Divergência genética em milho para baixo e alto nitrogênio visando à produção de óleo e proteína

Sodré, Layanni Ferreira; Santos, Weder Ferreira dos; Ascêncio, Sérgio Donizeti; Pelúzio, Joênes Mucci; Silva, Rafael Marcelino da; Reina, Evandro

doi:10.12661/pap.2017.009

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Measures of genetic dissimilarity, estimated from the distance of Mahalanobis (Table 3), presented a high magnitude (9.72 the 70.70), indicating the presence of genetic variability among genotypes. Sodré et al [26] found the magnitude of D 2 from 0.4 the 328.7 and Santos et al [22] found magnitude (D 2 = 4.0 the 644.6) corn crop. In parentheses are represents cultivar(s).…”

Section: Resultsmentioning

confidence: 99%

Analysis of genetic divergence through agronomic characters in green corn cultivars

Coutas¹,

Santos²,

Ribeiro³

et al. 2021

IJAERS

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The genetic divergence in maize populations is important, as it allows us to identify among the existing genotypes, the best ones to be used as parents in future breeding programs as a strategy for obtaining greater gains. Therefore, the objective of this work was to estimate the genetic divergences in green corn cultivars. The tests were conducted in the 2019/20 harvest on a property in the state of Pará. The design used in the given experiment was randomized blocks (DBC) and 3 replicates. The experimental plot consisted of 4 rows of 5.0 m spaced at 0.9 m between rows, the two central rows being considered the useful area. The genetic divergence was evaluated by multivariate procedures such as the generalized Mahalanobis distance and by Tocher optimization grouping methods and Singh criterion to quantify the relative contribution of the seven characteristics. The characteristics average mass of grains per ear and number of grains in the row of the ear were the ones that most contributed to genetic divergence. The dual hybrids BR205 and BRS3046 and the triple hybrid AG8088 are potentially promising for use in future breeding programs.The sweet corn harvest is carried out when the grains are still high in moisture (greater than 70%), which highlights the interference of the physiological stage of grain maturity in the yield. Therefore, the most propitious time for harvesting is the period in which the grains reach Débora Thaís da Silva Coutas et al.

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Section: Resultsmentioning

confidence: 99%

Analysis of genetic divergence through agronomic characters in green corn cultivars

Coutas¹,

Santos²,

Ribeiro³

et al. 2021

IJAERS

Self Cite

View full text Add to dashboard Cite

show abstract

Adaptability, stability and environmental stratification of genetically and nongenetically modified corn in the Cerrado

Eckardt

Cardoso

Silva

et al. 2022

Rev. bras. eng. agríc. ambient.

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Crop yield depends on interaction between genetic and environmental factors, making it essential to study adaptability, stability and environmental stratification in order to mitigate the effects of this interaction. Four experiments were conducted to assess competition between corn cultivars in the 2018/19 growing season, two in Paraíso do Tocantins and two in Palmas, with sowing performed on November 5, 2018 and January 15, 2019. Cultivar-environment interaction was analyzed in genetically modified (GM) and non-GM commercial corn cultivars in the Vale do Araguaia region of Tocantins state (TO), Brazil, A randomized block design was used for all the experiments, in 3 × 12 factorial scheme, with three doses of nitrogen fertilizer as topdressing (50, 100 and 150 kg of N ha-1) and 12 commercial cultivars (six non-GM, 1CHD, 2CV, 3CV, 4CV, 5CTH, 6CDH and six GM, 7GTH, 8GTH, 9GSH, 10GSH, 11GSH, 12GSH. For statistical analysis, the N dose in each experiment represented a different environment. The characteristic studied was grain yield, using the adaptability and stability methods as well as environmental stratification. Different responses were observed between the GM and non-GM cultivars. Most of the GM and non-GM cultivars were better adapted to favorable and unfavorable environments, respectively. All the environments exhibited similar behavior regardless of location, sowing time and the N dose used, demonstrating that fewer environments can be used in future breeding research.

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Divergência genética em milho para baixo e alto nitrogênio visando à produção de óleo e proteína

Cited by 2 publications

References 9 publications

Analysis of genetic divergence through agronomic characters in green corn cultivars

Analysis of genetic divergence through agronomic characters in green corn cultivars

Adaptability, stability and environmental stratification of genetically and nongenetically modified corn in the Cerrado

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