Caracterização da Peneira Média em Clones de Coffea canephora

Introdução: O estado de Rondônia se destaca como tradicional produtor de café, sendo o segundo maior produtor brasileiro de C. canephora. No melhoramento genético de C. canephora, a seleção de plantas de elevada peneira média está associada à bebida de qualidade superior. Objetivos: O objetivo desse estudo foi avaliar a variabilidade genética de clones de C. canephora para o tamanho dos grãos, mensurado a partir da avaliação da peneira média (PM). Materiais e Métodos: Para isso, foi conduzido ao longo de dois anos agrícolas experimento no campo experimental da Embrapa no município de Ouro Preto do Oeste-RO, para a avaliação da peneira média de 130 genótipos (clones) com características das variedades botânicas Conilon, Robusta e híbridos intervarietais. O delineamento experimental utilizado foi de blocos ao acaso, com quatro repetições de quatro plantas por parcela. Resultados: Não houve resultados significativos para a interação clones X anos, indicando uma maior consistência no comportamento das plantas ao longo do tempo. Porém foram observadas diferenças significativas para o tamanho dos grãos entre os genótipos avaliados, possibilitando selecionar genótipos superiores. Conclusão: Os genótipos agruparam-se em cinco classes de acordo com o teste de média, subsidiando a caracterização de um gradiente de variabilidade da característica avaliada ABSTRACTIntroduction: Coffea canephora accounts for approximately 35% of the world's coffee production. The state of Rondônia stands out as a traditional coffee producer, being the second largest Brazilian producer of C. canephora. In the classical genetic improvement of C. anephora, the selection of plants of high average sieve is associated with a drink of superior quality. Objectives: The objective of this udy was to evaluate the genetic variability of Coffea canephora clones for the agronomic medium sieve (PM). Materials and Methods: The experiment was conducted in the experimental field of Embrapa, municipality of OuroPreto do Oeste-RO, located at coordinates 10º44'53 "S and 62º12'57". One hundred thirty genotypes (clones) of botanical characteristics Conilon, Robusta and intervarietal hybrids were evaluated in the agricultural years 2013-2014 and 2014-2015. The experimental design was a randomized block design with four blocks and four plants per plot, spacing 3.5 x 1.5 meters between plants. Results: Significant difference was found for the grain size. According to the F test, at 5% probability, the genotypes were grouped into five classes according to the mean test. Conclusion: The results obtained subsidized the characterization of a variability gradient of the evaluated trait.

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The Effect of Stem Segment Cuttings of Robusta Coffee (Coffea canephora) on Growth of Root and Leaf Sprout

Asian Journal of Agriculture and Rural Development ◽

10.18488/journal.ajard.2021.111.28.34 ◽

2021 ◽

Vol 11 (1) ◽

pp. 28-34

Author(s):

Bistok Hasiholan Simanjuntak ◽

Devi Kusuma Wardani

Keyword(s):

Leaf Growth ◽

Block Design ◽

Experimental Treatment ◽

Coffea Canephora ◽

Stem Segment ◽

Significance Level ◽

Robusta Coffee ◽

Randomized Block Design ◽

Honestly Significant Difference ◽

Significant Difference

Robusta coffee plant propagation is recommended to be performed by vegetative methods, one of which is cuttings. Among plant organs that can be used for cuttings is the stem. The research objective was to determine which stem segment from cuttings was able to provide the best root and leaf growth. The layout study used a completely randomized block design (RBD) with an experimental treatment consisting of five stem segments, namely (1) the first stem segment from the upper shoot (A); (2) the second stem segment from the upper shoot (B); (3) the third stem segment from the upper shoot (C); (4) the fourth stem segment from the upper shoot (D); and (5) the fifth stem segment from the upper shoot (E); each treatment had five replications. Data analysis was performed statistically with analysis of variance (ANOVA) and Tukey's HSD (honestly significant difference) test with a significance level of P < 0.05. Robusta coffee cuttings stems from the second stem segment from the upper shoot were able to provide the optimal root growth (root length) and shoot growth (leaf sprout height and leaf sprout growth rate). Leaf sprout number derived from the cuttings was not affected by the stem segment.

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Selection of Coffea canephora parents from the botanical varieties Conilon and Robusta for the production of intervarietal hybrids

Ciência Rural ◽

10.1590/0103-8478cr20170444 ◽

2018 ◽

Vol 48 (4) ◽

Author(s):

Leilane Nicolino Lamarão de Oliveira ◽

Rodrigo Barros Rocha ◽

Fábio Medeiros Ferreira ◽

Victor Mouzinho Spinelli ◽

André Rostand Ramalho ◽

...

Keyword(s):

Block Design ◽

Original Data ◽

Coffea Canephora ◽

Reference Points ◽

Hybrid Vigor ◽

Botanical Variety ◽

Randomized Block Design ◽

Main Component ◽

Botanical Varieties ◽

Selection Of

ABSTRACT: The objective of this research was to quantify the genetic divergence of potential Coffea canephora parents, with the goal of developing progenies that associate the best traits of the Conilon and Robusta botanical varieties for hybrid vigor expression. Thus, 10 morphological and productive characteristics of 130 clones of Conilon and Robusta botanical varieties and their intervarietal hybrids were evaluated over 2 years. The experiment was conducted in a randomized block design with four replicates of four plants per plot. For selection of parents, the main component analysis was used to associate values with reference points obtained from the average of each botanical variety. The first two principal components allowed for the separation of the botanical varieties representing the variability contained in the original data with 76% for the first year and 69% for the second year. Although, the genotype × years interaction had significant effects, there were minor differences in the grouping from one year to the next, which is associated with the higher repeatability estimates observed in this study. It was observed that crosses with the 16-1-81I, 9-1-82L, and 13-1-61I parents of the botanical variety Robusta and the 167I, 890E, and 130I parents of the Conilon botanical variety presented greater potential for obtaining selection gains.

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Study of repeatability and phenotypical stabilization in kale using frequentist, Bayesian and bootstrap resampling approaches

Acta Scientiarum Agronomy ◽

10.4025/actasciagron.v41i1.42606 ◽

2019 ◽

Vol 41 (1) ◽

pp. 42606

Author(s):

Orlando Gonçalves Brito ◽

Valter Carvalho de Andrade Júnior ◽

Alcinei Mistico de Azevedo ◽

Luan Mateus Silva Donato ◽

Lidiane Rodrigues Silva ◽

...

Keyword(s):

Genetic Improvement ◽

Genetic Parameters ◽

Block Design ◽

Bootstrap Resampling ◽

Average Mass ◽

Estimated Parameters ◽

Randomized Block Design ◽

Number Of Leaves ◽

Bayesian Methodologies ◽

Selection Of

The aim of this study was to obtain information for the genetic improvement of kale through repeatability and phenotypic stabilization studies and to compare methodologies that represent the reliability of the estimated parameters. Thirty-three half-sib progenies were evaluated in a randomized block design with three replicates and six plants per plot. Eight harvests were evaluated in terms of the yield of fresh leaves, number of shoots, number of leaves and average mass of leaves. Then, a phenotypic repeatability and stabilization study was performed, estimating the genetic parameters σ2a, σ²g, σ²e, and the coefficient of environmental variation and repeatability using the frequentist and Bayesian methodologies. To evaluate the reliability of these estimates, intervals were obtained using the frequentist, Bayesian and bootstrap methods. It was verified that the reliable selection of progenies of half-sib of kale can be achieved in four harvests that were realized between 95 and 170 days after planting. It was observed that the frequentist and Bayesian methodologies are better suited to obtain reliable estimates of the genetic parameters evaluated, as the last one provided smaller amplitudes for the obtained intervals. The bootstrap methodologies are not recommended for phenotypic repeatability and stabilization studies in kale.

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Assessing the genotypic performance of carioca beans through mixed models

Ciência Rural ◽

10.1590/0103-8478cr20170761 ◽

2018 ◽

Vol 48 (7) ◽

Author(s):

Yure Pequeno de Souza ◽

Paulo Ricardo dos Santos ◽

Maxwel Rodrigues Nascimento ◽

Kleyton Danilo da Silva Costa ◽

Thalyson Vasconcelos Lima ◽

...

Keyword(s):

Mixed Models ◽

Selection Criteria ◽

Genetic Parameters ◽

Block Design ◽

Breeding Programs ◽

Randomized Block Design ◽

Bean Yield ◽

The Mean ◽

Moderate Magnitude ◽

Selection Of

ABSTRACT: Using genotypes adapted to different regions is one of the main ways to increase Brazilian bean yield. The aim of the present study was to assess the genotypic performance of Carioca beans through mixed models. Fourteen Carioca bean genotypes were assessed in four locations in Pernambuco State (Arcoverde, Caruaru, Belém de São Francisco and São João counties) in 2015. The experiments followed a completely randomized block design, with three repetitions. Genetic parameters were estimated according to the REML/BLUP methodology, whereas genotype selection was based on the harmonic mean of relative performance of genetic values method (MHPRVG). The mean genotype heritability had moderate magnitude, high selective accuracy, besides allowing selection of agronomically superior individuals. Genotypes ‘BRS Notável’, CNFC 15480 and ‘IPR 139’ showed good adaptability and grain yield stability. There was agreement among the statistics μ ̂ + g ̂…, stability (MHVG), adaptability (PRVG), and stability and adaptability of genetic values (MHPRVG) in the discrimination of the most productive genotypes, which presented high adaptability and stability. This outcome indicated that these genotypes can be part of the selection criteria regularly used in bean breeding programs.

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Application methods and dosages of thiamethoxam in thrips control on tomato plants

Horticultura Brasileira ◽

10.1590/s0102-05362003000300002 ◽

2003 ◽

Vol 21 (3) ◽

pp. 430-432 ◽

Cited By ~ 3

Author(s):

Carlos Gilberto Raetano ◽

Marco Roberto Kobayashi ◽

Wagner Roberto Kuwahara ◽

Rodrigo R. Vinchi

Keyword(s):

Block Design ◽

Cumulative Number ◽

Control Efficacy ◽

Tomato Plants ◽

Tomato Spotted Wilt ◽

Randomized Block Design ◽

Significant Difference ◽

The Mean ◽

Application Methods ◽

Thrips Population

Thrips is one of the most important vector species of the tomato spotted wilt tospovirus (TSWV) in Brazil. Two different pesticide application methods, drench x spray, using thiamethoxam were compared with commonly used insecticides for thrips control in tomato plants, Debora Plus. The experimental design consisted of a complete randomized block design with seven treatments and four replicates. Dosages of 150 and 200 g of a.i. per ha were used in just one drench application and 50 g of a.i. ha-1 sprayed, at weekly intervals, 48 days after sowing. The control efficacy of thiamethoxam was compared to diafenthiuron (400 g of a.i. ha-1), profenofos + cypermethrin (320+32 g of a.i. ha-1, respectively) and methamidophos (60 g of a.i. per hectolitre of water) in spray application. Cumulative number of plants with tospoviruses and the F. schultzei population from ten flowers per plot were registered. The mean cumulative number of plants with tospoviruses among treatments was not significantly different. No significant difference between thiamethoxam application methods and dosages on F. schultzei control, 24 days after application, were observed for thrips population. One drench application of higher dosages of thiamethoxam proved to be more environmentally advantageous than the pesticide applied at dosages of 50 g of a.i. ha-1 at weekly intervals. The vector control efficacy of thiamethoxam varied from 93 to 95%, independently of the application method and dosages. Diafenthiuron and profenofos + cypermethrin showed less efficacy (78 and 88%, respectively) but greater than those with methamidophos (71%). The products and dosages tested did not cause phytotoxicity in tomato leaves.

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Adaptability and stability of early carioca beans by mixed models

Bioscience Journal ◽

10.14393/bj-v36n0a2020-48288 ◽

2020 ◽

Vol 36 ◽

Author(s):

Thalyson Vasconcelos Lima ◽

Paulo Ricardo Dos Santos ◽

Tâmara Rebecca Albuquerque De Oliveira ◽

Maxwel Rodrigues Nascimento ◽

Kleyton Danilo da Silva Costa ◽

...

Keyword(s):

Genetic Parameters ◽

Mixed Model ◽

Block Design ◽

Phenotypic Expression ◽

Environment Interaction ◽

Randomized Block Design ◽

Specific Performance ◽

Superior Genotypes ◽

The Mean ◽

Selection Of

The genotype x environment interaction represents one of the major selection challenges due to the difficulty in identifying effectively superior genotypes. The present study aimed at estimating genetic parameters and selecting genotypes of early Carioca beans by analyzing simultaneous attributes, including yield, adaptability, and stability. In the agricultural year of 2015 and 2016, three trials were conducted, using a randomized block design, with three repetitions each, in the Agreste and Sertao regions of Pernambuco State. The genetic parameters were estimated using the mixed model procedure, and the selection was based on the harmonic mean of the relative performance of genetic values (MHPRVG, abbreviation in Portuguese) method. The environments influenced the phenotypic expression of the bean genotypes during both years, setting a specific adaptation. The mean heritability of the genotypes regarding yield exhibited low magnitude values in the trials of 2015 (5.78%) and 2016 (13.77%), indicating costly conditions for the selection of the improved genotypes. Genotype CNFC 15856 was selected, considering the genetic gain predicted for yield, by the average and specific performance in the three environments, and by the simultaneous attributes of yield, adaptability, and stability. The MHPRVG method enables the optimized selection of genotypes considering yield, stability, and adaptability; therefore, it should be included in the recommended selective criteria for agronomically superior genotypes in commercial plantations.

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PENGARUH PYRACLOSTROBIN PADA PEMBENTUKAN BUAH KOPI ROBUSTA (Coffea canephora)

BUANA SAINS ◽

10.33366/bs.v18i1.935 ◽

2018 ◽

Vol 18 (1) ◽

pp. 29

Author(s):

Wiharyanti Nur Lailiya ◽

Karuniawan Puji Wicaksono ◽

Eko Widaryanto

Keyword(s):

Block Design ◽

Economic Value ◽

Coffea Canephora ◽

Alcoholic Beverages ◽

Coffee Plantation ◽

Coffee Production ◽

Robusta Coffee ◽

Fruit Drop ◽

Randomized Block Design ◽

Plantation Crops

Robusta coffee (Coffea canephora) is one of the commodities that have high economic value among other plantation crops. Coffee is also one of the three non-alcoholic beverages (coffee, tea, chocolate) are widespread. Indonesia and among the countries located in the international coffee world, because Indonesia is the third largest coffee exporter after Brazil and Vietnam. Coffee production in Indonesia reached an average of 11.250 tonnes per year. The purpose of this study is studying the ability of pyraclostrobin on coffee fertilization, thereby reducing the occurrence of fruit drop and determining the appropriate concentrations for spraying treatment pyraclostrobin on fertilization and reduce fruit drop robusta coffee. This study was conducted in January-September 2016 in the coffee plantation Tlogosari, Tirtoyudo subdistrict, Malang regency which is located at the altitude of 560 m above sea level. The method that used in this study is a randomized block design, consisting of 6 treatments and 4 replications. While the treatment is P0 (without spraying), P1 (Spraying once a week with a concentration of 150 ppm), P2 (Spraying once a week with a concentration of 300 ppm), P3 (Spraying once a week with a concentration of 450 ppm), P4 (Spraying once a week with a concentration of 600 ppm), P5 (Spraying once a week with a concentration of 750 ppm). Giving pyraclostrobin with a concentration of 600 ppm may increase the amount of fruit compared to the treatment without giving pyraclostrobin.

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Estimation of genetic parameters and selection of Brachiaria humidicola progenies using a selection index

Cropp Breeding and Applied Biotechnology ◽

10.1590/s1984-70332012000400002 ◽

2012 ◽

Vol 12 (4) ◽

pp. 237-244 ◽

Cited By ~ 23

Author(s):

Ulisses José de Figueiredo ◽

José Airton Rodrigues Nunes ◽

Cacilda Borges do Valle

Keyword(s):

Genetic Parameters ◽

Nutritive Value ◽

Agronomic Traits ◽

Block Design ◽

Selection Index ◽

Brachiaria Humidicola ◽

Randomized Block Design ◽

The Mean ◽

Selection For ◽

Selection Of

The objectives of this study were to estimate genetic parameters for agronomic and nutritive value traits for leaves and stems of Brachiaria humidicola progenies and to compare the selection using an additive index considering the agronomic traits alone or combined with the main nutritive value traits. Fifty progenies of the cross cv. BRS Tupi x H31 were evaluated. The experiment was arranged in a randomized block design with eight replications. The forage was cut seven times, at intervals of 30 - 35 days in the rainy season and two intervals of 60 days in the dry season. Trait variability among the progenies was confirmed. The mean progeny heritability ranged from 49.14% to 75.56% for the agronomic and from 19.59% to 71.11% for nutritive value traits. Nine of the ten best lines coincided in the selection for agronomic traits alone and in the selection including the main traits of nutritive value.

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KUALITAS KARKAS TERNAK BABI GROWER YANG MENGGUNAKAN TEPUNG KULIT KOPI SEBAGAI PENGGANTI SEBAGIAN DEDAK PADA RANSUM

ZOOTEC ◽

10.35792/zot.37.2.2017.16248 ◽

2017 ◽

Vol 37 (2) ◽

pp. 386 ◽

Cited By ~ 1

Author(s):

Magdalena S. Gerungan ◽

Mien Th.R. Lapian ◽

J.A.D Kalele ◽

Zulkifly Poli

Keyword(s):

Statistical Analysis ◽

Rice Bran ◽

Difference Method ◽

Block Design ◽

Carcass Quality ◽

Slaughter Weight ◽

Randomized Block Design ◽

Significant Difference ◽

The Mean

EFFECT OF COFFEE SKIN FLOUR AS A SUBSTITUTE FOR RICE BRAN IN THE RATION ON CARCASS QUALITY OF GROWER PIGS. Research entitled effect of coffee skin flour in the ration of grower phase pig on slaughter weight, carcass length and carcass percentage have been done. Research conducted for 52 days using 16 Landrace pigs. Methods of randomized block design were used. Four replication as group of weight was used and treatments were four level of coffee skin flour of 0%, 25%, 50%, and 75%. The research variables are slaughter weight, carcass length and carcass percentage. Results of statistical analysis showed that there was no significant difference between treatments and the percentage of carcasses and slaughter weight (P> 0.05). The mean of slaughter weight is 76.68 kg and the average of carcass percentage is 63.80%. Analysis of variance showed that there is highly significant difference (P<0.01) between treatments and the length of carcass. Further test by the least significance difference method indicates that there was no significant difference on carcass length between R0 and R1, R2 and R3. There was also no significant difference on carcass length between R1 and R2, R1 and R3, and R2 and R3. Based on these results, it can be concluded that the use of coffee skin flour as a substitution as much as 25% of in the ration can increase the length of the carcass.Keywords: carcass length and carcass percentage, flour coffee skin, slaughter weight, pork.

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Heterobeltiosis in French Marigold (Tagetes patula L.)

Journal of Agricultural Science ◽

10.5539/jas.v8n8p182 ◽

2016 ◽

Vol 8 (8) ◽

pp. 182

Author(s):

Kanwar Priyanaka ◽

Y. C. Gupta ◽

S. R. Dhiman ◽

R. K. Dogra ◽

Sharma Madhu ◽

...

Keyword(s):

Rainy Season ◽

Quantitative Traits ◽

Block Design ◽

Tagetes Patula ◽

Male Sterile ◽

Randomized Block Design ◽

Parental Material ◽

The Mean ◽

Parental Lines ◽

Better Than

The studies on heterosis were carried with four male sterile lines namely; ms7, ms8, ms9, ms10 and 18 diverse pollinators as tester by using line × tester crossing programme. The 72 F1 hybrids were produced and evaluated along with 22 parental lines during summer 2009 and rainy season 2009 in Randomized Block Design. Observations were recorded on nine quantitative traits during both the seasons. Highly significant variances for all the traits indicated the sufficient variability in the parental material for all the characters under study. The performance of F1 hybrids was much better than the mean performance of parents during both the crop seasons. Appreciable heterosis was observed in all the characters, except flower weight in summer and plant height in rainy season.

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