Correlações entre caracteres quantitativos em milho pipoca

Carpentieri-Pípolo, Valéria; Takahashi, Hideaki; Endo, Romeu Munashi; Petek, Marcos Rafael; Seifert, Adilson Luiz

doi:10.1590/s0102-05362002000400008

Cited by 23 publications

(15 citation statements)

References 5 publications

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“…There was a lack of significant correlation (P < 0.05) between GY and EV ( Table 3), confirming that the selection undertaken for EV did not affect the GY trait, corroborating the results of Carpentieri Pípolo et al (2002), and Daros et al (2004a). This suggests that it is possible to achieve gains for the two traits simultaneously in the populations under study since there is no strong linear association between EV and GY.…”

Section: Resultssupporting

confidence: 75%

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Estimate of genetic gain in popcorn after cycles of phenotypic recurrent selection

et al. 2016

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ABSTRACT. Popcorn is widely consumed in Brazil, yet there are few breeding programs for this crop. Recurrent selection (RS) is a viable breeding alternative for popcorn; however, the gains achieved must be frequently checked. The aim of this study was to assess the effect of selection for grain type (round and pointed) after four cycles of phenotypic RS on the main agronomic traits of popcorn, to estimate the genetic gain achieved for the trait of expansion volume (EV), and to obtain estimates of phenotypic correlations for the main traits of the crop in the UFLA E and UFLA R populations. The zero, one, two, and three cycles of the UFLA E and UFLA R populations, the fourth cycle, and the controls IAC-112 and IAC-125 were used. The experiments were conducted at the experimental farm of Universidade Federal de Lavras (UFLA; Environment 1) and at the experimental area of the Genetics and Plant Breeding Sector of the Department of Biology at UFLA (Environment 2) in the 2010/11 crop season. Nine agronomic traits were evaluated, including EV and grain yield (GY). The UFLA R and UFLA E populations showed similar behavior for all evaluated traits. The type of grain did not affect the genetic gain for EV, which was 5 and 3.7% in each cycle carried out in the UFLA E and UFLA R population, respectively. Phenotypic selection carried out during recombination for EV is an effective method for increasing expression of the trait. EV and GY did not show a linear association.

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Section: Resultssupporting

confidence: 75%

“…There are reports that these traits exhibit a negative association, and there may be a greater or lesser degree of association depending on the genetic base of the population (Carpentieri-Pípolo et al, 2002;Daros et al, 2004a).…”

Section: Introductionmentioning

confidence: 99%

Estimate of genetic gain in popcorn after cycles of phenotypic recurrent selection

et al. 2016

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“…higher for both traits, this direct selection strategy -also called truncated -is inadequate for satisfactory simultaneous genetic gains for two or more traits, as in the case of PE and GY, which are occasionally negatively correlated as well (Pacheco et al 1998, Carpentieri-Pípolo et al 2002, Daros et al 2004b, Faria et al 2008.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, researchers are dedicated to developing superior and adapted genotypes, especially with regard to popping expansion (PE) and grain yield (GY) (Amaral Júnior et al 2013, Ribeiro et al 2016. In some situations, the obstacle of negative correlation between PE and GY has to be overcome, so that the developed product satisfies both producers and consumers (Zinsly and Machado 1987, Carpentieri-Pípolo et al 2002, Broccoli and Burak 2004, Faria et al 2008, Freitas et al 2013.…”

Section: Introductionmentioning

confidence: 99%

Recurrent selection of popcorn composites UEM-CO1 AND UEM-CO2 based on selection indices

Vieira

Rocha

Scapim

et al. 2017

Crop Breed. Appl. Biotechnol.

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“…A seleção de determinado ambiente pode ter sua importância aumentada conforme se obtém J. Bioen. Food Sci., v.4, n.2, pp.107-112, 2017 conhecimento a respeito das correlações com o as distâncias de Mahalanobilis obtidas com um maior número de ambientes analisados conjuntamente (CARPENTIERI-PÍPOLO et al, 2012). Tabela 1.…”

Section: Resultsunclassified

Correlação entre diversidades genéticas em genótipos de milho, obtidas em diferentes combinações de ambientes

Santos

Afférri

Pelúzio

et al. 2017

J. Bioen. Food Sci.

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Revisão às cegas por pares ABSTRACTThis study aimed to study the correlation between different environments of genetic diversity in corn genotypes in the city of Palmas, Tocantins, in late planting. The tests were divided into two planting dates (01.21.2014 and 02.19.2014). In each time the tests were performed under conditions of high nitrogen (N), mean N and low N in topdressing, yielding 6 environments. The experimental design used in each test was a randomized complete block design with three replications and 12 treatments (genotypes) of corn coming from the. Sixteen agronomic traits were used. Was conducted study of genetic diversity for each test, all tests together and combinations thereof. Significant effects were detected for the correlations in 30% of the pairs. In AMB 1, there was a positive and significant correlation for the great majority of combinations, which showed a possibility in reducing the number of experiments to study diversity. And the nonsignificance of the correlation between periods 1 (AMB 2) and season 2 (AMB 3), exemplifies the need to conduct trials at different times.

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Correlações entre caracteres quantitativos em milho pipoca

Cited by 23 publications

References 5 publications

Estimate of genetic gain in popcorn after cycles of phenotypic recurrent selection

Estimate of genetic gain in popcorn after cycles of phenotypic recurrent selection

Recurrent selection of popcorn composites UEM-CO1 AND UEM-CO2 based on selection indices

Correlação entre diversidades genéticas em genótipos de milho, obtidas em diferentes combinações de ambientes

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