scholarly journals Estimativas de parâmetros genéticos, correlações e índices de seleção para seis caracteres agronômicos em linhagens F8 de soja

2016 ◽  
Vol 7 (3) ◽  
pp. 302 ◽  
Author(s):  
Wallace De Sousa Leite ◽  
Bruno Ettore Pavan ◽  
Carlos Humberto Aires Matos Filho ◽  
Francisco De Alcantara Neto ◽  
Cleidismar Barbosa de Oliveira ◽  
...  
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Genetic Correlations ◽  
Phenotypic Selection ◽  
Breeding Programs ◽  
Randomized Block Design ◽  
High Heritability ◽  
High Degree ◽  
Prospect Of Success ◽  
Selection Of

This study aimed to estimate genetic and phenotypic parameters and provide knowledge for breeding programs aiming at the selection of the main characters of assessment in soybeans. The experiment was installed in Sabia farm, located at ‘Serra das Laranjeiras” , in the municipality of Currais, Piaui, Brazil, during the 2011/2012 crop year using a randomized block design with 27 genotypes and three repetitions. The evaluated variables were: height at flowering (APF), height at maturity (APM), pod insertion height (AIV), grain yield (PG), number of nodes (NN) and number of pods (NV). The obtained heritability coefficients were from medium to high, for all evaluated characters, ranging from 0.53 to 0.94, for grain yield and plant height at flowering, respectively. These high heritability were confirmed by the high degree of genetic variation and the CVg/CVe ratio, indicating a high prospect of success for the phenotypic selection. The higher positive genetic correlations and the significant (P <0.01) were observed between grain yield and the variables number of nodes (0.807**) and number of pods (0.781**), indicating that the selection of plants with higher number of nodes and pods could result in more productive plants. The Williams-based index presented the highest percentage of gain with the selection offor the grain yield (21.84%) variable.

scholarly journals Performance of F2 Rice (Oryza sativa L.) Segregants Derived from a Cross the BPT-5204 / IR-64Drt1

2020 ◽  
pp. 31-47
Author(s):  
Anjani Kumar ◽  
D. N. Singh ◽  
Krishna Prasad ◽  
Avinash Pandey
Keyword(s):  
Grain Yield ◽  
Field Condition ◽  
Significant Variation ◽  
Oryza Sativa L ◽  
Block Design ◽  
Drought Condition ◽  
Normal Field ◽  
Randomized Block Design ◽  
Rice Genotypes ◽  
Selection Of

The present investigation was carried out with F2 plants from a cross between two parents i.e., BPT-5204 and IR-64Drt1. The selection of parents for crosses was made based on genotypes that were tolerant and susceptible to drought condition. BPT-5204 was drought susceptible and IR-64Drt1 was also tolerant to drought. In this experiment adequate amount of variability was detected for grain yield per plant and its components among 324 segregants evaluated under augmented randomized block design II in normal field condition. The analysis of variance for grain yield and its attributing characters among blocks, treatments, entries, checks and checks vs entries revealed presence of significant variation in the segregants studied. However, with respect to checks, non-significant differences were recorded for only L/B ratio. The results indicated that among 324 rice genotypes including checks, only 9 rice genotypes expressed higher yield compared to seven checks varieties under normal field condition. The segregants S-51, S-122, S-135, S-195, S-199, S-210, S-219, S-222, S-251 were top ranking genotypes with respect to all checks.

scholarly journals Tolerance to preharvest sprouting and yield of wheat genotypes from different breeding programs

2015 ◽  
Vol 50 (8) ◽  
pp. 698-706
Author(s):  
Rafael Nörnberg ◽  
José Antonio Gonzalez da Silva ◽  
Henrique de Souza Luche ◽  
Elisane Weber Tessmann ◽  
Sydney Antonio Frehner Kavalco ◽  
...  
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Preharvest Sprouting ◽  
Rio Grande Do Sul ◽  
Falling Number ◽  
Breeding Programs ◽  
Wheat Genotypes ◽  
Randomized Complete Block Design ◽  
Superior Genotypes ◽  
Selection Of

Abstract:The objective of this work was to characterize the performance of elite wheat genotypes from different Brazilian breeding programs for traits associated with grain yield and preharvest sprouting. The study was conducted in 2010 and 2011 in the municipality of Capão do Leão, in the state of Rio Grande do Sul, Brazil, in a randomized complete block design with three replicates. Thirty-three wheat genotypes were evaluated for traits related to preharvest sprouting and grain yield. The estimate of genetic distance was used to predict potential combinations for selection of plants with high grain yield and tolerance to preharvest sprouting. The combined analysis of sprouted grains and falling number shows that the TBIO Alvorada, TBIO Mestre, Frontana, Fundacep Raízes, Fundacep Cristalino, and BRS Guamirim genotypes are tolerant to preharvest sprouting. Combinations of TBIO Alvorada and TBIO Mestre with Fundacep Cristalino show high potential for recovering superior genotypes for high grain yield and tolerance to preharvest sprouting.

scholarly journals Keragaman genetik dan heritabilitas karakter komponen hasil dan hasil ciplukan (Physalis sp.)

Jurnal Agro ◽  
10.15575/1864 ◽  
2018 ◽  
Vol 5 (1) ◽  
pp. 30-38 ◽  
Author(s):  
Effendy Effendy ◽  
Respatijarti Respatijarti ◽  
Budi Waluyo
Keyword(s):  
Genetic Variability ◽  
Plant Breeding ◽  
Block Design ◽  
Yield Component ◽  
Breeding Programs ◽  
Plant Weight ◽  
Randomized Block Design ◽  
Wide Variability ◽  
Medical Plant ◽  
High Heritability

Ciplukan (Physalis sp.) merupakan salah satu tumbuhan yang potensial untuk dikembangkan sebagai sumber biofarmaka dan buah di Indonesia. Peningkatan produksi ini dapat dilakukan melalui penyediaan varietas-varietas unggul ciplukan dengan meningkatkan kapasitas genetik melalui program pemuliaan tanaman. Pemuliaan tanaman akan berhasil jika terdapat keragaman genetik yang luas dan heritabilitas tinggi. Penelitian ini bertujuan untuk mempelajari keragaman genetik dan heritabilitas pada karakter komponen hasil dan hasil ciplukan. Percobaan menggunakan rancangan acak kelompok dengan 34 aksesi ciplukan sebagai perlakuan diulang tiga kali. Penelitian dilaksanakan di Kelurahan Areng-Areng, Kecamatan Junrejo, Kota Batu pada bulan Mei - September 2017. Karakter pada tanaman ciplukan ada yang mempunyai keragaman luas dan ada yang mempunyai keragaman sempit. Keragaman yang luas terdapat pada tinggi batang, jumlah bunga per tanaman, bobot per buah tanpa kelopak, bobot per buah dengan kelopak, jumlah buah per tanaman, jumlah buah segar per tanaman, bobot buah per tanaman dan bobot buah segar per tanaman. Keragaman yang sempit terdapat pada karakter diameter batang, jumlah cabang tersier, jumlah bunga per cabang tersier, panjang tangkai buah, panjang kelopak, diameter kelopak, panjang buah, diameter buah, dan kemanisan buah. Nilai heritabilitas pada semua karakter termasuk kriteria tinggi. Hal ini menunjukkan pengaruh genetik lebih besar dibandingkan dengan faktor fenotip pada penampilan karakter tanaman ciplukan. Ciplukan (Physalis sp.) is one of the potential plant to be developed as a source of medical plant and fruit in Indonesia. Increase production of this plant can be done through the provision of improved varieties of ciplukan by increasing the genetic capacity through plant breeding programs. Plant breeding will be successful if there is high genetic variability and heritability. This study aimed to study genetic variability and heritability on the character of yield component and yield in Physalis. The experiment used a randomized block design with 34 accessions of ciplukan as treatment repeated three times. The research was conducted in Areng-Areng sub-district, Junrejo District, Batu City from May until September 2017. Characters in ciplukan plants have wide and narrow variability. Characters that have a wide variability are stem height, number of flower per plant, number of fruits per plant, number of fruits per plant, weight per fruit without husks, weight per fruit with husk, weight of fruit per plant, and weight of fresh fruit per plant. Characters that have narrow variability are stem diameter, number of tertiary branching, number of flower per tertiary branching, length of fruit stalk, husk length, husk diameter, fruit length, fruit diameter, and sweetness. All characters have high heritability. This shows a greater genetic influence compared to phenotypic factors on the appearance of ciplukan characters. Physalis, genetic variablity, heritabilityKey words : 

scholarly journals Direct selection for phenotypic traits in carrot genotypes

2019 ◽  
Vol 37 (3) ◽  
pp. 354-358
Author(s):  
Agnaldo DF de Carvalho ◽  
Giovani O da Silva ◽  
Gabriel E Pereira
Keyword(s):  
Agronomic Traits ◽  
Block Design ◽  
Direct Selection ◽  
Phenotypic Traits ◽  
Crop Breeding ◽  
Breeding Programs ◽  
Randomized Block Design ◽  
Increase Productivity ◽  
Abstract Selection ◽  
Selection Of

ABSTRACT Selection of more productive carrot genotypes is fundamental for crop breeding programs aiming to increase productivity and reduce cost production. Thus, the aim of this work was to evaluate gains from direct selection and to measure its effects on other agronomic traits of interest in carrots. Thirty six carrot genotypes were evaluated in two experiments: the first, sown in the second half of November 2016 and the second one in the first week of March 2017. The experimental plots covered a useful area of 1.5 m2, in transversal rows and 0.10-m double spacing between single rows x 0.20-m between double rows in a randomized block design with 3 replicates. At 90 days, the incidence of leaf blight was evaluated using a note scale and 100 days after sowing, roots were harvested measuring the number and mass of total, commercial and non-commercial roots of each plot. The direct selection of commercial root mass allowed to estimate indirect and expressive gains for most evaluated traits, allowing to select seven genotypes (populations 758, 751, 737, 736, 735, 744 and 742) which can be released as cultivar or for the formation of a broader genetic-based population.

scholarly journals Potential of the ESA23B maize population for protein and oil content improvement

2003 ◽  
Vol 60 (2) ◽  
pp. 319-327 ◽  
Author(s):  
Andréa Mittelmann ◽  
José Branco de Miranda Filho ◽  
Gustavo Júlio Mello Monteiro de Lima ◽  
Claudete Hara-Klein ◽  
Ricardo Takao Tanaka
Keyword(s):  
Grain Yield ◽  
Protein Content ◽  
Oil Content ◽  
Zea Mays L ◽  
Block Design ◽  
Yield Data ◽  
Additive Variance ◽  
Maize Population ◽  
Randomized Block Design ◽  
Selection Of

Among the traits that may add commercial value to maize (Zea mays L.), those related to nutritional quality, specially protein and oil content, are of great interest to the feed industry. The objective of this work was studying the variability of protein and oil content, as well as yield, in a group of maize testcrosses. One hundred and twenty S1 families of the ESA23B maize population were crossed with two testers, an open-pollinated population (BR108) and an exotic line (CML269). Testcrosses were evaluated at two locations under a completely randomized block design with three replications. Ear and grain yield, protein and oil content were evaluated. The three-way interaction location x tester x progeny was significant for all traits, except for oil content. Differences among progenies were detected for all traits. Testcross means varied from 8.40% to 11.82% for protein content and from 3.77% to 5.10% for oil content. Hybrids with similar or superior means to the best check were identified for protein content, ear yield, and grain yield. Estimates of the interpopulation additive variance ranged from 0.553 to 1.124 for protein content; 0.034 to 0.057 for oil content (percent data); 132.13 to 521.74 for ear yield and 116.33 to 381.73 for grain yield (data in grams per plant). The population ESA23B can potentially be improved for all the traits studied. Associations among traits were weak, thus concomitant selection of quality and yield can be feasible.

scholarly journals Agronomic evaluation and clonal selection of ginger genotypes (Zingiber officinale Roseoe) in Brazil

2017 ◽  
Vol 35 (3) ◽  
pp. 275-284
Author(s):  
Eleonora Zambrano Blanco ◽  
José Baldin Pinheiro
Keyword(s):  
Agronomic Traits ◽  
Clonal Selection ◽  
Phenotypic Variability ◽  
Block Design ◽  
Genetic Correlations ◽  
Phenotypic Expression ◽  
Germplasm Collection ◽  
Environmental Variance ◽  
Breeding Programs ◽  
Selection Of

The analysis of the genetic diversity of ginger based on agronomic traits is essential to know its performance and to design breeding programs. In this study, we analyzed the phenotypic variability of 61 accessions of the ginger germplasm collection of the "Luiz de Queiroz" College of Agriculture at the University of Sao Paulo (ESALQ/USP) in a complete randomized block design with four replications. An analysis of variance test was performed and genetic parameters such as heritability, genetic variance, environmental variance, genetic-environmental variation ratio (CVg/CVe) and genetic correlations were estimated. There were highly significant differences (P≤0.01) among the accessions for all the agronomic traits analyzed. The CVg/CVe ratio (>1), along with the high heritability (>80%), showed a significant contribution of genetic factors on the phenotypic expression of plant height, rhizome thickness and yield traits, favoring the clonal selection of genotypes. Accessions Gen-29, Gen-29, Gen-32, Gen-36, Gen-37, Gen-40, Gen-41, Gen-42, Gen-50 were selected due to the best agronomic performance when compared to the rest of the germplasm. The results obtained may be useful in future breeding programs in Brazil.

scholarly journals Assessing the genotypic performance of carioca beans through mixed models

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.

scholarly journals Selection of Cowpea Lines for Multiple Traits by GYT Biplot Analysis

2020 ◽  
Vol 8 (2) ◽  
pp. 124
Author(s):  
Derivaldo Pureza da Cruz ◽  
Tâmara Rebecca Albuquerque de Oliveira ◽  
Andréa Barros Silva Gomes ◽  
Camila Queiroz da Silva Sanfim de Sant'Anna ◽  
Lília Marques Gravina ◽  
...  
Keyword(s):  
Grain Yield ◽  
Seed Weight ◽  
Block Design ◽  
Multiple Traits ◽  
R Software ◽  
Randomized Block Design ◽  
Productive Potential ◽  
Pod Length ◽  
100 Seed Weight ◽  
Selection Of

Cowpea is an African legume that was introduced to Brazil by Portuguese settlers in the mid-16th century. The productive potential of this crop may fluctuate depending on its environment. The objective of the present study was to select cowpea lines with high grain yield coupled with other traits of agronomic interest, such as good adaptability and stability, by the GYT biplot methodology. Twelve lines were evaluated in the years 2016 and 2017 in the municipality of Bom Jesus de Itabapoana, Brazil, in a randomized-block design with four replicates and two cultivars, which were used as controls. The following variables were evaluated: number of days to flowering, final stand, crop value, lodging, pod weight, pod length, seed number per pod, seed weight per pod, 100-seed weight (100SW), and grain yield. Analysis of variance was performed and GYT biplots were constructed using R software and the ggplot2 package. The GYT biplot graph analysis allowed for the selection of superior cowpea genotypes. In the combinations of traits observed, lines L1, L3, L5, L6, L8, and L9 were superior and cultivar Imponente stood out as one of the controls. The yield combinations GY*CV, GY*NDF, GY*LDG, GY*CV, GY*PW, GY*SNP and GY*P100G were positively correlated with each other but showed negative to highly negative correlations with GY*SWP and GY*TS.

Genetic variability studies for yield, yield contributing and quality traitsin okra [Abelmoschus esculentus (L.) Moench.]

2016 ◽  
Vol 50 (6) ◽  
Author(s):  
R. A. Jadhav ◽  
S. B. Bagwale ◽  
L. N. Jawale ◽  
D. B. Deosarkar
Keyword(s):  
Vitamin C ◽  
Plant Height ◽  
Iron Content ◽  
Block Design ◽  
Calcium Content ◽  
Phenotypic Selection ◽  
Randomized Block Design ◽  
Additive Gene ◽  
High Heritability ◽  
Number Of Branches

The present investigation was carried out during Kharif 2014. The experimental material consists of 40 different genotypes of okra with three checks Arka Anamika, Parbhani Kranti and Pusa Sawani. The materials were grown in randomized block design with three replications during Kharif 2014 on the field of Department of Agricultural Botany, College of Agriculture, VNMKV, Parbhani. The investigation carried out in the present study revealed that the genotypes 136 Thin, 003163, Kashi Pragati, Kashi Vibhuti and BO 13 showed better performance for traits namely plant height, length of fruit, calcium content, iron content, vitamin C content and fruit yield per hectare. Among the genotypes 136 Thin and 003163 had given highest yield. The high genotypic and phenotypic coefficient of variation was observed for characters namely number of branches, yield per hectare, yield per plot and yield per plant. All these traits indicate additive effect showed response for selection. High heritability estimates were found for characters like number of branches, yield per plot, iron content, yield per plant, plant height, vitamin C content, number of seeds per fruit (dry fruit), fruit bearing node and calcium content indicated good inheritance of these characters. High heritability coupled with high expected genetic advance was observed for characters like plant height, calcium content, yield per plant and yield per hectare, indicated presence of additive gene action and phenotypic selection may become more effective for desired genetic improvement.

scholarly journals Genotype-environment interaction in common bean cultivars with carioca grain, recommended for cultivation in Brazil in the last 40 years

2015 ◽  
Vol 15 (4) ◽  
pp. 244-250 ◽  
Author(s):  
Leiri Daiane Barili ◽  
Naine Martins do Vale ◽  
Adalgisa Lelis do Prado ◽  
José Eustáquio de Souza Carneiro ◽  
Fabyano Fonseca e Silva ◽  
...  
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Block Design ◽  
Environment Interaction ◽  
Ge Interaction ◽  
Breeding Programs ◽  
The Past ◽  
Genotype Environment Interaction ◽  
Randomized Block Design ◽  
New Cultivars

Abstract The purpose of this study was to analyze the effect of genotype-environment interaction (GE) on common bean cultivars with carioca grain (cream-colored beans with light brown stripes), recommended for cultivation by different Brazilian research institutions in the last 40 years. The experiments were carried out with 40 cultivars in four different environments (Coimbra and Viçosa, in the dry and winter seasons of 2013) using a randomized block design with three replications. The results showed an effective increase in grain yield resulting from the use of new cultivars from different Brazilian breeding programs in the past four decades. In addition, the analysis of the GE interaction indicated that the cultivars recommended after 2005 combined high mean grain yield, wide adaptability and high or stability.

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