Genetic parameters and selection strategies for soybean genotypes resistant to the stink bug-complex

Godoi, Cláudio Roberto Cardoso de; Pinheiro, José Baldin

doi:10.1590/s1415-47572009000200020

Cited by 14 publications

(9 citation statements)

References 13 publications

(28 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For GFP, the estimated heritability value was of 0.58, higher than the number found by Godoi and Pinheiro (). The heritability for GFP in the previous work was of 36.06%, in narrow sense.…”

Section: Resultscontrasting

confidence: 62%

See 1 more Smart Citation

Selection of soybean lines exhibiting resistance to stink bug complex in distinct environments

Rocha

Vieira

Ferreira

et al. 2015

Food and Energy Security

Self Cite

View full text Add to dashboard Cite

In soybean, stink bugs are considered the most important pest insect as they feed directly from the grain, causing significant losses in seed yield and quality. The use of resistant genotypes is a promising strategy to control these insects. Focusing on selection of soybean lines with resistance and high yield potential, 251 recombinant inbred lines (RILs), derived from a cross between IAC‐100 (resistant) and CD‐215 (susceptible), were evaluated in two experiments, designed as alpha‐lattice, with three replicates in Piracicaba, during the growing seasons of 2012/13 and 2013/14. The evaluated traits were as follows: number of days to maturity (NDM), plant height at maturity (PHM), grain filling period (GFP), lodging (L), agronomic value (AV), grain yield (GY), weight of a hundred seeds (WHS), leaf retention (LR), and healthy seeds weight (HSW). Variance components were estimated by the Restricted Maximum Likelihood method (REML). Heritability and selection gain (SG) parameters were also calculated. Selection was carried out based on 2012/13 season, considering the genotypes that exhibited a minimum HSW of 2908.26 kg ha−1 (acceptable losses of 20% from the average GY). Insect population was monitored by cloth beating. An increase in stink bug population was observed during the grain filling period, with the highest population density occurring in the season 2012/13. Estimates of the variance components demonstrated the elevate influence of the interaction genotype x environment on GY and HSW, which exhibited the lowest estimates of heritability (23 and 34%, respectively). The estimate selection gain, calculated from the predicted means of GY and HSW, was of 665.4 and 482.4 kg ha−1 season 2012/13. Therefore, the applied selection allowed the identification of the genotypes exhibiting higher yields and resistance to the stink bug complex. From the RIL population, lines or genotypes potentially useful to generate novel cultivars were identified.

show abstract

“…For GFP, the estimated heritability value was of 0.58, higher than the number found by Godoi and Pinheiro (). The heritability for GFP in the previous work was of 36.06%, in narrow sense.…”

Section: Resultscontrasting

confidence: 62%

“…Estimates based on genotypes mean tend to result in higher values of heritability, as the effect of the residual variance is divided by the number of blocks and by the number of locations. For LR, heritability value was of 67%, also superior to 20% found by Godoi and Pinheiro () and 20.6%, by Santos ().…”

Section: Resultsmentioning

confidence: 48%

Selection of soybean lines exhibiting resistance to stink bug complex in distinct environments

Rocha

Vieira

Ferreira

et al. 2015

Food and Energy Security

Self Cite

View full text Add to dashboard Cite

show abstract

“…For example, ‘PI 274454’ was found to contribute exclusively to group B, but only with approximately 1.56%. These low-contributing exclusive ancestors are probably due to their restricted use in cultivar development to transfer certain specific characteristics, as is the case of ‘PI 274454’ mentioned above, which is reported to be an insect-resistant cultivar that contributed to the pedigree of ‘IAC-100’, a moderately insect-resistant Brazilian cultivar (Fernandes et al , 1994; de Godoi and Pinheiro 2009). …”

Section: Discussionmentioning

confidence: 99%

Genetic structure and a selected core set of brazilian soybean cultivars

et al. 2013

Self Cite

View full text Add to dashboard Cite

Soybean is one of the most valuable and profitable oil crop species and a thorough knowledge of the genetic structure of this crop is necessary for developing the best breeding strategies. In this study, a representative collection of soybean cultivars recommended for farming in all Brazilian regions was genotyped using 27 simple sequence repeat (SSR) loci. A total of 130 alleles were detected, with an average allelic number of 4.81 per locus. These alleles determined the core set that best represented this soybean germplasm. The Bayesian analysis revealed the presence of two clusters or subgroups within the whole collection (435 soybean cultivars) and the core set (31 entries). Cultivars of similar origin (ancestral) were clustered into the same groups in both analyses. The genetic diversity parameters, based on the SSR loci, revealed high similarity between the whole collection and core set. Differences between the two clusters detected in the core set were attributed more to the frequency of their ancestors than to their genetic base. In terms of ancestry, divergent groups were presented and a panel is shown which may foster efficient breeding programs and aid soybean breeders in planning reliable crossings in the development of new varieties.

show abstract

“…Além do programa do IAC, outros programas de melhoramento de soja no Brasil e no exterior têm utilizado algumas dessas cultivares em hibridações com o objetivo de incorporar os fatores de resistência a insetos presentes nesse germoplasma , Pinheiro et al 2005, Godoi & Pinheiro 2009). Atualmente, têm-se no IAC linhagens selecionadas em ensaios regionais em que se avalia principalmente produtividade, pertencentes a diferentes grupos de maturação e que contêm em sua genealogia genitores com resistência a insetos.…”

unclassified

Produtividade de genótipos de soja sob infestação da lagarta-da-soja e de percevejos

Lourenção¹,

Reco²,

Braga³

et al. 2010

Neotrop. entomol.

View full text Add to dashboard Cite

The productivity criterion was adopted to evaluate stink bug damage. Based on both growing seasons and mainly considering productivity, a few lines could be selected within each maturation group for new fi eld studies or for hybridizations in breeding programs. Among the early germplasm varieties, lines IAC 98-4540, IAC 98-4576, and IAC 98-3123 can be highlighted as promising; the latter also showed little defoliation by A. gemmatalis; in the semi-early group, IAC 98-4017, IAC 98-2663, and IAC 98-4250 were prominent, with steady productivity in both years; in the medium group, IAC 98-4136, the most productive, as well as IAC 98-4140 and IAC 98-4133, all with little defoliation, can be pointed out as promising.

show abstract

Genetic parameters and selection strategies for soybean genotypes resistant to the stink bug-complex

Cited by 14 publications

References 13 publications

Selection of soybean lines exhibiting resistance to stink bug complex in distinct environments

Selection of soybean lines exhibiting resistance to stink bug complex in distinct environments

Genetic structure and a selected core set of brazilian soybean cultivars

Produtividade de genótipos de soja sob infestação da lagarta-da-soja e de percevejos

Contact Info

Product

Resources

About