Methods for Advancing Segregating Populations

Silva, Felipe Lopes da; Lüdke, Willian Hytalo; Conte, Murilo Viotto Del; Bueno, Thays Vieira; Silva, Alisson Santos Lopes da

doi:10.1007/978-3-319-57433-2_9

Cited by 3 publications

(5 citation statements)

References 16 publications

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“…Soybean lineages were derived from the doublecrossing between (Guarani x Sambaiba) x (M Soy 6101 x Conquista) on the experimental station of the Federal University of Uberlândia, Latitude 18º 52' 94'' S, Longitude 48º 20' 45'' O, altitude 835m, MG, Brazil. Generations were advanced by the single seed descent (SSD) method of breeding according to Silva et al, 2017. Therefore, we have collected one single seed from each one of the F2 plants, advanced generations by the SSD method (Table 1) until F6, and then, selected seeds from single plants showing superior characteristics.…”

Section: Methodsmentioning

confidence: 99%

“…We have assessed pod dehiscence using a scale ranging from 0 (no dehiscence) to 10 (complete dehiscence); and lodging resistance from 1 (no lodging) to 5 (all plants are prostrate) (Fehr, 1987). To evaluate the productivity of cultivars and lineages, we have assessed yielding per useful plots area; standardized to 13% of humidity and transformed into kilograms per hectare (Silva et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

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Evaluation of soybean breeding lineages to new sources of root-knot nematode resistance

Hamawaki

Nogueira

et al. 2019

Ciênc. agrotec.

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In Brazil, as the soybean crop expands the losses caused by nematodes as well as its incidence in producing areas have increased. Therefore, this work aimed to develop a non-genetically modified soybean which combines desirable traits as the root-knot nematode resistance, early-maturity, high seed yielding, and high oil and protein contents. Consequently, seeds (F2) derived from the double-crossing between (Guarani x Sambaiba) x (M Soy 6101 x Conquista) were bulked to grow the F3 generation. Following generations were advanced by the SSD method of breeding until F6. Thus, plants showing superior characteristics were planted separately to perform progeny tests and then advanced breeding lines were thoroughly tested and compared to standards in representative environments across several locations in the Midwestern region in Brazil. As a result, we developed an early-soybean with cycle-length of 107 days; usually cycles range from 90 to 160 days. It presents desirable traits as high yield (3677 kg ha-1), Brazilian national average ranged between 2.5 and 3 thousand kg ha-1; broad adaptability, with 19% of oil, and 38.4% of protein on the seeds. Oil and protein standard contents are 20% and 40%, respectively. In addition, it is root-knot nematode (Pratylenchus brachyurus) resistance, not differing statistically (RF = 1.70) from the expected value given by Crotalaria spectabilis (RF = 1.14). Accordingly, we recommend this new cultivar to producers that intend to grow a second crop of either corn or cotton in the summer, or for crop producing areas with high incidence of P. brachyurus.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Evaluation of soybean breeding lineages to new sources of root-knot nematode resistance

Hamawaki

Nogueira

et al. 2019

Ciênc. agrotec.

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“…Hybridization methods in soybean breeding are very important to development of cultivars with desired agronomic characteristics. Segregating populations from these crossing must be conducted through successive generations of self-pollination and the appropriate method choice for conduction of these populations increases the efficiency of selection of superior lineages (Da Silva et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

New high-yielding conventional soybean adapted to the states of Goiás, Minas Gerais and Mato Grosso, Brazil

Hamawaki

Nogueira

et al. 2018

Acta Sci. Agron.

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This paper aims to present the features of the new soybean cultivar UFUS Milionária, which was developed by the Soybean Improvement Program of the Federal University of Uberlândia (UFU) through crossing between IAC-100 and Cristalina RCH cultivars, using the Single Seed Descent (SSD) method. UFUS Milionária is resistant to many diseases caused by the fungus, bacteria, and virus. In addition, it also has been proved well-adapted to many Brazilian states, showing high yield even under water deficit conditions and Asian-rust infection; average yield was 4,451 kg ha-1 in 2015/16 growing season.

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“…The soybean reproduces by self-fertilization, being considered a perfect autogamous species (Silva et al, 2017a). Therefore, the system of conducting a conventional breeding program consists of artificial hybridizations, to obtain variability and subsequent selffertilization for the selection of genotypes with superior traits.…”

Section: Introductionmentioning

confidence: 99%

“…The fixed genotypes are obtained predominantly in the F6 generation. Thus, during the genotype segregation process, there is no possibility of having replicates for the individuals because each genotype produced is a unique copy (Silva et al, 2017a). Therefore, the existence of nondestructive methods for the evaluation and selection of agronomic traits, such as nearinfrared spectroscopy (NIRS), is a process of extreme importance for the early stages of a breeding program.…”

Section: Introductionmentioning

confidence: 99%

Non-destructive genotypes classification and oil content prediction using near-infrared spectroscopy and chemometric tools in soybean breeding program

Leite

Corrêa

Júnior

et al. 2020

Journal of Food Composition and Analysis

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In soybean (Glycine max L.) breeding programs, segregation is normally observed, and it is not possible to have replicates of individuals because each genotype is a unique copy. Therefore, near-infrared spectroscopy (NIRS) was used as a nondestructive tool to classify soybeans by genotypes and to predict oil content. A total of 260 soybean genotypes were divided into five classes, which were composed of 32, 52, 82, 46, and 49 samples of the BV, BVV, EB, JAB, and L class, respectively. NIR spectra were obtained using oven-dried samples (80 g) in a reflectance mode. A successive projection algorithm and genetic algorithm with linear discriminant analysis discriminated genotypes of the low (L class) from the high (EB class) for oil content (88.89% accuracy). The partial least square regression models for oil content were considered good (root mean square error of prediction of 0.96%). Therefore, NIRS can be used as a non-destructive tool in soybean breeding programs, but further investigation is necessary to improve the robustness of the models. It is important to note that to use the models, it is necessary to collect NIR spectra from dry soybean samples.

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Methods for Advancing Segregating Populations

Cited by 3 publications

References 16 publications

Evaluation of soybean breeding lineages to new sources of root-knot nematode resistance

Evaluation of soybean breeding lineages to new sources of root-knot nematode resistance

New high-yielding conventional soybean adapted to the states of Goiás, Minas Gerais and Mato Grosso, Brazil

Non-destructive genotypes classification and oil content prediction using near-infrared spectroscopy and chemometric tools in soybean breeding program

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