Path analyses define criteria that allow to reduce costs in a breeding population of cacao (Theobroma cacao L.)

Bonilla, José Luis Solís; Lopes, Uilson Vanderlei; Colmenero, Alfredo Zamarripa; Valencia, Biaani Beeu Martínez; Arrazate, Carlos Hugo Avendaño; Wong, Julio Alfonso Chia; Gramacho, Karina Peres

doi:10.1007/s11295-022-01554-x

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…In the context of forage production, the complexity arises from its dependence on multiple factors and their interactions. Therefore, understanding these interactions becomes crucial for the genetic improvement of any species (Bonilla et al 2022). In this regard, it is essential to comprehend the traits closely associated with forage production for the selection of superior genotypes.…”

Section: Discussionmentioning

confidence: 99%

REML/BLUP methodology for selection intraspecific hybrids of Paspalum notatum Flügge by multivariate analysis

SILVEIRA,

WEILER,

BRUNES

et al. 2023

An. Acad. Bras. Ciênc.

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The Paspalum genus has potential for further genetic improvement because of its adaptability to different ecosystems and production of high yields for grazing livestock. We estimate the genetic parameters of 195 intraspecific P. notatum hybrids using Restricted Maximum Likelihood (REML), followed by selection based on Best Linear Unbiased Prediction (BLUP) through multivariate analysis. The intraspecific hybrids studied showed considerable genetic variability in the evaluated forage traits, displaying their potential for progression in subsequent stages of the genetic improvement program.Notably, plant height emerged as an important trait for indirect selection to enhance forage production. The use of the REML/BLUP procedure proves to be a robust tool for data analysis, particularly for perennial species. Furthermore, multivariate analysis based on BLUPs should be used in the selection process within breeding programs.Based on the BLUP values, hybrids D3, D16, C17, C2 and B17 were identified as superior for forage production, and they hold promise for future breeding programs for future breeding initiatives aimed at direct selection to improve yield.

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Section: Discussionmentioning

confidence: 99%

REML/BLUP methodology for selection intraspecific hybrids of Paspalum notatum Flügge by multivariate analysis

SILVEIRA,

WEILER,

BRUNES

et al. 2023

An. Acad. Bras. Ciênc.

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Genotyping of cacao (Theobroma cacao L.) germplasm resources with SNP markers linked to agronomic traits reveals signs of selection

Nieves-Orduña,

Müller,

Krutovsky

et al. 2024

Tree Genetics & Genomes

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The Amazonian cacao tree or the chocolate tree (Theobroma cacao L.) is cultivated to produce seeds, the valuable raw material for the chocolate industry. However, cacao yield is hampered by diseases and low productivity. Cacao single nucleotide polymorphism (SNP) markers associated with breeding and adaptive traits provide a genetic tool for improving selection and reducing breeding cycles. Here, we genotyped 40 published SNPs associated with disease resistance and 11 SNPs with yield traits in 346 accessions using the MassARRAY® system. These 51 SNPs were identified in different breeding experiments in Costa Rica, Brazil, and Trinidad and Tobago. Four genetic clusters were identified, and two of them were observed in high proportion in managed cacao, characterized by a high proportion of admixed individuals reflecting the man-made hybrids. One cluster overrepresented in managed cacao is associated with the preference to keep superior flavor in cultivated cacao from Criollo ancestry. Introgression of wild material collected in Peru associated with disease resistance to witches’ broom disease (WBD) was also observed. Underutilized genetic resources were observed in managed cacao such as the Guiana cacao, while previous agronomic evaluation has demonstrated its good yield potential. Yield and disease resistance traits (mainly resistance to WBD) show divergence between wild and managed cacao (FST > 0.05) probably reflecting selection during domestication, cultivation, and breeding efforts. Eleven SNPs showed a divergence between wild and managed cacao and can be used to build breeding populations. New collections of wild cacao followed by agronomic evaluations can broaden the genetic base of cultivated cacao, especially for such traits as disease resistance to frosty pod rot (FPR).

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Evaluation of spatial models in the estimation of genetic parameters for incidence of frosty pod rot and production in Theobroma cacao full-sib family trials

Bonilla,

Denis,

Lopes

et al. 2024

Tree Genetics & Genomes

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Path analyses define criteria that allow to reduce costs in a breeding population of cacao (Theobroma cacao L.)

Cited by 3 publications

References 31 publications

REML/BLUP methodology for selection intraspecific hybrids of Paspalum notatum Flügge by multivariate analysis

REML/BLUP methodology for selection intraspecific hybrids of Paspalum notatum Flügge by multivariate analysis

Genotyping of cacao (Theobroma cacao L.) germplasm resources with SNP markers linked to agronomic traits reveals signs of selection

Evaluation of spatial models in the estimation of genetic parameters for incidence of frosty pod rot and production in Theobroma cacao full-sib family trials

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