scholarly journals Correlations and path analysis in agronomic traits of soybeans under defoliation

2020 ◽  
Vol 36 (5) ◽  
Author(s):  
Alan Mario Zuffo ◽  
Francisco de Alcântara Neto ◽  
Tiago Zoz ◽  
Rafael Felippe Ratke ◽  
Jorge González Aguilera ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Agronomic Traits ◽  
Block Design ◽  
Indirect Selection ◽  
Additional Treatment ◽  
Leaf Damage ◽  
Thousand Grain Weight ◽  
Randomized Block Design ◽  
Selection For

 Stress events or leaf damage can alter the redistribution of photoassimilates and modify the morphological traits directly related to grain yield. This study aimed to evaluate the influence of agronomic traits on grain yield in soybean crop in function of leaf defoliation. The experiment consisted of a randomized block design with three replications, arranged in a 6 x 3 + 1 factorial scheme. The factors were composed by six reprodutive stages (R1, R2, R3, R4, R5, and R6) and three defoliation levels (33%, 66%, and 99%), and one additional treatment without defoliation (control). The following traits were evaluated: plant height, number of pods per plant, number of grains per pod, thousand grain weight, and grain yield. The magnitudes of the correlations between the same traits showed high oscillation according to the defoliation level. Results revealed the potential for the indirect selection for grain yield by the traits plant height and number of grains per pods under 0% of defoliation and by the trait number of pods per plant under 33% of defoliation.

scholarly journals Genetic progress of phenotypic recurrent selection in popcorn

2012 ◽  
Vol 36 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Hugo Junqueira Ematné ◽  
João Cândido de Souza ◽  
Gustavo Barnabé Biudes ◽  
José Airton Rodrigues Nunes ◽  
Fernando Lisboa Guedes
Keyword(s):  
Grain Yield ◽  
Recurrent Selection ◽  
Agronomic Traits ◽  
Block Design ◽  
Viable Alternative ◽  
Genetic Progress ◽  
Original Population ◽  
Phenotypic Recurrent Selection ◽  
Randomized Block Design ◽  
Selection For

Popcorn is widely consumed in the south of Minas Gerais; however, up to now no specific breeding program for the region has been carried out. Recurrent selection (RS) is a viable alternative for breeding of this crop; nevertheless, it is necessary to frequently evaluate the progress achieved. Consequently, the purpose of this work was to assess the genetic progress obtained after two cycles of RS for the traits of popping expansion (PE) and grain yield (GY). Cycles one and two of the UFLA - E and UFLA - R populations, the original population (UFLA) and two controls were assessed. The experiment was conducted at the UFLA experimental farm in a randomized block design with eleven replications; ten agronomic traits, including PE and GY, were assessed. Gains from selection for the traits studied were observed, as well as that the type of kernel had an influence on the response for genetic progress for the PE trait and that the populations assessed exhibited potential for future selection cycles.

scholarly journals Performance of soy cultivars in the south of Minas Gerais State, Brazil

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Elaine Cristina Batista ◽  
José Luiz De Andrade Rezende Pereira ◽  
Adriano Teodoro Bruzi ◽  
Everton Vinucius Zambiazzi ◽  
Karina Barroso Silva
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Environmental Variables ◽  
Block Design ◽  
Minas Gerais ◽  
Climatic Conditions ◽  
The South ◽  
Randomized Block Design ◽  
Minas Gerais State

Cultivar evaluation is one of the basic steps recommended for a given region, since the best adapted cultivars have higher yields, and success in this parameter is based on the genotype of the material and its interaction with the environmental variables. The aim of this study was to evaluate thebehavior of 23 soy cultivars in the soil-climatic conditions of the south region of Minas Gerais State (MG), Brazil, in the municipality of Inconfidentes. The evaluated traits were grain yield, plant height, height of insertion of the first legume and lodging. The experiments were conducted on the 2013/2014 and 2014/2015 harvests, adopting a randomized block design with three replicates and 23 treatments, which were constituted by the following cultivars: FAVORITA RR, BRS MG 760SRR, NA 5909 RG, NA 7200 RR, CD 2630, CD 250, NA 7620 RR, CD 2737, TMG 123, V-MAX RR, P 98Y11 RR, NS 7100 RR, BMX Potencia, Anta 82 RR, CD 237, V-TOP, TMG 1176 RR, TMG 1174 RR, TMG 1179 RR, TMG 1181 RR, BMX Força, Monsoy 7211 RR and BRS MG 780 RR. Of the studied cultivars, those that most stood out for the traits evaluated in the conditions of Inconfidentes (MG) were TMG 1179 RR (48.6 bags of 60 kg ha-1), NA 7200 RR (45.6 bags), CD 2737 (41.1 bags), CD 237 (41 bags) and BRS MG 760 SRR (40.6 bags), all of which displayed satisfactory conditions for mechanical harvesting, demonstrating the good performance of the crop in the south region of Minas Gerais State.

scholarly journals Planting Density and Soybean (Glycine max L.) Cultivars Effects on Yield Components in the Amazon

2020 ◽  
Vol 8 (3) ◽  
pp. 63
Author(s):  
Priscila Pereira Sacramento ◽  
Letícia Cunha da Hungria ◽  
Jamil Chaar El-Husny ◽  
Luis De Souza Freitas
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Block Design ◽  
Planting Density ◽  
Maximum Height ◽  
Soybean Cultivars ◽  
Linear Behavior ◽  
Randomized Block Design ◽  
Glycine Max L

The aim of this study was to evaluate the influence of planting density and cultivar of soybean on yield components in the southeast Amazon. The experiment was carried out in an Oxisol, with a randomized block design in a 2 x 4 factorial scheme. The treatments were two soybean cultivars (BRS 9090 RR and BRS 8990 RR) and four planting densities (13, 15, 18 and 20 plants m-1), with three replications. First pod insertion height (IFP), plant height (H), number of pods per plant (NPP), grain yield (Y) and weight of 100 grains (W100) were evaluated. The insertion height of the first pod showed a tendency of increase with the increment of plants per linear meter for cultivar BRS 8990 RR, different of the behavior observed for the cultivar BRS 9090 RR, which only showed difference when the density of 300.000 plants ha-1 was tested. For plant height, among soybean cultivars, there was only difference in D400, with BRS 8990 RR showing a maximum height of 83.3 cm, 21% higher than BRS 9090 RR. When evaluated under D350, BRS 8990 RR showed an increase of 13% in the number of pods compared to BRS 9090 RR. Both cultivars showed linear behavior for the grain yield, increasing according the plant population, with the highest grain yield obtained under the density of 400.000 plants ha-1 (4527.3 kg ha-1). The weight of 100 grains was not influenced by any variation factor.

scholarly journals Action of auxin inhibitors on growth and grain yield of soybean

Revista CERES ◽  
2013 ◽  
Vol 60 (5) ◽  
pp. 621-628 ◽  
Author(s):  
Gederson Luiz Buzzello ◽  
Michelangelo Muzell Trezzi ◽  
José Abramo Marchese ◽  
Elouize Xavier ◽  
Edemir Miotto Junior ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Negative Correlation ◽  
Block Design ◽  
Sowing Date ◽  
Growth And Yield ◽  
Fertility Level ◽  
Randomized Block Design ◽  
Soybean Genotypes ◽  
Soybean Plants

Soybean genotypes grown in sub-tropical climate may exhibit lodging. The plant lodging is influenced by soil type and fertility level, sowing date, latitude and altitude of the location, plant population and conditions of crop development. Plant regulators and herbicides are able to avoid or reduce plant lodging. This study aimed to verify the effects of the growth regulators TIBA and daminozide on vegetative growth and yield of soybean cultivar CD 214 RR. The experiment was carried out at a field in randomized block design with four replications in a factorial scheme. The A factor was represented by the combination of regulators TIBA and daminozide and its concentrations, and the Factor B was seven times of evaluation of injury and plant height or eight times of evaluation of lodging. In the range of doses used, the application of daminozide resulted in greater injury to soybean plants than TIBA. The smaller plant height was achieved by the application of 6 g ha-1 of TIBA and 1200 g ha-¹ of daminozide. Treatments with daminozide (100 g ha-¹) and TIBA (10 g ha-1) stood out due to the reduced lodging of soybean plants. Grain weight increased linearly when the levels of TIBA increased. There was a negative correlation between lodging and grain yield and a positive correlation between plant height and lodging. There was also a negative correlation between injury caused by the application of plant regulators and lodging.

scholarly journals APPLICATION OF DIFFERENT SOURCES AND DOSES OF BORON IN THE CORN CROP

2020 ◽  
Vol 7 (4) ◽  
pp. 23-28
Author(s):  
Angela Oliveira Silva ◽  
Wilian Henrique Diniz Buso
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Block Design ◽  
Grain Weight ◽  
Stem Diameter ◽  
Nutrient Sources ◽  
Randomized Block Design ◽  
The One ◽  
Different Sources ◽  
1000 Grain Weight

One of the main problems faced in corn cultivation, especially in Cerrado regions, is the deficiency of micronutrients. Among the micronutrients essential for the development of plants, boron (B) stands out for participating in a series of physiological processes. Based on this, the present work aimed to evaluate the performance of corn under fertilization with different sources and doses of boron. The randomized block design in a 4x3 factorial scheme was used. Four boron doses (0, 1, 2, and 3 kg ha-1) and three nutrient sources (boric acid, borax, and ulexite), applied in topdressing, were evaluated. Plant height (cm), stem diameter (mm), first ear insertion height (m), ear length (cm), ear diameter (mm), number of rows per ear, number of grains per row, 1000-grain weight (g), and grain yield (kg ha-1) were evaluated. It was concluded that the boron sources and doses used did not influence the results of plant height, first ear insertion height, number of rows per ear, and grain yield. The three doses evaluated provided increases in stem diameter, with a dose of 2.08 kg ha-1 being the one with the highest average. The application of borax and ulexite results in higher values of ear diameter, number of grains per row, and 1000-grain weight. The dose of 1.74 kg ha-1 of boron provides the highest 1000-grain weight.

scholarly journals FLOWERING SYNDROME – HYBRID PERFORMANCE RELATIONSHIP IN MAIZE 1- Field traits and growth rates

2016 ◽  
Vol 47 (4) ◽  
Author(s):  
Al- Khazaali & et al.
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Growth Traits ◽  
Block Design ◽  
Inbred Lines ◽  
High Yield ◽  
Late Flowering ◽  
Randomized Block Design ◽  
Four Seasons ◽  
Selection For

In order to identify the role of selection for early and late silking on the inbred lines from Maize (Zea Mays L.) regarding the grain yield of the consequent hybrids. Filed experiment for four seasons (spring and full 2014 and 2015) was conducted in the experimental field of Field Crop Dept., Coll. of Agric., Univ. of Baghdad. Four inbred lines (Zm19, Zm32, Zm51 and Zm61) and two testers (Zm21 late and Zm60 early silking) were used. In the first two seasons, the seeds of the four inbred lines were planted, first 10 plants that flowered early and 10 plants that flowered late were selected and the seeds of the selected plants were multiplied. The seeds of the early and late selected inbred lines were planted in the third season and crossed with testers. Crosses from the early and late flowering were produced and their seeds were cultivated in the last season. Comparison in some field and growth traits were conducted among the crosses. The experiments laid out in completely randomized block design (RCBD) at three replicates. Selection for early and late flowering parents has induced significant differences in days to flowering for all crosses and ranged between 62 days for early parents and 66 days for late parents. Also, significant differences were shown in several traits, the most prominent were crop’s and seed’s growth rate (CGR and SGR ), that correlated with seed filling duration (SFD), which contributed to increase the deposition of the dry matter into the grain for a longer period, which gave a high grain yield (GY). CGR of outstanding crosses ranged from 3.18 to 6.21 g.m-2.day, SGR ranged between 2.3 to 7.3 g. m-2.day, and the SFD between 35-38 days. In parallel, the testers (Zm21 late and Zm60 early silking) have significantly differed in their effect on the traits of some derived crosses, where the results showed significant superiority of the crosses Zm32Zm60 resulted from crossing the tester Zm60 with early silking parents selected from inbred line Zm32 on the crosses Zm32Zm21 resulted from crossing the tester Zm21 with the same parents of Zm32 in the traits of Total Dry Matter (TDM) (1.85 kg.m-2), CGR (18.28 g.m-2.day), Harvest Index (HI) (0.56), and SGR (3.3 g.m-2.day). It can be conclude  that selection for early and late silking inbred lines, as well as the effect of the early and late silking tester have a great importance in deriving hybrids of a high yield and distinct in several traits, which are all significantly contributing in increasing the GY.

scholarly journals Performance of white oat cultivars in response to nitrogen fertilization and trinexapac-ethyl

2019 ◽  
Vol 40 (5Supl1) ◽  
pp. 2121
Author(s):  
José Henrique Bizzarri Bazzo ◽  
Carlos Roberto Riede ◽  
Klever Márcio Antunes Arruda ◽  
Carolina Pereira Cardoso ◽  
Isabela Franzoni ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Growth Regulator ◽  
Unit Area ◽  
Block Design ◽  
N Fertilization ◽  
Growth Retardant ◽  
Growth Environment ◽  
Randomized Block Design ◽  
Oat Cultivars

The application of N at the appropriate time and dose can increase oat crop efficiency by increasing grain yield through changes in production components. High doses of N, depending on the genotype and the environment, can result in plant lodging, which can be addressed with the use of growth retardants. The aim of this study was to evaluate the yield components, lodging, and productivity of white oat cultivars cultivated at two planting locations under different N levels with trinexapac-ethyl growth retardant. Two assays (with and without the application of the growth retardant agent) were used in the experiments, which were set up in the region of Londrina and Mauá da Serra, Parana State, Brazil, in a randomized block design with split plots and four replications. The plots consisted of four white oat cultivars (IPR Afrodite, IPR Artemis, URS Corona, and URS Guria) and the subplots of four doses of N (0, 30, 60, and 90 kg ha-1). Plant height, number of panicles per unit area, number of grains per panicle, thousand grain weight, lodging of plants, and grain yield were evaluated. For the conditions under which the experiments were conducted, the growth regulator decreased plant height and lodging. Furthermore, the growth regulator in combination with N topdressing increased the number of panicles per unit area. Thus, the increase in grain yield with the application of a growth retardant was dependent on the characteristics of the plant growth environment. The response of genotypes to N fertilization was also dependent on the soil and climatic characteristics of the environment.

Keragaman Agronomi Tanaman Padi (Oryza sativa L.) Varietas Pandan Putri pada Beberapa Sistem Tanam di Kecamatan Mundak Jaya Kabupaten Indramayu

2018 ◽  
Vol 1 (2) ◽  
pp. 1-7
Author(s):  
Yudhi Mahmud
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Plant Height ◽  
Oryza Sativa L ◽  
Block Design ◽  
Cropping System ◽  
Growth And Yield ◽  
Randomized Block Design

This reserach aims was to determine the effect of planting systems on the growth and yield of Pandan Putri  plants in several planting systems in Mundak Jaya Subdistrict, Indramayu Regency. The experiment used a randomized block design with four treatments, each treatment was six replication. The results showed that the treatment of legowo 2: 1 cropping system gave the highest effect for plant height per clump, number of tillers per clump, number of panicles per clump and dry milled grain yield per hectare and legowo 2: 1 cropping system gave the highest yield of dry unhulled rice, which is 5.19 tons / ha and was significantly different from other treatments

scholarly journals Yield and popping expansion components in local popcorn varieties from Southern Brazil

2019 ◽  
Vol 68 (3) ◽  
pp. 213-221
Author(s):  
Gabriel Moreno Bernardo Gonçalves ◽  
Luana Burg Mayer ◽  
Rosenilda De Souza ◽  
Juliana Bernardi Ogliari
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Block Design ◽  
Breeding Strategy ◽  
Width Ratio ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Positive Correlation ◽  
Randomized Block Design ◽  
Circularity Index

The aim of this study was to evaluate grain yield (GY), popping expansion (PE), popping expansion disregarding the weight of unpopped kernels (PEW), and eleven other agronomic and morphological traits of 14 local popcorn varieties (LPV) from far west of the state of Santa Catarina, Southern Brazil. Two experiments were carried out, in a completely randomized block design with three replications, in different regions of Santa Catarina: one in the municipality of Florianópolis (east coast) and the other in Anchieta (western). Grain yield had the highest positive correlation with prolificacy (PRL) (r = 0.72) and number of grains per row (NGR) (r = 0.71), and a negative correlation with caryopsis circularity index (CCI) (r = −0.67). Variable PEW showed a positive correlation with CCI (r = 0.70) and with thickness/width ratio (TWR) (r = 0.70). Variety 574A stood out for high PE and PRL. The improvement of composite populations and of populations per se is a potential breeding strategy for LPV, based on the complementarity and correlation among variables and the GY, PE, and PEW values, CCI – HEP – first ear height/plant height relation, PH – plant height; PRL – WHG – weight of 100 grains; VHG - volume of 100 grains; EL – ear length; NRE – number of rows per ear; NGR – number of grains per row of ear; ED – ear diameter.

scholarly journals Sorgo en doble hilera versus surco sencillo en el noreste de México.

2016 ◽  
Vol 5 ◽  
pp. 104
Author(s):  
Raúl Rodríguez ◽  
Heriberto Torres ◽  
Héctor Williams ◽  
Noé Montes
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Plant Height ◽  
Block Design ◽  
The Other ◽  
Plant Mortality ◽  
Grain Number ◽  
Double Row ◽  
Single Row ◽  
Randomized Block Design

An experiment was conducted to compare the traditional sorghum sowing method (single row) with double row method in the spring of 1992 under irrigation conditions in Rio Bravo, Tamaulipas, Mexico. A Complete Randomized Block design with a 2 x 5 factorial distribution was used with six replications; where the factors were: sowing method (doble and single row) and population density (187, 256, 342, 375 and 435 thousand plants/hectare). The hybrid Pioneer 8244 was used and planted at 0.80 m between rows. The parameters evaluated were plant height, panicle excertion, panic1e lenght and weight, grain number and moisture, weight of a thousand grains, grain yield and plant mortality. Mean separations were run using the Duncan's test. The grain yield and number per panicle were higher in double row method than in single row by 7.5 and 18.9 %, respectively; while grain weight and plant height showed higher values in single row than doble row. On the other hand, the weight and panic1e length decreased when population density increased in both methods, while panic1e excertion and plant mortality increased.

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