Dissimilaridade genética de girassol por meio de caracteres quantitativos

Rigon, João Paulo Gonsiorkiewicz; Capuani, Sílvia; Cherubin, Maurício Roberto; Rosa, Genésio Mário da; Wastowski, Arci Dirceu

doi:10.1590/s0103-84782012001100008

Cited by 6 publications

(7 citation statements)

References 12 publications

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“…These data corroborate the main result for correlation presented in Table 5 (AY and NAC with r = 1). In the study of Rigon et al (2012), NAC contributed with 50% to divergence among cultivars, which is close to the value found in the present experiment. Additionally, the other agronomic traits of interest for yield had a low-magnitude S.j.…”

Section: Discussionsupporting

confidence: 90%

Agronomic characterization of sunflower cultivars for animal feeding in tropical conditions

et al. 2021

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This study was developed to examine morpho-agronomic traits of 18 sunflower cultivars and identify superior cultivars in terms of grain yield, forage quality, or both, for animal feeding. Twenty-two morpho-agronomic traits related to plant development and architecture; earliness of maturity; grain yield (achenes); dry matter yield; and dry matter content were evaluated. Cultivars Hélio 253, Hélio 358, Embrapa 122, BRS 321, and Hélio 360 showed inflorescence at the final stage. Aguará 4 showed the lowest flowering rate, characterizing it as late-maturing. For grain yield, cultivars Charrua, Olisun 3, BRS 321, Paraíso 103CL, Paraíso 65, Aguará 6, and CF 101 are recommended, as they showed the highest achene yields (average: 1,541.67 to 2,148.81 kg.ha−1, respectively). Cultivars Charrua, Hélio 251, Olisun 3, Hélio 360, Paraíso 55, and Paraíso 103CL exhibited higher dry matter yields (9,550.93 to 11,789.91 kg ha−1) and were thus indicated for forage production. Cultivars Charrua, Olisun 3, BRS 321, Paraíso 103CL, Paraíso 65, Aguará 6, and CF 101 are recommended for grain yield, for the diet of monogastric animals; Charrua, Hélio 251, Olisun 3, Hélio 360, Paraíso 55, and Paraíso 103CL for forage yield, for ruminant feeding; and Charrua, Olisun 3, and Paraíso 103CL for both purposes.

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Section: Discussionsupporting

confidence: 90%

Agronomic characterization of sunflower cultivars for animal feeding in tropical conditions

et al. 2021

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“…The dendrogram using the hierarchical method for allocation of hybrids by average linkage among groups (UPGMA) was the most precise for genotype clustering, elapsing the cut at the proportion of 40% of the total genetic distinction by sets agglomeration, as was found by Osorno & Carena (2008) in a similar study of divergence amongst maize genotypes Rotili et al (2012), Rigon et al (2012), with sunflower. Equivalence of the methods was found by the similarity between constitution of Tocher grouping to and the dendrogram (Figure 3).…”

Section: Resultsmentioning

confidence: 87%

Genetic divergence among maize hybrids by morphological descriptors

2015

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Two experiments with 25 maize commercial hybrids were carried out in a direct sowing system in Southern Brazil in the harvests of 2009/2010 and 2010/2011. Quantitative descriptors were used with the objective of determining the genetic divergence and the relative contributions of traits among hybrids for extraction of inbred lines. This study was carried out in Oxisol soil using a randomized block design with four replicates. Data were subjected to combined analysis of variance, and based on the multivariate analyses, Tocher and average linkage (UPGMA) cluster analyses, based on generalized distance of Mahalanobis, to quantify divergence in addition to Singh criterion to validate trait with the most contribution. The multivariate methods were consistent with each other, and the weight of 100 grains was the trait that contributed most to the divergence and had similar behavior in grain yield between hybrids in both years. Furthermore, this descriptor representing significant genetic variability for crossings and lines extraction to hybridization between BM 3061, ATL 200 and P 30B39 Y.

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“…Contudo, os outros grupos formados apresentaram oposições entre si, indicando comportamento distinto entre os demais ecótipos nos períodos avaliados. Isso indica que esses caracteres são mais complexos em função da resposta distinta dos ecótipos, diante das variações ambientais (RIGON et al, 2012). Estes resultados sugerem a possibilidade das linhagens extraídas destes ecótipos apresentarem divergência genética e, concomitantemente, heterose em combinações híbridas.…”

Section: Resultsunclassified