A new partial diallel model adapted to analyze reciprocal effects in grain yield of maize

Barata, Nazaré Mateus; Scapim, Carlos Alberto; Guedes, Terezinha Aparecida; Janeiro, Vanderly; Pinto, Ronald José Barth; Contreras‐Soto, Rodrigo Iván; Kuki, Maurício Carlos

doi:10.1590/1984-70332019v19n1a04

Cited by 8 publications

(7 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in the present study, the correlation estimates for SCA remained high in circulant models without the presence of parents in most of the environments tested and with numbers of crosses of less than half the number of parents. These results are in agreement with Zare et al (2011) and Barata et al (2019), who found it is possible to disregard reciprocal crosses, since their effects are not significant for GY.…”

Section: G Inocente Et Alsupporting

confidence: 93%

Heritability and combined parental information to define the number of crosses in circulant diallels

Inocente

Garbuglio

Araújo

et al. 2021

Crop Breed. Appl. Biotechnol.

View full text Add to dashboard Cite

In many agricultural crops, the number of parents used in cross breeding make it difficult to obtain all possible hybrids in diallels. Therefore, using maize as a model plant and based on traits with high and low heritabilities, the aim of the present study was to quantify the correlation estimates of the general combining ability (GCA) and specific combining ability (SCA) between a complete diallel and a circulant diallel, with and without the inclusion of parents. For the high heritability trait, the GCA estimates can be obtained with low s values, whereas for the SCA estimates, s values close to half the number of parents should be used. For the low heritability trait, information from parents must be used to obtain the SCA estimates. For the GCA estimates, considering the stabilization of r above 0.70 for s=7, s values greater than half the number of parents must be used in the circulant models.

show abstract

Section: G Inocente Et Alsupporting

confidence: 93%

Heritability and combined parental information to define the number of crosses in circulant diallels

Inocente

Garbuglio

Araújo

et al. 2021

Crop Breed. Appl. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…Although diallel crosses are widely used in plant breeding in many species (Qian et al, 2016;Seyyed-Nazari et al, 2016;Abigail;Ramsey, 2019;Barata et al, 2019), no report was found of its use to assess several characteristics simultaneously using an index. Considering the mean of the two locations, the two parents with the highest mean were numbers 3 and 6.…”

Section: Resultsmentioning

confidence: 99%

Combining ability of standardized indices for multi-trait selection in tobacco

et al. 2021

View full text Add to dashboard Cite

Several traits must be simultaneously considered in selection of tobacco cultivars for meeting the requirements of farmers, manufacturers and consumers. Breeders should have an understanding of associations between economically-important traits in order to devise the best strategy to have response to selection for all them. Utilization of selection indices has been shown to be one of the most efficient strategy for selecting for correlated characters. In tobacco, no reports can be found within the academic literature for multiple trait selection. In this study we demonstrate the efficiency of the Sum of the Standardized Variables Index (SSV) for multi-trait selection in tobacco. The method was evaluated using a collection of thirteen inbred lines and hybrids derived using a diallel scheme. The hybrids, parental lines, and checks were evaluated in two field locations. The traits assessed were yield (YLD), general quality index (GQI), leaf stem to lamina ratio, percent total alkaloids, and percent total sugars. We considered weights according to the economic importance of each trait: 0.4 for YLD, 0.3 for GQI and 0.1 for the remaining characters. The SSV index proved to be efficient and easy to interpret, and could be used to generate genetic gain for almost all characters in the desired direction. General combining ability (GCA) explained the larger part of the variation of the index in the diallel analysis. The mean heterosis estimate was 2.02%. Some hybrid combinations exhibited heterosis levels greater than 10%, indicating that increased attention might need to be given to commercialization of F1 hybrids.

show abstract

“…Such variation in performance can be indicative of a reciprocal effect, with the consequence for the adoption of the cultivar to be used as the maternal or paternal parent (Rocha et al 2014); however, it is based on visual verification of performance through graphical analysis, requiring a significance test for the reciprocal effect. These effects may be due to the nuclear genes (maternal effect) and cytoplasmic genes (non-maternal effect) (Barata et al 2019). Easterly et al (2020), who studied 650 F 1 combinations of wheat, reported an insignificant reciprocal effect in grain yield.…”

Section: Descriptive Analysismentioning

confidence: 99%

Mixed model-based Jinks and Pooni method to predict segregating populations in wheat breeding

Mezzomo

Casagrande

Sousa

et al. 2021

Crop Breed. Appl. Biotechnol.

View full text Add to dashboard Cite

The improvement of superior wheat cultivars depends on the identification of promising segregating populations to derive superior lines. A lattice model (8×8) involving 56 F 2 populations and eight parents was conducted in the 2020 cropping season, and grain yield per plant was evaluated for every F 2 population, with further analysis of the population potential by Jinks and Pooni method via REML/BLUP. A total of 5,410 F 2 plants were evaluated in this study. The results showed that the use of genetic variance associated with the individual genotypic value (BLUP) was superior compared with the use of variance and traditional phenotypic values.

show abstract

A new partial diallel model adapted to analyze reciprocal effects in grain yield of maize

Cited by 8 publications

References 17 publications

Heritability and combined parental information to define the number of crosses in circulant diallels

Heritability and combined parental information to define the number of crosses in circulant diallels

Combining ability of standardized indices for multi-trait selection in tobacco

Mixed model-based Jinks and Pooni method to predict segregating populations in wheat breeding

Contact Info

Product

Resources

About