scholarly journals Selection of corn inbred lines, testers, and hybrids adapted to second-crop environments

2020 ◽  
Vol 55 ◽  
Author(s):  
Rodrigo Gomes ◽  
Marcos Ventura Faria ◽  
Jocimar Costa Rosa
Keyword(s):  
Inbred Lines ◽  
The State ◽  
High Yield ◽  
Crop Season ◽  
Mato Grosso ◽  
The Stability ◽  
Corn Inbred ◽  
Main Effects ◽  
Selection Of ◽  
Single Cross Hybrids

Abstract: The objective of this work was to evaluate the yield performance, adaptability, and stability of corn (Zea mays) topcross hybrids in nine environments in Brazil, in order to select inbred lines, testers, and promising hybrid combinations for these environments in the second crop season. The trials were carried out during the second crop season of 2017, in six sites in the state of Paraná and three in the state of Mato Grosso do Sul, Brazil. Sixty-six single-cross hybrids, made up of 33 inbred lines crossed with two testers, were evaluated. The stability of the genotypes was assessed by the Schmidt & Cruz method and by the additive main effects and multiplicative interaction (AMMI) methodology. In addition, the genetic parameters and the general combining ability of the testers were estimated. Tester 2 is the most adapted to discriminate inbred lines in the second-crop environments. Inbred lines 12, 21, 23, and 32 are recommended for obtaining hybrids to be cultivated in the second crop season due to their good adaptability and stability and high yield in the crosses in which they participated. The HS123, HS223, and HS232 hybrids present the best performance and are the most recommended for the second-crop environments.

scholarly journals GGE-BIPLOT OF MULTIVARIATE INDEX TO SELECT MAIZE PROGENIES FOR EFFICIENT ASSOCIATION WITH Azospirillum brasiliense1

2021 ◽  
Vol 34 (4) ◽  
pp. 739-751
Author(s):  
FELIPE CECCON ◽  
LIVIA MARIA CHAMMA DAVIDE ◽  
MANOEL CARLOS GONÇALVES ◽  
ADRIANO DOS SANTOS ◽  
ELAINE PINHEIRO REIS LOURENTE
Keyword(s):  
Selection Index ◽  
High Yield ◽  
Environment Interaction ◽  
Gge Biplot ◽  
Mato Grosso ◽  
Genotype Environment Interaction ◽  
Two Cities ◽  
The Stability ◽  
Mato Grosso Do Sul ◽  
Selection Of

ABSTRACT Maize is widely cultivated in Brazil, and nitrogen is a major nutrient for its yield. Azospirillum brasiliense bacteria help in plant nutrient supply; however, maize-Azospirillum symbiosis is not very efficient and requires selection of genotypes with a more efficient association. Multivariate indexes facilitate selection using a single value, and GGE-biplot analysis enables the visualization of the genotype-environment interaction from this value. The present study aimed to select progenies that effectively associate with the bacteria and study the efficiency of progeny selection using a multivariate index observed in the GGE-biplot method. The experiments were conducted in two cities in the state of Mato Grosso do Sul. In a simple 16 × 16 lattice, 256 genotypes were evaluated in the presence and absence of diazotrophic bacteria. PH, SL, SD, FI, HGM, SS, and GY were measured for the construction of a selection index. Genotypes exhibited significant genotype–environment interactions for all evaluated traits, allowing their use in the selection index. High-yield genotypes were not those with the highest selection index values. The traits GY, SD, HGM, SS, SL, and PH contributed the most to the construction of the index. The no-till system may have contributed to the weaker response of maize inoculated with Azospirillum brasiliense. Genotype 96 had the highest values of the characteristics used to calculate the GISI, along with the stability between environments.

scholarly journals Identification of core locations for soybean breeding in Southern Brazil

2019 ◽  
Vol 54 ◽  
Author(s):  
Gilvani Matei ◽  
Andrei Daniel Zdziarski ◽  
Leomar Guilherme Woyann ◽  
Rodrigo Zanella ◽  
Vinícius de Bitencourt Bez Batti ◽  
...  
Keyword(s):  
Block Design ◽  
The State ◽  
Phenotypic Variance ◽  
Environment Interaction ◽  
Genotypic Effect ◽  
Environment Effect ◽  
Mato Grosso ◽  
Genotype Environment Interaction ◽  
Main Effects ◽  
Selection Of

Abstract: The objective of this work was to identify core locations in two soybean macroregions in Brazil for the evaluation and selection of soybean (Glycine max) lineages. Twenty-two cultivars were tested in 23 locations in these two macroregions (MR1 and MR2), during four years, from 2012 to 2015. Trials were conducted in a randomized complete block design with three replicates. All analyses were performed using the GGEbiplot software. The genotype main effects plus genotype × location interaction + genotype main effects plus genotype × environment interaction and genotypic effect vs. genotype x environment effect analyses were used to identify core locations, i.e., locations with high representativeness and consistency of results. Chapada, in the state of Rio Grande do Sul, and Maracaju, in the state of Mato Grosso do Sul, were the core locations in MR1 and MR2, respectively. These locations were the most representative and consistent over the years, and the genotypic effect explained a high proportion of phenotypic variance.

scholarly journals Stability of Wheat Genotypes by AMMI and Yield Evaluated under Peninsular Zone of India

2021 ◽  
Author(s):  
Ajay Verma ◽  
G.P. Singh
Keyword(s):  
Weighted Average ◽  
Principal Component ◽  
Efficient Estimation ◽  
High Yield ◽  
First Year ◽  
Wheat Genotypes ◽  
Stability Measure ◽  
Linear Behaviour ◽  
The Stability ◽  
Selection Of

Background: Efficient estimation of main and interaction effects under multi environment trials had been carried out by AMMI. Studies with low proportion of the variance explained by first interaction principal component IPCA1 under AMMI analysis had been reported biased interpretation for the stability of the genotypes.Methods: Weighted Average of Absolute scores (WAASB), quantitative stability measure had been recommended for selection of productive genotypes with broad adaptation. The selection of promising genotypes had been assisted by use of superiority index (WAASBY) that considered simultaneous use of yield and stability by allowing variable weighting mechanism for yield and stability.Result: Wheat GW509 and HI1633 genotypes had been identified by stability measure WAASB for the first year. While Superiority index considered stability and high yield settled for HI1633 and Raj4083 genotypes. Analytic measures of adaptability PRVG and MHPRVG observed suitability of HI1633 and Raj 4083. SI expressed positive linear behaviour with yield, MHPRVG and PRVG measures. While stability measure WAASB maintained moderate negative correlation with yield, SI, MHPRVG and PRVG. Wheat genotypes HI1633, HI1641 and HI1646 identified by stability measure for the next year of study. Superiority index selected HI1641, HI1633 and MACS6752 genotypes. SI expressed direct linear relation with yield, MHPRVG and PRVG. Stability measure exhibited indirect relationships with SI, MHPRVG, PRVG and yield Wheat genotypes HI1633, Raj 4083 for first year and HI1641, MACS6752 for the second year of study.

scholarly journals Soybean-corn succession according to seeding date

2018 ◽  
Vol 53 (1) ◽  
pp. 22-29 ◽  
Author(s):  
Rodrigo Arroyo Garcia ◽  
Gessí Ceccon ◽  
Guilherme Afonso da Silva Sutier ◽  
Anna Luiza Farias dos Santos
Keyword(s):  
Grain Yield ◽  
The State ◽  
Southern Region ◽  
Crop Season ◽  
Mato Grosso ◽  
Growing Seasons ◽  
Seeding Date ◽  
Sowing Dates ◽  
Mato Grosso Do Sul

Abstract: The objective of this work was to evaluate the grain yield of soybean and corn cultivars cropped in succession, in different sowing dates. The experiment was carried out in the municipality of Dourados, in the state of Mato Grosso do Sul, Brazil, during three growing seasons, in the sowing dates: 9/15, 10/1, 10/15, and 11/1 for soybean; and 2/1, 2/15, 3/1, and 3/15 for corn. Although soybean yields are strongly affected by the crop season, sowing between late September and early October results in higher long-term yields. Planting corn in succession in mid-February provides the highest grain yield in the southern region of the state Mato Grosso do Sul; therefore, there is no need for an early soybean sowing in September, in order to ensure corn planting in January. Soybean-corn succession in which soybean is sown in early October and corn in mid-February results in higher total grain yields and reduces the climatic risk associated with these crops in the region.

scholarly journals Inbreeding depression and average genetic components in green corn genotypes

2017 ◽  
Vol 47 (5) ◽  
Author(s):  
Maurício Carlos Kuki ◽  
Carlos Alberto Scapim ◽  
Ronald José Barth Pinto ◽  
Alex Sandro Torre Figueiredo ◽  
Rodrigo Iván Contreras-Soto ◽  
...  
Keyword(s):  
Inbreeding Depression ◽  
Block Design ◽  
Inbred Lines ◽  
Additive Effects ◽  
Crop Season ◽  
Corn Production ◽  
Genetic Components ◽  
Randomized Complete Block Design ◽  
Corn Inbred ◽  
Plot Design

ABSTRACT: This study aimed to evaluate the inbreeding depression and average genetic components in seven hybrids and two open pollinated cultivars for green corn production, as well as to select the best genotypes in order to obtain base populations for inbred lines extraction. The experiment was carried out in a randomized complete block design with four replications, in a split plot design, with inbreeding levels arranged in the plots and the different genotypes distributed over the subplots, in the municipality of Sabáudia - PR, during the 2014/15 crop season. Higher values of dominance and inbreeding depression were observed for yield of both unhusked and commercial ears. Higher additive effects were detected on length and diameter of commercial ears. The genotypes AM811, Cativerde 02 and AG4051 showed greater probability of obtaining highly productive and higher quality green corn inbred lines.

scholarly journals Uso potencial de cruzas simples emparentadas de ciclo vegetativo intermedio para regiones subtropicales de México.

2016 ◽  
Vol 8 (2) ◽  
pp. 72
Author(s):  
Ernesto Preciado ◽  
Arturo Terron
Keyword(s):  
Genetic Material ◽  
Inbred Lines ◽  
High Yield ◽  
Maize Breeding ◽  
Release Process ◽  
Experimental Station ◽  
Inbred Parent ◽  
Single Cross ◽  
Yield Trials ◽  
Single Cross Hybrids

The maize breeding program and the Bajío Experimental Station, which belongs to the National Institute of Agriculture, Forestry and Livestock (INIFAP), located in the State of Guanajuato, Mexico, during 1994 and 1995, we evaluated yield trials with four types of genetic material: a. Original inbred lines wich are parents of superior single croses, under the release process. b. Modified parts coming from the cross of the original inbred parent, with a relative inbred line derived from the same germplasm source. c. Theoriginal single cross hybrids, and d. The modifield new crosses from the related parents. The results showed that the modified parents outyield in the original inbred lines, in some cases was of more than 300%. Moreover, some modified hybrids were statistically similar to the original single cross hybrids, as well as in some later commercial checks. The heterotic response, previously identified in specific single hybrids, was kept when we utilized modified parents with high yield. All this supported the idea that this kind of hybrids represent a large potential in the regions where the use of conventional single cross hybrids, is still limited.

scholarly journals A Comissão de Linhas Telegráficas Estratégicas do Mato Grosso ao Amazonas (CLTEMTA) - 1907 a 1915: tecendo caminhos no sertão

GeoTextos ◽  
2018 ◽  
Vol 14 (2) ◽  
Author(s):  
Cristiane Aparecida Zambolin Teodoro ◽  
Carlo Eugênio Nogueira
Keyword(s):  
The State ◽  
Sovereign Power ◽  
Mato Grosso ◽  
Composition Process ◽  
Selection Of ◽  
State Body

Com o objetivo de discutir algumas das contribuições da Comissão de Linhas Telegráficas Estratégicas do Mato Grosso ao Amazonas - CLTEMTA (1907 a 1915) para os processos de apropriação e domínio territorial desenvolvidos pelo Estado Republicano nas áreas atualmente correspondentes ao Noroeste do Brasil, em Mato Grosso, no então denominado “sertão vazio”, selecionou-se nesse texto um recorte da dissertação de mestrado intitulada “O Domínio Territorial Republicano manifestado na Multiexpressividade da Comissão Rondon”, na qual pretendeu-se apontar as ações de reconhecimento territorial executadas nos primeiros anos da CLTEMTA que fortaleceram a corporatura do Estado associada ao exercício de seu poder soberano no território. Os dados apresentados foram resultantes da discussão e da análise das Conferências realizadas no ano de 1910 por Cândido Mariano da Silva Rondon, as quais apresentam um importante perfil das ideologias geográficas existentes no período, cuja materialidade se faz expressa em uma representação cartográfica dos avanços obtidos nas expedições de estudos e reconhecimento, que foram determinantes para o processo de legitimação estatal em uma sociedade que se encontrava em processo de composição. Abstract THE COMMISSION OF STRATEGIC TELEGRAPHIC LINES FROM MATO GROSSO TO AMAZONAS (CLTEMTA) - 1907 TO 1915: WEAVING TRACES IN SERTÃO With the objective to discussing some of the Strategic Telegraphic Lines from Mato Grosso to Amazonas contributions – CLTEMTA (1907 to 1915) to the processes of appropriation and territorial domain developed by the Republican State in the areas currently corresponding to the Northwest of Brazil, in Mato Grosso, in the so-called “empty hinterland”, a selection of the masters dissertation titled “The Republican Territorial Domain manifested in the Multi-Pressiveness of Rondon Commission” was selected in this text, in which it was intended to point out the actions of territorial recognition executed in the first years of CLTEMTA that strengthened the state body associated with the exercise of its sovereign power in the territory. The data presented were the discussions results and analysis of the Conferences held in 1910 by Cândido Mariano da Silva Rondon, which present an important profile of the geographical ideologies existing in the period, whose materiality is expressed in a cartographic representation by the advances obtained in the expeditions of studies and recognition that were decisive for the process of state legitimation in a society that was in its composition process.

Development and Selection of Purple Sweet Corn Inbred Lines

2021 ◽  
Author(s):  
Pham Quang Tuan ◽  
Nguyen Trung Duc ◽  
Nguyen Thi Nguyet Anh ◽  
Vu Thi Xuan Binh ◽  
Vu Van Liet
Keyword(s):  
Sweet Corn ◽  
Inbred Lines ◽  
Corn Inbred ◽  
Selection Of

scholarly journals The state and main directions of onion crop breeding of FSBSI FSVC

2021 ◽  
pp. 24-28
Author(s):  
L. V. Krivenkov ◽  
A. F. Agafonov ◽  
V. V. Logunova ◽  
T. M. Seredin
Keyword(s):  
Winter Hardiness ◽  
The State ◽  
Biologically Active ◽  
High Yield ◽  
Federal State ◽  
Dry Matter Content ◽  
High Productivity ◽  
Early Maturation ◽  
Keeping Quality ◽  
Selection Of

The article presents information about the research directions, the results of work and achievements in the selection of onion crops in the Federal State Budgetary Scientific Institution "Federal Scientific Vegetable Center". Brief historical information is given about the work of the outstanding scientists who headed the laboratory – V.V. Ordynsky, A.D. Plinka, I. I. Yershov, A.F. Agafonov. At present, new varieties and hybrids of onion crops of domestic selection that meet all the requirements are required for industrial production.The FSBSI FSVC is working on studying the breeding material of onion crops and identifying promising ones with a complex of economically valuable characteristics for creating fundamentally new, competitive varieties and hybrids for various zones of the Russian Federation. Selection of individual types of bows is carried out: onions – for early maturation, consistently high yield, high dry matter content (17-22%), keeping quality, resistance to peronosporosis, cervical and bacterial rot, with a different rate of reaction to the length of the day, for winter and spring crops, in sowing culture – with a cold method of storing sowing, good keeping quality; perennial onions – winter hardiness, high productivity of green mass, high content of biologically active substances and high resistance to diseases; winter garlic – winter hardiness, yield, resistance to fusarium and bacteriosis, keeping quality during storage; spring garlic – high yield of large cloves, high shelf life; shallots –ultra-fast ripeness, high productivity, keeping quality during storage. The results of the long-term work of the FSVC were 140 varieties of 16 types of onion crops of various uses. Modern varieties of onion for industrial cultivation were created and submitted to the State Variety Testing in 2020: F1 Drakon, AFBAK.

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