per generation). We also assessed parameters such as parental genetic mean, average genetic variance, hybrid mean, and implementation costs for each scenario. Results indicated that within a conventional selection program, a 1:3 parental substitution ratio (replacing 75% of parents each generation with new lines) yielded the highest performance. Furthermore, the GSTC model outperformed the GSF1 model in enhancing genetic gain. The DHGS model emerged as the most effective, reducing cycle time from 5 to 4 years and enhancing hybrid gains despite increased costs. In conclusion, our findings strongly advocate for the integration of genomic selection and doubled haploids into sweet corn breeding programs, offering accelerated genetic gains and efficiency improvements.

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Genomic selection with rapid cyclingcycling: Current insights and future prospects

Cited by 2 publications

References 45 publications

Cacao parents help their offsprings to fight witches’ broom and black pod rot infections

Cacao parents help their offsprings to fight witches’ broom and black pod rot infections

Use of simulation to optimize a sweet corn breeding program: implementing genomic selection and doubled haploid technology

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