scholarly journals Selección temprana de líneas S1 de maíz ricas en lisina: I probadores.

2016 ◽  
Vol 9 (2) ◽  
pp. 65
Author(s):  
María Cristina Vega ◽  
Enrique Navarro ◽  
José Espinoza ◽  
Gustavo A. Buciaga ◽  
José Luis Guerrero
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Agronomic Performance ◽  
Lysine Content ◽  
Fusarium Spp ◽  
Maize Breeding ◽  
High Lysine ◽  
Genetic Base ◽  
Randomized Complete Block Design ◽  
Normal Performance

This research involved ninety-six S1 maize lines with the opaque-2 gene that carne from populations 63 (26 lines), 65 (12 lines), and 68 (58 lines) from the CIMMYT maize breeding programo The S1 lines selected in the laboratory because of their high lysine content were crossed with five testers that had a different genetic base: a synthetic variety, two early lines derived from this variety, and two single intermediate crosses of normal performance. The test crosses were evaluated and compared with five control s (two commercial and three experimental hybrids) using a randomized complete block design in two sites in Mexico during 1992. The objecti ves of this research were to select SI lines in early generations according to their agronomic performance, grain lysine content, and GCA grain yield, and to compare testers' efficiency in discriminating S1 lines. On average, the SI lines of population 63 showed a greater grain yield as compared to that of populations 65 and 68 combined with all testers, except in the case of the synthetic tester YS- 201-M. A line from population 65 combined with tester B3 x B5 showed the highest grain yield (10,23 t ha-I), representing a superiority of 4% above the best commercial hybrid, AN- 447. A total ofthirty-one Sllines were selected based on their agronomic attributes and grain yield: 13, 14, and 4 from populations 63, 65 and 68 respectively]. Tester B3 x B5 tumed out to be the best line discriminator according to the following criteria: grain yield, percentage of ears damaged by Fusarium spp., and number of rotten ears.

scholarly journals Performance of soybean grown in succession to black oat and wheat

2020 ◽  
Vol 55 ◽  
Author(s):  
Alvadi Antonio Balbinot Junior ◽  
Julio Cezar Franchini dos Santos ◽  
Henrique Debiasi ◽  
Antônio Eduardo Coelho ◽  
Moryb Jorge Lima da Costa Sapucay ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Dry Matter ◽  
Plant Density ◽  
Block Design ◽  
Agronomic Performance ◽  
Plant Analysis ◽  
Area Index ◽  
Randomized Complete Block Design ◽  
The Impact

Abstract: The objective of this work was to evaluate the influence of isolated or combined roots and straw of black oat and wheat, as previous crops in autumn/winter, on the performance of soybean in succession. The experiment was carried out in the 2017/2018 and 2018/2019 crop seasons in a randomized complete block design, with four replicates. The following seven treatments were applied in the autumn/winter of 2017 and 2018, before soybean planting: fallow; straw of black oat or wheat, distributed on plots kept under fallow during autumn/winter, without roots; plots only with roots of black oat or wheat, without straw; and plots with straw and roots of black oat or wheat. Soybean crop performance was estimated using the following variables: plant density, leaf area index, soil plant analysis development (SPAD) index, shoot dry matter, grain yield, and yield components. In comparison with fallow, the cultivation of black oat or wheat, as previous crops during the autumn/winter, increases soybean grain yield. The impact of the roots of black oat or wheat on soybean yield is similar to that of straw. Soybean agronomic performance is improved in the combined presence of roots and straw of black oat or wheat.

scholarly journals Upland rice agronomic performance in response to different doses and sources of nitrogen

2020 ◽  
Vol 16 (2) ◽  
pp. 96-100
Author(s):  
Tácio Peres da Silva ◽  
Douglas Goulart Castro ◽  
Laís Moretti Tomé ◽  
Marco Renan Félix ◽  
Antônio Rosário Neto ◽  
...  
Keyword(s):  
Experimental Design ◽  
Grain Yield ◽  
Nitrogen Fertilization ◽  
Upland Rice ◽  
Block Design ◽  
Agronomic Performance ◽  
Nitrogen Application ◽  
Randomized Complete Block Design ◽  
The University ◽  
Different Doses

The aim of the present study was to evaluate the response of different doses and sources of nitrogen (N) on agronomic characteristics in upland riceas well astheclimaticand environmentalinfluence on nitrogen fertilization results. Theexperiments were conducted in the University of Lavras, during 2015/2016 and 2016/2017 crop seasons, the plots consisted of 4 lines of 3 linear meters, with spacing among rows of 35 cm and a useful plot of 4.2 m2. The experimental design was a randomized complete block design with three replications in a 4x4x 2factorial design. The factor doseconsisted in 0, 50,100 e 200 kg ha-1N and the factor sourcesconsisted in ammonium nitrate, ammonium sulphate, urea and polycote, totaling 16 treatments. The characteristics evaluatedwere plant height, grain yield, grain chalkness, 1000 grainsweight andyield. It was concluded that the addiction of doses and Nsources didnot change the agronomic performanceof the upland rice crop. There is an influence of the environment on the responses of plants to nitrogen application, being observed different results in different cropseasons.

scholarly journals Generation mean analysis for grain yield and its components in popcorn

2018 ◽  
Vol 3 (1) ◽  
pp. 451-458
Author(s):  
Shah Fahad ◽  
Shah Fahad ◽  
Muhammad Noor ◽  
Durri Shahwar ◽  
Mukhtar Alam ◽  
...  
Keyword(s):  
Grain Yield ◽  
Gene Action ◽  
Block Design ◽  
Dominant Gene ◽  
Genetic Effects ◽  
Maize Breeding ◽  
Breeding Programs ◽  
Randomized Complete Block Design ◽  
Hybrid Maize ◽  
Additive Genetic Effects

AbstractKnowledge about genetic composition of a character helps plant breeders to plan their breeding programs. Grain yield and related traits are very important in maize breeding programs. In our experiment four each of parents, F1s, F2s, BC1s and BC2s were evaluated at Cereal Crops Research Institute (CCRI), Pirsabak, Nowshehra and Agriculture University Peshawar. The experimental material at both locations were replicated thrice in randomized complete block design. In all crosses dominance gene action was found to be important in the inheritance of ear diameter, ear length, percent shelling and grain yield. Additive genetic effects were found negative and non-significant in all four crosses for percent shelling. Duplicate type of non-allelic interactions was observed for shelling percentage in all crosses. Duplicate type of epistasis was observed in cross, PS-1 × BD-1 and PS-2 × BD-1 for ear length. For grain yield both complementary and duplicate type of epistasis were observed. Additive genetic effects werefound significant with positive and negative magnitude in two crosses each. It is concluded that crosses, where dominant gene action was found predominant, should be effectively utilized in hybrid maize programs for improved grain yield and related traits.

scholarly journals PENDUGAAN KERAGAMAN GENETIK DAN HERITABILITAS JAGUNG HIBRIDA SILANG PUNCAK PADA PERLAKUAN CEKAMAN KEKERINGAN

2015 ◽  
Vol 24 (1) ◽  
pp. 91 ◽  
Author(s):  
Adriani A
Keyword(s):  
Grain Yield ◽  
Genetic Variance ◽  
Block Design ◽  
Agronomic Performance ◽  
Selection Intensity ◽  
Maize Varieties ◽  
Randomized Complete Block Design ◽  
Hybrid Maize ◽  
1000 Grain Weight ◽  
Location Interaction

Development of maize varieties tolerant to drought is very important to extensification program in dry maginal lands, especially outside Java. The research objective was to evaluate the agronomic performance, genetic variabilities and heritabilities of hybrid maize top crosses at Probolinggo and Gowa during dry season. A randomized complete block design with two replications was applied to each location. The combined analysis of variance showed that hybrid x location interaction was significant for harvesting date, corncob length, 1000 grain weight, and highly significant for flowering date, leaf curling, husk cover aspect, corncob aspect, plant harvested, weight of corncob harvested and grain yield. The genetic variance was considered broad for grain yield, weight of corncob harvested, shalling percentage, number of grain rows per corncob, and corncob aspect. Heritability values in combined location analysis were high for shalling percentage; medium for grain yield, weight of corncob harvested, shalling number of grain rows per corncob and corncob aspect; but for the other characteristics they were low. Low selection intensity (≥ 10%) can be applied in this generation (S2), but strong selection intensity (≥20%) can be applied in the next generation (≥S3).

scholarly journals Desempenho de cultivar de soja de crescimento determinado em diferentes arranjos espaciais

2020 ◽  
Vol 16 (5) ◽  
pp. 47-56
Author(s):  
Paula Daiane de Sena Martins ◽  
Eduardo Lima do Carmo ◽  
Alessandro Guerra da Silva ◽  
Sérgio de Oliveira Procópio ◽  
Gustavo André Simon ◽  
...  
Keyword(s):  
Grain Yield ◽  
Morphological Changes ◽  
Block Design ◽  
Spatial Arrangement ◽  
Climatic Conditions ◽  
Plant Population ◽  
Agronomic Performance ◽  
Plant Populations ◽  
Soybean Crop ◽  
Randomized Complete Block Design

The adoption of different plant arrangements in the soybean crop can promote morphological changes in the plants, which may influencethe grain yield. In this context, the spatial arrangement allied to a determined growth and higher cycle variety may be an alternative for the management of the soybean crop under adverse edaphic-climatic conditions. In this way, the objective of this work was to evaluate the agronomic performance and the productive components of the BRS Valiosa RR®soybean cultivar, with determinedgrowthin different plant populations and between rows. The trial was installed in Rio Verde/GOat2012/13 agricultural year. A randomized complete block design was used in a factorial arrangement4x4with four replications. It was evaluated four spacing between rows(20; 40; 20/40 and 20/60 cm) associated with four plant populations (200,000, 300,000, 400,000 and 500,000 ha-1plants). The BRS Valiosa RR® cultivar showed potential to reduce the plant population without causing reductions in grain yield, regardless of the spacing between rows.

scholarly journals Genotype X Environment Interaction of Food Barley

2015 ◽  
Vol 21 ◽  
pp. 41-48
Author(s):  
Gebremedhin Welu
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Genotype X Environment Interaction ◽  
Environment Interaction ◽  
Genotype X Environment ◽  
Genotype Effect ◽  
Environment Effects ◽  
Randomized Complete Block Design ◽  
Barley Genotypes

The objective of this experiment was to estimate the magnitude of genotype X environment interaction on grain yield and yield related traits. Twelve varieties of food barley were included in the study planted in randomized complete block design with three replications. The ANOVA of combined and individual location revealed significant differences among the food barley genotypes for grain yield and other traits. The results of ANOVA for grain yield showed highly significant (p≤0.01) differences among genotypes evaluated for grain yield at Maychew and significant (p≤0.05) differences in Korem, Alage and Mugulat. The ANOVA over locations showed a highly significant (p≤0.01) variation for the genotype effect, environment effects, genotype X environment interaction (GEI) effect and significant (p≤0.05) variation for GEI effect of yield and for most of the yield related traits of food barley genotypes. Haftysene, Yidogit, Estayish and Basso were the genotypes with relatively high mean grain yield across all locations and they are highly performing genotypes to the area. Among locations, the highest mean grain yield was recorded at Korem and it was a suited environment to all the genotypes whereas Mugulat is unfavoured one. ECOPRINT 21: 41-48, 2014DOI: http://dx.doi.org/10.3126/eco.v21i0.11903

scholarly journals Hill drop sowing of soybean with different number of plants per hole

2018 ◽  
Vol 48 (5) ◽  
Author(s):  
Esmael Lopes dos Santos ◽  
Victor José Agassi ◽  
Alessandro Sartor Chicowski ◽  
Julio Cezar Franchini ◽  
Henrique Debiasi ◽  
...  
Keyword(s):  
Plant Density ◽  
Block Design ◽  
Agronomic Performance ◽  
Soybean Cultivars ◽  
Lack Of Information ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
Cropping Seasons

ABSTRACT: In the last few cropping seasons, some soybean producers have tested the application of a hill drop sowing method, usually from three to four seeds every 30 to 40cm. However, there is a lack of information in the literature about the effect of this practice on soybean performance. Thus, the objective of this study was to evaluate the effect of a hill drop sowing with different number of plants per hole on soybean performance. The study was conducted in Londrina - PR, Brazil, during the 2013/14, 2014/15 and 2016/17 cropping seasons. The experiment was a randomized complete block design with four replications and a 2x5 factorial scheme. The first factor consisted of two soybean cultivars, BRS 359RR and NK 7059RR analyzed in the first two cropping seasons and BRS 359RR and BRS 1010IPRO in the last cropping season. The second factor was constituted by five in-hill hole-spacing treatments (HS) (8, 16, 24, 32 and 40cm), with rows spaced 50cm apart. To maintain the same plant density in all treatments (270,000 plants ha-1), sowing was performed manually, being then thinned out. After thinning, the distribution was one plant per hole at HS8, 2 plants at HS16, 3 plants at HS24, 4 plants at HS32, and 5 plants at HS40. The agronomic performance of soybean in hill drop sowing with different number of plants per hole is similar to that of an equidistant distribution of plants.

scholarly journals Green ear yield and grain yield of maize cultivars in competition with weeds

2010 ◽  
Vol 28 (1) ◽  
pp. 77-85 ◽  
Author(s):  
P.S.L. Silva ◽  
K.M.B. Silva ◽  
P.I.B. Silva ◽  
V.R. Oliveira ◽  
J.L.B. Ferreira
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Block Design ◽  
Corn Yield ◽  
Modern Agriculture ◽  
Maize Cultivars ◽  
Randomized Complete Block Design ◽  
Ear Height ◽  
Herbicide Use ◽  
Ground Part

The reduction in herbicide use is one of the greatest interests for modern agriculture and several alternatives are being investigated with this objective, including the adoption of cultivars that suppress weeds. The objective of this study was to verify if maize cultivars develop differently, in competition with weeds, to produce green ears and grain. Randomized complete block design was used, with split-plots and five replications. Cultivars DKB 390, DKB 466, DKB 350, AG 7000, AG 7575 and Master, were evaluated in the plots, without weeding and two weedings (at 22 and 41 days after sowing) in sub plots. Twenty-one species were identified in the experimental area, the most frequent being Gramineae (Poaceae), Euphorbiaceae, Leguminosae (Fabaceae) and Convolvulaceae species. There was no difference in the dry biomass above-ground part of the weeds in the plots of the evaluated cultivars. The cultivars behaved similarly in treatments with or without hoeing, except for plant height and ear height evaluations. Without hoeing, plant height increased in cultivar DKB 390, while plant height and ear height decreased in cultivar AG 7575. In the other cultivars, these traits did not change under weed control. The presence of weeds decreased the values of all traits employed to assess green corn yield, with the exception of the total number of green ears and grain yield.

scholarly journals Residual effects of superficial liming on tropical soil under no-tillage system

2016 ◽  
Vol 51 (9) ◽  
pp. 1633-1642 ◽  
Author(s):  
Claudio Hideo Martins da Costa ◽  
Carlos Alexandre Costa Crusciol ◽  
Jayme Ferrari Neto ◽  
Gustavo Spadotti Amaral Castro
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Block Design ◽  
Residual Effects ◽  
Available Phosphorus ◽  
Long Term Effects ◽  
Matter Production ◽  
Randomized Complete Block Design ◽  
Tillage System

Abstract The objective of this work was to evaluate the long-term effects of the surface application of lime on soil fertility and on the mineral nutrition and grain yield of soybean, and of black oat and sorghum in crop succession. The experiment was carried out on a clayey Oxisol, in a randomized complete block design, with four replicates. Treatments consisted of lime the rates of 0, 1,000, 2,000, and 4,000 kg ha-1, applied in October 2002 and November 2004. Soil samples were collected at five soil layers, down to 0.60-m depth. Surface liming was effective in reducing soil acidity and increasing Ca2+ and Mg2+ contents in the subsurface. Moreover, it increased available phosphorus contents and soil organic matter in the long term (48 to 60 months after the last lime application). Surface liming improved plant nutrition, mainly for N, Ca, and Mg, and increased dry matter production and grain yield of the crops, even in years with regular distribution of rainfall. The greatest productivities of soybean, black oat, and sorghum were obtained with the respective estimated lime doses of 4,000, 2,333, and 3,281 kg ha-1, for shoot dry matter, and of 2,550, 3,555, and over 4,000 kg ha-1, for grain yield.

scholarly journals Evaluation of Urea Super Granule as a Source of Nitrogen in Transplant Aman Rice

2014 ◽  
Vol 24 (1-2) ◽  
pp. 29-37 ◽  
Author(s):  
TA Qurashi ◽  
MA Salam ◽  
M Jannat ◽  
MG Rabbani
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Block Design ◽  
Prilled Urea ◽  
Randomized Complete Block Design ◽  
Yield And Yield Components ◽  
Use Efficiency ◽  
Experimental Treatments ◽  
N Management ◽  
1000 Grain Weight

An experiment was carried out at Bangladesh Agricultural University, Mymensingh to evaluate the effect of urea super granule (USG) as a source of nitrogen on the yield and yield components of transplant Aman rice cv. BRRI dhan39, BRRI dhan46 and BINA dhan7. Five levels of N (viz., 0, 60, 120 kg ha-1 as prilled urea and 60 and 120 kg ha-1 as USG) were taken as experimental treatments. The experiment was laid out in a randomized complete block design with three replications. Plant height, effective tillers hill-1, grains panicle-1 and grain yield varied significantly due to different cultivars. All the yield and yield components except 1000-grain weight were influenced significantly by the levels of nitrogen fertilizer. The highest grain yield (4.82 t ha-1) was recorded in BINA dhan7 and the lowest one (4.30 t ha-1) was recorded in BRRI dhan39. Nitrogen @ 120 kg ha-1 as USG performed the best among the treatments in respect of yield and yield components of rice. The highest grain yield (5.46t ha-1) was obtained from BINA dhan7 with 120 kg N ha-1 as USG which was statistically identical with 60 kg N ha-1 as USG. A considerable amount (31.25%) of prilled urea (PU) nitrogen could be saved by using USG. It may be concluded that USG could be used as N management to achieve better nitrogen use efficiency in reducing N loss than the PU.DOI: http://dx.doi.org/10.3329/pa.v24i1-2.19095 Progress. Agric. 24(1&2): 29 - 37, 2013

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