Genotype and environment interaction on soybean yield in Mato Grosso State, Brazil

Toledo, J.F.; Carvalho, C. G. P. de; Arias, Carlos A.; Almeida, Leones Alves de; Brogin, Rodrigo Luis; Oliveira, Marcelo Fernandes de; Moreira, J. U. V.; Ribeiro, Aliny Simony; Hiromoto, Dario Minoru

doi:10.1590/s0100-204x2006000500010

Cited by 7 publications

(5 citation statements)

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“…The result of the current study revealed that the tested genotypes, in the designated locations and stipulated years, are quite divergent (Table 1). The two way interactions between genotypes and locations and genotypes and years are all not significant indicating the possibility of selection for wider adaptation from the tested genotypes (Toledo et al ., 2006). Location × year interaction effects were significant at various level of significance of all traits except DM (Table 1).…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity in Ethiopian Durum Wheat (Triticum turgidum var durum) inferred from phenotypic variations

Mengistu

Kidane

Fadda

et al. 2016

Plant Genet. Resour.

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The valorization of genetic diversities of major crops like wheat may help substantially to feed the world Population. Durum wheat genotypes consisting of 265 farmers' varieties (FVs), which have been cultivated for many centuries in Ethiopia, as well as 24 improved varieties (IMVs) have been recently evaluated in northern Ethiopia. The evaluation has been carried out at two different locations for 2 consecutive years to verify the inherited diversity in FVs for important phenological and agronomic traits; with the intention to provide refined information to breeders and genebank managers. As a result of a careful evaluation, a very significant variation was observed between the FVs and IMVs. A large number of the former have demonstrated superior performance to the latter in terms of mean values of the major traits within the stipulated years and locations. The best performing FV has shown a gain of 20% grain yield over the best IMV. Multivariate analyses revealed that FVs displayed larger genetic diversity than in those IMVs. FVs could therefore be used as donor of useful alleles in durum wheat breeding for improvement of yield per se and other traits of agronomic and phenological importance. The identified stable superior FVs include: 8208, 226834A, 238567, 222426, 226282 could be best candidates for farmers in marginal environments. Genotypes that have shown stable performance for spatial variation such as 204493A, 214357 and 238567; and temporal variation such as 8208, 208479, 214357 and 226834A could be the best candidates for exploitation in future breeding programs.

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Section: Discussionmentioning

confidence: 99%

Genetic diversity in Ethiopian Durum Wheat (Triticum turgidum var durum) inferred from phenotypic variations

Mengistu

Kidane

Fadda

et al. 2016

Plant Genet. Resour.

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“…The cultivars with determinate growth habit that were better adapted for the South Region of Brazil until 2000 had a maturity ranging between 120 and 125 d (Specht et al., 2014; Toledo et al., 2006). After 2000 there was a need to obtain earlier cultivars, which allowed double cropping of soybean with corn ( Zea mays ) or cotton ( Gossypium hirsutum L.) in a single season, and which favored the control of Asian soybean rust ( Phakopsora pachyrhizi ) that was emerging in Brazil (Specht et al., 2014; Toledo et al., 2006). However, determinate‐type cultivars that matured in less than 115 to 120 d presented low yield potential, as they needed a minimum period of time before flowering to reach an adequate development (Specht et al., 2014).…”

Section: Resultsmentioning

confidence: 99%

“…It is worth mentioning that, although the set of cultivars evaluated in this study did not show significant changes in DM over the years, the number of early cultivars released in the Midwest Region has increased over the last few years, as observed for the South Region in the present study. In the Midwest Region, there was also a need to use early cultivars that allowed double cropping with corn or cotton in the same season, in addition to favoring the control of Asian soybean rust (Specht et al., 2014; Toledo et al., 2006). The introduction of indeterminate growth‐habit germplasm in Midwest Region also showed yield potential combined with earliness, which until then were difficult to obtain with determinate growth‐habit cultivars (Specht et al., 2014).…”

Section: Resultsmentioning

confidence: 99%

Genetic improvement of soybeans in Brazil: South and Midwest regions

et al. 2022

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Soybean [Glycine max (L.) Merril] is one of the main crops produced worldwide, and on‐farm yields have increased considerably in the last decades in Brazil. We evaluated the genetic gain for agronomic, phenological, and end‐use quality traits in 29 cultivars in the South Region, and in 38 cultivars in the Midwest Region in Brazil, released from 1966 to 2011. Field trials were conducted in Macroregions 1, 2, and 4, in 2016–2017, 2017–2018, and 2018–2019 crop seasons. The best linear unbiased predictors (BLUP) of the cultivars were obtained for each trait using a linear model. The BLUPs were regressed with the year of release using linear and quadratic regression models. The rates of genetic gain for seed yield ranged from 11.98 to 15.31 kg ha–1 yr–1 (0.33 to 0.42% yr–1) in the South Region, and from 13.58 to 21.84 kg ha–1 yr–1 (0.47 to 0.77% yr–1) in the Midwest Region. New cultivars presented taller plants and more seed oil content, oil and protein yield, and lower seed weight, days to flowering, days to maturity, and seed protein content than old cultivars in the South Region, although with differences between the Macroregions. In the Midwest Region, new cultivars showed higher seed oil content, oil and protein yield, and lower bottom pod height and seed protein content than old cultivars. Our results showed that breeding programs have been efficient to improve soybean yield and other traits across the years, without yield plateaus in sight.

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“…Due to the difficulty of recommending cultivars as a function of the genotype x environment interaction, it is necessary to perform tests on a larger number of sites (Carvalho et al, 2002;Toledo et al, 2006). In the state of Goiás, for example, there is a wide variability of growing conditions.…”

Section: Introductionmentioning

confidence: 99%

Agronomic performance of transgenic soybean cultivars in Brazilian Cerrado

Costa¹,

Silva

Simon

et al. 2019

Acta Sci. Agron.

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The productive capacity of soybeans is associated with the adaptation of the culture to the cultivation environment. Factors such as a high number of pods, the weight of a thousand grains, and grain number are essential factors in determining cultivars of high productive potential. The launching of new varieties associated with new technologies makes it necessary to know the performance of these varieties in different growing environments. This study aimed to analyze the agronomic performance of transgenic soybean cultivars under Cerrado conditions. The experimental design used completely randomized blocks; six of the twelve cultivars used RR1 technology and the remaining six used RR2BT. The cultivars were grown in five distinct locations in the southwest region of Goiás. The results demonstrated no increments in the grain yield of the RR1 or RR2BT technologies and the precocity of the cultivars also did not favor an increase in grain yield. The localities of Jataí and Rio Verde did not influence the cultivar cycle.

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Genotype and environment interaction on soybean yield in Mato Grosso State, Brazil

Cited by 7 publications

References 4 publications

Genetic diversity in Ethiopian Durum Wheat (Triticum turgidum var durum) inferred from phenotypic variations

Genetic diversity in Ethiopian Durum Wheat (Triticum turgidum var durum) inferred from phenotypic variations

Genetic improvement of soybeans in Brazil: South and Midwest regions

Agronomic performance of transgenic soybean cultivars in Brazilian Cerrado

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