Estimation of genetic parameters and selection of Brachiaria humidicola progenies using a selection index

Figueiredo, Ulisses José de; Nunes, José Aírton Rodrigues; Valle, Cacilda Borges do

doi:10.1590/s1984-70332012000400002

Cited by 40 publications

(66 citation statements)

References 15 publications

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“…This could be happening between the nutritional variables CP and IVD, CP and NDF, LIG and NDF, LIG and IVD and NDF with IVD. Similar results in terms of correlations were observed in full sib progenies of B. humidicola (Figueiredo et al 2012).…”

Section: Fi Matias Et Alsupporting

confidence: 85%

“…The accuracy of selection is given by Acgem, which were of medium to high magnitude for every trait in the joint analysis for this experiment, indicating a suitable experimental precision. Similar values of accuracy for agronomic and nutritional characters were observed in progenies of B. humidicola in nine clippings (Figueiredo et al 2012). In general, estimates of Acgem for the dry season were higher than those for the rainy season for the nutritional traits, but inferior for the agronomic ones (Table 1).…”

Section: Fi Matias Et Alsupporting

confidence: 68%

“…Gains with selection should be high for productivity during the dry season in this population, since FGW and TDM showed high magnitudes of heritability estimates, 0.74 and 0.65, respectively. These estimates were of greater magnitude than those observed for B. humidicola and Panicum maximum (Figueiredo et al 2012, Braz et al 2013, also evaluated for TDM in the dry season.…”

Section: Fi Matias Et Alcontrasting

confidence: 52%

“…The final regrowth score (REG) was given combining both tiller density regrowth score and speed of regrowth score (1 = less than 20% of tillers regrown; 2 = 20 to 40%; 3 = 40 to 60%; 4 = 60 to 80%; and 5 = more than 80%) and speed of regrowth (1 = low; 2 = medium and 3 = high), as described by Figueiredo et al (2012).…”

Section: Methodsmentioning

confidence: 99%

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Estimate of genetic parameters in Brachiaria decumbens hybrids

Matias

Barrios

Valle

et al. 2016

Crop Breed. Appl. Biotechnol.

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weight (FGW); total dry matter (TDM); speed of regrowth (SR); tiller regrowth density (TRD); regrowth ability (REG); crude protein (CP); in vitro organic matter digestibility (IVD); neutral detergent fiber (NDF) and lignin (LIG). The statistical analyses were carried out using the mixed models methods. Genetic variability for all traits assessed was detected, and estimates of individual heritability were of medium to high magnitude, indicating the possibility of gains with selection. Significant genetic correlations were observed between FGW and TDM (0.99), TDM and SR (0.81), TDM and LIG (0.71), and CP and IVD (0.70

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Section: Fi Matias Et Alsupporting

confidence: 85%

Section: Fi Matias Et Alsupporting

confidence: 68%

Section: Fi Matias Et Alcontrasting

confidence: 52%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Estimate of genetic parameters in Brachiaria decumbens hybrids

Matias

Barrios

Valle

et al. 2016

Crop Breed. Appl. Biotechnol.

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“…Brazil is the world's largest beef exporter with the world's largest commercial cattle herd maintained almost exclusively in cultivated pastures, observing animal welfare conditions (Figueiredo et al 2012, Assis et al 2014). This reduces the cost of production, and confers a competitive advantage to the Brazilian beef production system.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of aluminum resistance in hybrids of Brachiaria decumbens Stapf.

Oliveira

Barrios

Chiari

et al. 2015

Crop Breed. Appl. Biotechnol.

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Genetic parameters, prediction, and selection in a white Guinea yam early‐generation breeding population using pedigree information

et al. 2020

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Better understanding of the genetic control of traits in breeding populations is crucial for the selection of superior varieties and parents. This study aimed to assess genetic parameters and breeding values for six essential traits in white Guinea yam (Dioscorea rotundata Poir.) breeding populations. For this, pedigree-based best linear unbiased prediction (P-BLUP) was used. The results This article is protected by copyright. All rights reserved. 2 revealed significant nonadditive genetic variances and medium to high (0.45-0.79) broad-sense heritability estimates for the traits studied. The pattern of associations among the genetic values of the traits suggests that selection based on a multiple-trait selection index has potential for identifying superior breeding lines. Parental breeding values predicted using progeny performance identified 13 clones with high genetic potential for simultaneous improvement of the measured traits in the yam breeding program. Subsets of progeny were identified for inter-mating or further variety testing based on additive genetic and total genetic values. Selection of the top 5% progenies based on the multi-trait index revealed positive genetic gains for fresh tuber yield (t ha-1), tuber yield (kg plant-1), and average tuber weight (kg). However, genetic gain was negative for tuber dry matter content and yam mosaic virus resistance in comparison with standard varieties. Our results show the relevance of P-BLUP for the selection of superior parental clones and progenies with higher breeding values for interbreeding and higher genotypic value for variety development in yam.

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Estimation of genetic parameters and selection of Brachiaria humidicola progenies using a selection index

Abstract: -

Cited by 40 publications

References 15 publications

Estimate of genetic parameters in Brachiaria decumbens hybrids

Estimate of genetic parameters in Brachiaria decumbens hybrids

Evaluation of aluminum resistance in hybrids of Brachiaria decumbens Stapf.

Genetic parameters, prediction, and selection in a white Guinea yam early‐generation breeding population using pedigree information

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