Penentuan Indeks Seleksi untuk Galur Dihaploid Padi Sawah Tadah Hujan Berdaya Hasil Tinggi

Rainfed rice breeding for high yield is an alternative to increase national rice production. The breeding can beaccelerated using anther culture technique. The selection of high productivity lines may be more effective if it also involvesthe traits contributing to or affecting the yield traits. This study aimed at determining suitable characters as selection criteriaand obtain a selection index model for high yielding doubled haploid rainfed rice lines. The experiment was conductedin a greenhouse of ICABOGRAD, Bogor and Sawah Baru Experimental Station, Bogor Agricultural University using arandomized complete block design (RCBD) with three replications. Thirty doubled haploid lines derived from anther cultureand two check varieties namely Ciherang and Inpari 18 were used. The results showed that plant height (TT), number of filledgrain per panicle (GI), and productivity (PRD) could be used as suitable selection characters. The determination of selectionindex obtained a selection model which was Selection index = 0.48 PRD + 0.31 JGI - 0.31 TT. This model can be used toselect high yielding doubled haploid rainfed rice lines.

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Agronomic and yield selection of doubled haploid lines of rainfed lowland rice in advanced yield trials

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d220754 ◽

2021 ◽

Vol 22 (7) ◽

Author(s):

Miftahur Rizqi Akbar ◽

Bambang Sapta Purwoko ◽

ISWARI SARASWATI DEWI ◽

WILLY BAYUARDI SUWARNO ◽

SUGIYANTA SUGIYANTA ◽

...

Keyword(s):

Doubled Haploid ◽

Selection Process ◽

Block Design ◽

Selection Index ◽

Lowland Rice ◽

Agronomic Characters ◽

Doubled Haploid Lines ◽

Rainfed Lowland ◽

Yield Trials ◽

Selection Of

Abstract. Akbar MR, Purwoko BS, Dewi IS, Suwarno WB, Sugiyanta, Anshori MF. 2021. Agronomic and yield selection of doubled haploid lines of rainfed lowland rice in advanced yield trials. Biodiversitas 22: 3006-3012. Selection process is important step to obtain high yielding variety. This study aimed to obtain information on agronomic performance of doubled haploid lines of rainfed rice in advanced yield trials and select the best lines for multi-location yield trials. Two experiments were conducted in Bogor and Subang using a randomized complete block design for each location and consisted of 35 doubled haploid lines and two check varieties namely Ciherang and Inpari 18 as a treatment. The result revealed that interaction between genotype and environment (G x E) significantly affected all agronomic characters, except on the panicle length. Characters with high heritability value were all agronomic characters except number of productive tillers and productivity. Genotypic correlation analysis showed that number of productive tillers and weight of 1000 grains had significant and positive correlation with productivity. The selection used weighted selection index based on multivariate analysis. Fourteen lines were selected for multi-location yield trials. These lines had characteristics as follows: number of productive tillers (14.0-17.7 tillers), weight of 1000 grains (24.7-32.5 g), and productivity (5.0-6.2 ton ha-1). The selected lines can be evaluated further to obtain superior lines in multi-location trials.

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Agronomic potential of BC1F2 dwarf round tomato populations

Ciência e Agrotecnologia ◽

10.1590/1413-7054202044028819 ◽

2020 ◽

Vol 44 ◽

Author(s):

Rafael Resende Finzi ◽

Gabriel Mascarenhas Maciel ◽

Hugo Gabriel Peres ◽

Marina Freitas e Silva ◽

Joicy Vitória Miranda Peixoto ◽

...

Keyword(s):

Block Design ◽

Selection Index ◽

Genetic Material ◽

Fruit Shape ◽

Economic Benefits ◽

Fruit Weight ◽

Soluble Solids ◽

Transverse Diameter ◽

Agronomic Potential ◽

Selection Of

ABSTRACT The use of dwarf lines to obtain mini-tomato hybrids has provided agronomic and economic benefits. In Brazil, round tomatoes predominate over other varieties. The benefits of using a dwarf parent in round tomato hybrids has yet to be explored, making it important to develop dwarf round tomato lines. Backcrossing is the most suitable method to develop these lines. Evaluation and selection of the dwarf populations can improve the development of such lines. Thus, the aim of this study was to select BC1F2 populations of dwarf round tomatoes with agronomic potential and high-quality fruit. The study was conducted at the Vegetable Experimental Station of the Federal University of Uberlândia (UFU). A randomized block design was used, with 15 treatments and three replicates. The genetic material analyzed consisted of 12 BC1F2 dwarf tomato populations, plus both parents (recurrent and donor) and a commercial hybrid. The characteristics assessed were: average fruit weight (g), total soluble solids (ºBrix), number of locules (locules per fruit-1), fruit shape, pulp thickness (cm), longitudinal (cm) and transverse fruit diameter (cm), internode length (cm) and plant height (cm). The data were submitted to mean testing, multivariate analyses and a selection index. In general, average fruit weight in the dwarf populations increased significantly after the first backcross, with some fruits exhibiting a similar shape to round tomatoes. Selection of the populations UFU-DTOM7, UFU-DTOM10, UFU-DTOM5, UFU-DTOM9, and UFU-DTOM3 resulted in an estimated 6% increase in the number of locules, transverse diameter, TD/LD ratio and average fruit weight. The BC1F2 dwarf populations UFU-DTOM7 and UFU-DTOM10 were the most promising for develop inbred lines with round fruits. Despite the considerable progress achieved in this study, we suggest a second backcross, in order to obtain lines and, posteriorly, hybrids with round fruits and compact plants.

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Short Communication: Selection of doubled haploid lines of rainfed lowland rice in preliminary yield trial

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d201003 ◽

2019 ◽

Vol 20 (10) ◽

Author(s):

Miftahur Rizqi Akbar ◽

Bambang Sapta Purwoko ◽

Iswari Saraswati Dewi ◽

Willy Bayuardi Suwarno ◽

Sugiyanta

Keyword(s):

Doubled Haploid ◽

Short Communication ◽

Lowland Rice ◽

Yield Potential ◽

High Yield ◽

Agronomic Characters ◽

Doubled Haploid Lines ◽

Yield Trial ◽

Rainfed Lowland ◽

Selection Of

Abstract. Akbar MR, Purwoko BS, Dewi IS, Suwarno WB, Sugiyanta. 2019. Short Communication: Selection of doubled haploid lines of rainfed lowland rice in preliminary yield trial. Biodiversitas 20: 2796-2801. Yield trial is an important step in rice breeding program. This research was aimed at evaluating agronomic characters and selecting the best doubled haploid rainfed rice lines for next advanced yield trial. An experiment was conducted in Indramayu from March to August 2017. The research was arranged in randomized complete block design (RCBD) with three replications. Materials used were fifty-eight doubled haploid lines and two check varieties namely Ciherang and Inpari 18. The results revealed that all observed characters had broad genetic variability and high heritability. The number of productive tillers and the number of filled grains per panicle had a positive correlation and direct effect on productivity. Based on index selection, thirty lines were selected to have good agronomic characters and high yield. These lines had characteristics of plant height (85.7-124.7 cm), number of productive tillers (8.6-14.8 tillers), day to harvest (104.0-117.3 days), number of filled grains per panicle (136.7-264.7 grains), number of total grains per panicle (152.0-305.7 grains), weight of 1000 grain (21.5-31.3 g), and productivity (4.1-6.8 tons ha-1). Keywords: good agronomic trait, high yield potential, selection index

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Breeding full-sib families of sugar cane using selection index

Ciência Rural ◽

10.1590/s0103-84782014000400005 ◽

2014 ◽

Vol 44 (4) ◽

pp. 605-611 ◽

Cited By ~ 7

Author(s):

Livia Marcon Almeida ◽

Alexandre Pio Viana ◽

Antônio Teixeira do Amaral Júnior ◽

Josil de Barros Carneiro Júnior

Keyword(s):

Sugar Cane ◽

Block Design ◽

Selection Index ◽

Breeding Program ◽

Growing Seasons ◽

Randomized Block Design ◽

Sib Families ◽

Number Of Stems ◽

Selection Stage ◽

Selection Of

An experiment with families belonging to the first selection stage (T1) of the Sugar Cane Breeding Program (PMGCA) of the Universidade Federal Rural do Rio de Janeiro (UFRRJ)/RIDESA was carried out in the Plant Disa, located in the municipality of Conceição da Barra-ES, in 2006, aiming to evaluate families, for the selection of superior plants for the later stages of the breeding program of the culture. Sixty-eight full-sib families and three genotypes considered standards with potential recommendation for the area under study were evaluated. The experiment was arranged in a statistical randomized block design, in which the families were grouped into four sets. Each set had four replicates and one hundred seedlings per plot, with spacing of 0.5 meters between plants and 1.40 between rows. The evaluations were conducted during two growing seasons, corresponding to the first and second ratoon, 2008 and 2009, respectively. The traits stem diameter (DMC), total weight of the plot (P), number of stems (NC) Brix of the lower stem (Brix PE) and Brix of the upper stem (Brix PT) were assessed. All traits were significant for the genotypes, by the F test (P<0.01), in joint analyses of environments, which reveals significant differences between families. The values found in this study for the genetic variation coefficient (CVg) indicate great potential for success in breeding programs targeting at the selection of the traits evaluated. The highest gains were achieved when the indices of Smith and Hazel and Mulamba and Mock were used, which allowed simultaneous superior gains in all traits for the best families.

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Progressive Poling of Large Area, High r33 Electro-Optic Polymer SEO100c

Applied Sciences ◽

10.3390/app11178108 ◽

2021 ◽

Vol 11 (17) ◽

pp. 8108

Author(s):

Michael Maurer ◽

Evan Gawron ◽

Christopher Middlebrook

Keyword(s):

Extended Period ◽

High Yield ◽

Large Area ◽

Device Structure ◽

Poling Process ◽

Electro Optic ◽

Waveguide Modulator ◽

The Impact ◽

Selection Of

SEO100c, an EO-polymer, has been reported of having an r33 in excess of 100 pm/V. Experimental poling research was performed on rib waveguide modulator for device design and development. Reported is the determination of the impact that temperature and voltage have on the poling of a SEO100c waveguide device in order to maximize the r33 while avoiding damage to the device structure ensuring high yield in manufacture. The poling process is shown to have a nonlinear relationship between r33 and poling field aiding in the selection of achievable poling voltages for required r33 values. Device thermal stability is quantified and reported for the complete poling process and the impacts upon r33. Investigation into the possible relaxation of device r33 is measured over an extended period demonstrating desirable use within deployable devices.

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Simultaneous Selection of Sweet-Waxy Corn Ideotypes Appealing to Hybrid Seed Producers, Growers, and Consumers in Thailand

Agronomy ◽

10.3390/agronomy12010087 ◽

2021 ◽

Vol 12 (1) ◽

pp. 87

Author(s):

Abil Dermail ◽

Aphakorn Fuengtee ◽

Kamol Lertrat ◽

Willy Bayuardi Suwarno ◽

Thomas Lübberstedt ◽

...

Keyword(s):

Block Design ◽

Selection Index ◽

F1 Hybrids ◽

Eating Quality ◽

Blind Test ◽

Early Maturity ◽

Simultaneous Selection ◽

Waxy Corn ◽

Corn Hybrid ◽

Selection Of

Multi-trait selection helps breeders identify genotypes that appeal to divergent groups of preferences. In this study, we performed simultaneous selection of sweet-waxy corn hybrids on several traits covering the perspectives of consumers (taller kernel depth, better eating quality), growers (early maturity, shorter plant stature, and high ear yield), and seed producers (high flowering synchrony, acceptable seed yield, and good plant architecture). Three supersweet corn lines and 8 waxy corn lines were intercrossed to generate 48 F1 hybrids according to North Carolina Design II, and these genotypes were laid out in a randomized complete block design with 3 replications across 2 seasons between 2017 and 2018. A sensory blind test on sweetness, stickiness, tenderness, and overall liking was conducted to assess the eating quality of steamed corn samples. Two methods of simultaneous selection, namely unweighted selection index and overall rank-sum index (ORSI), were applied to rank crosses, following all targeted groups of preferences. Genetic parameters and genetic gain were estimated to evaluate the effectiveness of those selection methods. Both approaches had similar patterns of preferable realized gain on each given trait and could identify similar top five crosses with only slight order changes, implying that these methods were effective to rank genotypes according to given selection criteria. One of the tested crosses, 101L/TSC-10 × KV/mon, consistently had the highest unweighted selection index in the dry (7.84) and the rainy (7.15) seasons and the lowest ORSI (310), becoming a promising candidate as synergistic sweet-waxy corn hybrid appealing to consumers, growers, and seed producers. The expected ideotypes of sweet-waxy corn hybrid are discussed.

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DETERMINATION OF THE GENETICALLY VALUABLE CORN SAMPLES AT THE CREATION OF THE SOURCE MATERIAL FOR THE CORN SELECTION

EUREKA Life Sciences ◽

10.21303/2504-5695.2016.00108 ◽

2016 ◽

Vol 2 ◽

pp. 44-50

Author(s):

Larisa Chernobay

Keyword(s):

Crop Production ◽

Source Material ◽

Artificial Infection ◽

High Productivity ◽

The Creation ◽

New Generation ◽

Selection Of ◽

Selection Work

For selection of the lines of new generation were used the donors of tolerance to the disease exciters and introduced the modified methods of artificial infection and selection that allowed create the new source material of corn. There were received 302 lines of UKC (Ukraine, Kharkiv, Chernobay) tolerant to the bubble smut that are characterized with valuable agricultural signs. Among them were separated 21 lines with the high productivity and valuable agricultural signs: UKC 85-2, UKC 80-3, UKC 80-2, UKC 135-2, UKC 155-2, UKC 96, UKC 86, UKC 142, UKC 83, UKC 96-2, UKC 129-2, UKC 164,UKC 83-2, UKC 88-2, UKC 131, UKC 147, UKC 144-2, UKC 167,UKC 164-2, UKC 90-2, UKC 163-2; were created lines with the complex tolerance to the bubble smut and crop moth with the high productivity: UKC 144-2, UKC 167, UKC 164-2, UKC 90-2, UKC 163-2. The UKC lined were included into selection work in the laboratory of selection and seeding of the corn of the Institute of crop production of V. Y. Yuriev, NAAS of Ukraine.

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Advanced Yield Trial of F7 Upland Rice Lines with Lodging Resistance in Bangka Regency, Bangka Belitung Islands Province, Indonesia

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/926/1/012022 ◽

2021 ◽

Vol 926 (1) ◽

pp. 012022

Author(s):

E D Mustikarini ◽

G I Prayoga ◽

R Santi ◽

N P E Sari

Keyword(s):

Rice Plant ◽

Upland Rice ◽

Block Design ◽

High Yield ◽

Red Rice ◽

Lodging Resistance ◽

Randomized Block Design ◽

Yield Trial ◽

Experiment Method ◽

Selection Of

Abstract Upland rice with a high yield becomes a priority in rice breeding activities. High yield can be obtained if the rice plant has lodging resistance. This study aims to determine the yield and selection of F7 upland rice lines as the candidate for superior varieties with lodging resistance. The research was conducted in ultisol land, Bangka Regency, Bangka Belitung Islands Province. The study used the experiment method with randomized block design (RBD) with three replications. The treatment used F7 upland rice lines and 5 genotypes as check varieties. The five of F7 lines used were 19I-06-09-23-03, 21B-57-21-21-23, 23F-04-10-18-18, 23A-56-20-07-20 and 23A-56-22-20-05. The five check viarieties used were Danau Gaung, Inpago 8, Inpago 12, Rindang and Situ Patenggang. Data was analyzed using ANOVA and Least Significant Increase (LSI) test. The results showed that 2 lines had a higher yield than the comparison genotypes were 23A-56-22-20- 05 and 23F-04-10-18-18. Hence, the recommended lines as the candidates for superior varieties with lodging resistance are 23A-56-22-20-05 for red rice type and 23F-04-10-18-18 for white rice type.

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Determination of Education Scholarship Recipients Using Preference Selection Index

10.31227/osf.io/hsfwr ◽

2017 ◽

Author(s):

Andysah Putera Utama Siahaan ◽

Mesran Mesran

Keyword(s):

Decision Support ◽

School Leadership ◽

Selection Index ◽

Scholarship Recipients ◽

High School Leadership ◽

Effective Decision ◽

The Government ◽

Support Methods ◽

Selection Of

The decision taken in the selection of scholarship recipients for students is one of the responsibilities held by the stakeholders at the high school leadership level. The decision-making stage consists of compliance with the terms or criteria set by the government as the scholarship provider. Implementation of decision support methods for selection of scholarship recipients is required. This can help the leadership to make the selection better. Many methods in decision support systems can solve and make decisions better, including preference selection index. The use of preference selection index applied in the decision support system will result in a more effective decision.

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Phenotypic Characterization of Quinoa (Chenopodium quinoa Willd.) for the Selection of Promising Materials for Breeding Programs

Plants ◽

10.3390/plants10071339 ◽

2021 ◽

Vol 10 (7) ◽

pp. 1339

Author(s):

Elsa Helena Manjarres-Hernández ◽

Diana Marcela Arias-Moreno ◽

Ana Cruz Morillo-Coronado ◽

Zaida Zarely Ojeda-Pérez ◽

Agobardo Cárdenas-Chaparro

Keyword(s):

Grain Quality ◽

Block Design ◽

Descriptive Analysis ◽

Selection Index ◽

Chenopodium Quinoa ◽

Morphological Characteristics ◽

Phenotypic Characterization ◽

Breeding Programs ◽

And Cluster Analysis ◽

Selection Of

Quinoa is an ancestral crop in the Andean region, characterized by its adaptability to different agroclimatic conditions, great nutritional value, and broad genetic variability. A preliminary approach for understanding the genetics of quinoa materials entails a morphologic characterization, which can provide the basis for the selection of materials that satisfy the needs of farmers and consumers. Therefore, this study aimed to evaluate the phenotypic characteristics of thirty genetic C. quinoa accessions for the selection of outstanding accessions in terms of yield and grain quality. A randomized complete block design was used, with nine replications for each accession under greenhouse conditions. Nine quantitative and twelve qualitative descriptors were evaluated with descriptive analysis, Spearman correlation variance, and multivariate and cluster analysis. The results showed that the accessions with heights greater than the average (>176.72 cm) and long panicles (>57.94 cm) presented lower yields and smaller seed sizes, thus decreasing the grain quality. The multivariate and cluster analyses established groups of accessions with good yields (>62.02 g of seeds per plant) and stable morphological characteristics. The proposed selection index, based on yield components and morphological descriptors, indicated four accessions as potential parents for quinoa breeding programs in Colombia.

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