Heterosis in soybeans for seed yield components and associated traits

Pandini, Fábio; Vello, Natal Antônio; Lopes, Ângela Célis de Almeida

doi:10.1590/s1516-89132002000600001

Cited by 25 publications

(24 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This connection can be explained by the translocation of photosynthates to produce higher number of pods which implies the portion of these which will be translocated to the grains will be smaller. Pandini et al (2002) evaluated correlations between traits in soybean and reported the character number of pods per plant have potential for indirect selection of more productive genotypes. According to these authors, the characters of agronomic value may be correlated in different magnitudes.…”

Section: Resultsmentioning

confidence: 99%

Correlation between yield components in F6 soybean progenies derived from seven biparental crosses

Sousa¹,

Júnior²,

Romanato³

et al. 2015

Biosci. J.

View full text Add to dashboard Cite

ABSTRACT:Breeding programs strive to obtain cultivars with superior traits. The association between these characters, such as those estimated by correlation coeficients, are important to the breeding selection process. In this study we analyzed phenotypic and genotypic correlations between yield and other agronomic traits in soybean progenies derived from various crosses to support breeding line selection in the soybean breading program of the Federal University of Uberlandia (UFU). The experiment was carried out in the 2011/2012 growing season at the Capim Branco research station in Uberlandia, Minas Gerais, Brazil. Seventy-one soybean lines were evaluated using a randomized complete block design with three replications. In these plots plants were evaluated for the number of pods, grain yield per plant, number of days for flowering, plant height at flowering, number of days for maturity, plant height at maturity, height of the first pod insertion, number of grains per pod and grain yield per plant. The estimates for genotypic correlations were equal or greater than those for the phenotypic correlations for all the evaluated traits. This suggests a small effect of environmental factors on the trait expression. An exception of this behavior was the correlation between plant height at flowering and plant height at maturity. In this case, although the signs for the genotypic and phenotypic correlations were the same, the value for the last was greater than that for the former. The late flowering and late-maturing plants were taller. Also, selecting plants for higher number of pods ultimately contributed for the selection of plants with higher grain yield. The selection of late-flowering and late-maturing plants have yielded taller plantsin the same way that the selection for a higher pod number could promote the selection and improvement of grains yield trait.

show abstract

Section: Resultsmentioning

confidence: 99%

Correlation between yield components in F6 soybean progenies derived from seven biparental crosses

Sousa¹,

Júnior²,

Romanato³

et al. 2015

Biosci. J.

View full text Add to dashboard Cite

show abstract

“…In our study, the number of pods plot -1 was the trait of strongest direct influence (1.179) in a favorable sense on the grain yield; this trait should therefore be considered when aiming at the selection of productive genotypes. In soybean, the number of pods plant -1 also presented a potential for indirect selection of genotypes with higher yield (Pandini et al 2002). According to Wynne and Coffelt…”

Section: Resultsmentioning

confidence: 99%

“…The partitioning of the coefficient of correlation by the path analysis, developed initially by Sewall Wright according to Li (1956), consisted in the study of the direct and indirect effects of traits on a basic variable, whose estimates are obtained by regression equations in which the variables are previously standardized. Knowledge on the direct and indirect correlations, especially of the yield, allows breeders to use this additional information to discard or promote genotypes of interest (Pandini et al 2002).…”

Section: Methodsmentioning

confidence: 99%

Correlations and path analysis in peanut

Gomes

Lopes²

2005

CBAB

View full text Add to dashboard Cite

show abstract

“…The knowledge of direct and indirect correlations about determined yield component, especially grain yield, enables the breeder to use this additional information to precisely discard or promote the genotypes of interest (Pandini et al, 2002). The correlation between traits allows the indirect selection of a quantitative trait of difficult gain with selection, through the selection of another trait directly correlated to it, with greater genetic gain or easy visual selection (Pipolo et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Path analysis of agronomic traits in soybean cultivars with determinate and indeterminate growing habits

Szareski¹,

Carvalho²,

Demari³

et al. 2018

Aust J Crop Sci

View full text Add to dashboard Cite

The aim of this study was to determine associations of cause and effect agronomic traits with grain yield in contrasting growth habits of soybean genotypes, as well as to verify the magnitude of similar behaviors in different growing environments. The trials were conducted for one crop season using randomized blocks design arranged in factorial scheme, including two growing environments (Independência -RS and Tenente Portela -RS) x four genotypes (FPS Solimões RR e FPS Júpiter RR; BRS Tordilha RR and Fepagro 36 RR, 2 indeterminate and 2 determinate growing habits, respectively) in three replications. Ten important soybean yield components were evaluated. The data were subjected to individual analysis of variance for each environment and growing habits. For each environment within habits, the phenotypic path analysis was performed among the traits. The components number of pods on the main stem, number of ramifications, number of pods in the ramifications, and number of one and two-grain pods presented contrasting results in growing environments. The number of three-grain pods is among the components mostly related to grain yield for both determinate and indeterminate growing habit genotypes, regardless of the environment. The adoption of genotypes with higher weight of thousand grains may provide satisfactory results for grain yield, regardless of the growth habit and environment of cultivation.

show abstract

Heterosis in soybeans for seed yield components and associated traits

Cited by 25 publications

References 6 publications

Correlation between yield components in F6 soybean progenies derived from seven biparental crosses

Correlation between yield components in F6 soybean progenies derived from seven biparental crosses

Correlations and path analysis in peanut

Path analysis of agronomic traits in soybean cultivars with determinate and indeterminate growing habits

Contact Info

Product

Resources

About