Evaluation the physiological quality of Brachiaria brizantha cv. BRS ‘Piatã’ seeds

Silva, Givanildo Zildo da; Martins, Cibele Chalita; Cruz, J.R.; Jeromini, Tatiane Sanches; Bruno, Riselane de Lucena Alcântara

doi:10.14393/bj-v33n3-36519

Cited by 12 publications

(27 citation statements)

References 20 publications

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“…However, the selection of superior lots and efficient variables for this purpose is complicated due to their numbers and the need to know all the information provided by the set of variables; thus, cluster analysis becomes more feasible. This fact was emphasized in soybean (Barbosa et al, 2013) and brachiaria (Silva et al, 2017).…”

Section: Resultsmentioning

confidence: 91%

“…It is worth noting that the tests of interest in the evaluation of lots in seed analysis laboratories, besides ranking the lots at vigor levels, must present results correlated with seedling emergence in the field (Marcos Filho, 2015). Therefore, seedling emergence in the field was used as reference for the selection of vigor tests (Melo et al, 2017;Silva et al, 2017). The performance of the lots was classified in descending order of vigor, from 1 to 10, grouping them into four vigor classes: high (lots 1 and 2), medium high (lots 3 to 7), medium low (lots 8 and 9), and low (lot 10).…”

Section: Lotsmentioning

confidence: 99%

“…The performance of the lots was classified in descending order of vigor, from 1 to 10, grouping them into four vigor classes: high (lots 1 and 2), medium high (lots 3 to 7), medium low (lots 8 and 9), and low (lot 10). This criterion was used because one of the purposes of the vigor tests is to evaluate the physiological quality of the seeds attempting to differentiate lots regarding the vigor level and to predict seedling emergence in the field (Marcos Filho, 2015;Oliveira et al, 2014;Melo et al, 2017;Silva et al, 2017).…”

Section: Lotsmentioning

confidence: 99%

“…However, this technique has potential for seed quality assessment, a fact proven for soybean (Barbosa et al, 2013) and Brachiaria brizantha cv. BRS Piatã (Silva et al, 2017). These authors state that factors such as number of variables, the need to improve the understanding of the factors influencing the physiological potential of seeds, and the accuracy of the discrimination between seed lots makes the use of multivariate techniques possible and effective in seed studies.…”

Section: Introductionmentioning

confidence: 99%

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Discrimination of forage pea seed lots by means of multivariate techniques

Machado¹,

Martins²,

Silva³

et al. 2019

Científica

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Multivariate techniques allow to understand the structural dependence contained in the variables, as well as to characterize groups of seed lots according to specific standards. Thus, this study analyzes the efficiency of multivariate exploratory techniques in discriminating forage pea seed lots as a function of the physiological potential of seeds. We evaluated ten seed lots of forage pea in a completely randomized design, considering the following variables: thousand seed weight, germination, first germination count, electrical conductivity, and accelerated aging. Moreover, seedling emergence, first count of seedlings in the field, and seedling emergence speed index in the field were added to randomized blocks with four replications per lot. Initially, the data obtained in each test were analyzed separately by means of analysis of variance, and the means of the treatments were compared by the Scott Knott test at 5% probability. Exploratory multivariate statistical techniques were applied by means of Cluster Analysis and Principal Components Analysis to discriminate seed lots with better physiological quality and to characterize the variables responsible for the differentiation between them. Multivariate analysis of principal components is efficient in discriminating vigor and seed germination tests in Pisum sativum subsp. Arvense, which help in identifying lots of superior performance in the field.

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Section: Resultsmentioning

confidence: 91%

Section: Lotsmentioning

confidence: 99%

Section: Lotsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Discrimination of forage pea seed lots by means of multivariate techniques

Machado¹,

Martins²,

Silva³

et al. 2019

Científica

Self Cite

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“…The water content of U. decumbens seeds from the 15 lots ranged from 8.5 to 10.5% (Table 2). The similarity in the water content values of seeds is essential for the quality analysis tests not to be affected by differences in metabolic activity, wetting rate and seed deterioration intensity (STEINER et al, 2011;MELO et al, 2016a;SILVA et al, 2017;MELO et al, 2018). According to the results of the tetrazolium test, seed viability ranged from 77 to 92%.…”

Section: Resultsmentioning

confidence: 99%

Production regions and physical quality of Urochloa decumbens CV. Basilisk seeds

Silva¹,

Martins²,

Cruz³

et al. 2019

Biosci. J.

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Brazil is the largest world producer, consumer and exporter of forage grass seeds. Urochloa decumbens Stapf. species is the second in importance in the Brazilian market of seeds of tropical forage grasses. Seeds are harvested by the soil sweeping method and, in addition to other impurities, harvested lots can present weed seeds, which makes seeds unfeasible for commercialization. The aim of the present study was to evaluate differences in the physical quality and viability of Urochloa decumbens cv. Basilisk seeds produced in different production fields. Fifteen U. decumbens seed lots from the State of São Paulo (1 lot in the municipality of Cássia dos Coqueiros and 3 lots in the municipality of Santo Antônio da Alegria), Minas Gerais (2 lots in the municipality of Tupaciguara, 2 lots in the municipality of Unaí, 2 lots in the municipality of Chapada Gaúcha and 3 lots in the municipality of Monte Santo de Minas), Goiás (1 lot in the municipality of Jataí) and Mato Grosso (1 lot in the municipality of Primavera do Leste) were evaluated by means of the following parameters: water content, viability by tetrazolium test, purity, determination of other seeds by number and weight of one thousand seeds. A completely randomized design was used, and when significant, the means of treatments were compared by the Scott Knott test at 5% probability. The fields of the different regions produce U. decumbens seeds with high variability in physical quality. U. decumbens seeds with the highest physical quality and viability were produced in Cassia dos Coqueiros-SP.

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The effect of cutting regime and genotype on growth, seed yield, seed quality and herbage yield of seven Urochloa (syn. Brachiaria) grass genotypes in the Adamawa region of Cameroon

Ojong,

Takor,

Egbe

et al. 2024

Grassland Science

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The performance of seven Urochloa grass genotypes (three worldwide cultivars cv. Basilisk, cv. Piata, cv. Xaraes and four landrace cv. Adamaoua1, cv. Adamaoua2, cv. North1 and cv. North2) subjected to two cutting regimes (mid‐June cut and mid‐July cut) was evaluated for regrowth characteristics, seed yields, seed quality and herbage production in 2020 and 2021 cropping seasons at Wakwa, Ngaoundere, Cameroon. This divergence in harvesting practices raises concerns regarding the effectiveness and efficiency of forage utilization, as well as the potential impact on livestock productivity and sustainable farming systems. A split plot design with five replications and a 1‐year‐old sward was used for the study. In both years, genotypes were significantly different for plant height and tiller numbers at 12 weeks after cutting (P ≤ 0.007). In 2020, the dry matter yield (DMY) ranged between 8.78 t/ha (cv. Piata) and 12.75 t/ha (cv. Xaraes) for June cut regrowth and between 7.69 t/ha (cv. Piata) and 10.26 t/ha (cv. Xaraes) for July cut regrowth. In 2021, DMY ranged between 6.06 t/ha (Adamaoua2) and 13.95 t/ha (cv. Xaraes) for the June cut and between 6.55 t/ha (cv. Adamaoua2) and 10.47 t/ha (cv. Basilisk) for the July cut. For flowering behavior and seed yields, Basilisk flowered earliest while cv. Xaraes flowered latest. In 2020, seed yields were 74.80 kg/ha and 107.72 kg/ha for June cut and July cut regrowth, respectively, whereas in 2021, seed yields were 331 kg/ha and 431 kg/ha for June cut and July cut regrowth, respectively. cv. Adamaoua1 produced the highest seed yield in both years. The cutting regimes evaluated in this study were indifferent for DMY and seed yield.

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Evaluation the physiological quality of Brachiaria brizantha cv. BRS ‘Piatã’ seeds

Cited by 12 publications

References 20 publications

Discrimination of forage pea seed lots by means of multivariate techniques

Discrimination of forage pea seed lots by means of multivariate techniques

Production regions and physical quality of Urochloa decumbens CV. Basilisk seeds

The effect of cutting regime and genotype on growth, seed yield, seed quality and herbage yield of seven Urochloa (syn. Brachiaria) grass genotypes in the Adamawa region of Cameroon

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