scholarly journals Biometric and biochemical peculiarities of new M.×giganteus lines with increased ploidy level

2019 ◽  
Vol 25 ◽  
pp. 281-286
Author(s):  
O. V. Melnychuk ◽  
S. P. Ozheredov ◽  
D. B. Rakhmetov ◽  
S. O. Rakhmetova ◽  
O. О. Bayer ◽  
...  
Keyword(s):  
Plant Height ◽  
Ploidy Level ◽  
Biochemical Parameters ◽  
Dry Mass ◽  
Ash Content ◽  
Biochemical Traits ◽  
Total Sugars ◽  
Energy Value ◽  
Miscanthus Giganteus ◽  
Number Of Leaves

Aim. The aim of the work was to study biometricl and biochemical traits of new M. × giganteus lines obtained from polyploidization with the use of new antimitotic compounds of dinitroanilines class. Methods. The study has been conducted based on biological and biochemical parameters such as: plant height, number of rhizomes, number of leaves per stalk, ratio of leaves to stems, vegetative mass, dry mass and ash content; total sugars and monosugars content; energy value of biomass. Results. It has been established that all studied lines significantly differed for all biological and biochemical parameters. The best results for majority of parameters has been observed in lines 108 and 202, and namely, vegetative mass of plants, plant height, number of rhizomes and number of leaves per stalk. Conclusions. Some lines of M.×giganteus with increased ploidy level appeared to be significantly superior to triploid forms in most biometric and biochemical parameters and require further study. Keywords: dinitroanilines, polyploids, Miscanthus × giganteus, biofuel.

scholarly journals Effects of plant growth regulators in heliconia ‘Red Opal’

2016 ◽  
Vol 22 (3) ◽  
pp. 301
Author(s):  
Ana Cecilia Ribeiro de Castro ◽  
Fernando José Hawerroth ◽  
Carlos Alberto Kenji Taniguchi ◽  
Tiago Freitas Silva ◽  
Nazaré Suziane Soares
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Block Design ◽  
Dry Mass ◽  
Potted Plants ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
One Year

The objective of this study was to evaluate growth regulators with purpose of reducing the size of heliconia ‘Red Opal’ potted plants. The experiment was carried out in randomized block design with five treatments (trinexapac-ethyl and paclobutrazol at rates of 37.5 and 75.0 mg of active ingredient per pot and control without growth regulator) and five replicates. The treatments were applied 40 days after planting the rhizomes in pots filled with soil. Thirty and 150 days after the growth regulator application, plant height, number of leaves and shoots, petioles length and leaf area were evaluated. One year after planting the rhizomes in pots the number of inflorescence and leaves (leaves, sheathing leaf bases and inflorescences) and rhizomes (rhizomes and roots) dry mass were determined. Trinexapac-ethyl had no differences compared to the control in any of the variables evaluated. Paclobutrazol proved effective in reducing plant height, leaf area and petiole length and increase in number of leaves and shoots but the effect was temporary. Also, it did not affect the inflorescences production and leaves and rhizomes dry mass. Paclobutrazol is efficient to promote height reduction and to increase the number of shoots in heliconia ‘Red Opal’ potted plants without affect the inflorescence formation but its effects is temporary.

scholarly journals Initial growth of zucchini irrigated with saline water in soil with biofertilizers

2021 ◽  
Vol 15 ◽  
Author(s):  
Juvenaldo Florentino Canjá ◽  
Josimar De Azevedo ◽  
Geocleber Gomes de Sousa ◽  
Clarissa Lima Magalhães ◽  
Thales Vinícius De Araújo Viana
Keyword(s):  
Salt Stress ◽  
Plant Height ◽  
Irrigation Water ◽  
Aerial Part ◽  
Plant Biomass ◽  
Block Design ◽  
Dry Mass ◽  
Stem Diameter ◽  
Initial Growth ◽  
Number Of Leaves

Zucchini culture is slightly sensitive to salinity and is among the ten vegetables of highest economic value, with characteristics of precocity and easy cultivation. These characteristics are some of the reasons for the expansion of its cultivation among small producers. Thus, the objective was to evaluate the effect of different levels of salinity in the irrigation water and biofertilizer types on the initial growth of the zucchini (Cucurbita pepo L.) culture. The experiment was carried out in the full sunlight in a randomized block design, in a 5x2 factorial arrangement. The treatments consisted of a combination of five types of biofertilizers (quail, sheep, mixed, bovine, and crab) and two salinity levels of the irrigation water (0.8 and 2.5 dS m-1), with five replicates. At 30 days after transplanting, the following variables were evaluated: electrical conductivity of the substrate, plant height, number of leaves, roots length, stem diameter, leaf area, chlorophyll content, dry mass of the aerial part, root dry mass, and total dry mass. Salt stress negatively interferes with the accumulation of zucchini plant biomass. Quail, bovine, and sheep biofertilizers are more efficient about plant height, number of leaves, and stem diameter. The sheep biofertilizer attenuates the salt stress for the dry mass of the aerial part, the root, and the total dry mass.

scholarly journals Cultivo da cenoura submetida à aplicação de doses de biofertilizante

2017 ◽  
Vol 12 (1) ◽  
pp. 55
Author(s):  
José Lucas Guilherme Santos ◽  
Ancélio Ricardo de Oliveira Gondim ◽  
Joaquim Vieira Lima Neto ◽  
Erivan Alves da Silva
Keyword(s):  
Plant Height ◽  
Agricultural Production ◽  
New Technology ◽  
Dry Mass ◽  
Growth And Yield ◽  
Production Model ◽  
Fermentation Time ◽  
Number Of Leaves ◽  
Negative Impacts ◽  
Over Time

<p>O modelo de produção agrícola convencional é economicamente viável, no entanto, é responsável por inúmeros impactos negativos ao meio ambiente e aos indivíduos que o compõe. Baseado neste contexto surge a necessidade à adoção de novas tecnologias que permitam uma produção equiparável, de tal forma que conserve os recursos naturais e que diminua os impactos negativos ao meio ambiente. Com isto objetivou-se neste trabalho estudar o cultivo da cenoura sob a aplicação de biofertilizante. O experimento foi conduzido em casa de vegetação. Os tratamentos resultaram da combinação dos fatores tempo de fermentação do biofertilizante, 10, 20, 30 e 40 dias e quatro concentrações do biofertilizante, 25, 40, 55 e 70%. O delineamento experimental utilizado foi o inteiramente casualizado, no esquema fatorial 4 x 4, com quatro repetições. As características avaliadas foram altura das plantas e número de folhas a cada 10 dias após o desbaste até a colheita, após a colheita foi avaliado número de folhas, altura das plantas, massa seca das folhas e massa fresca e seca da raiz. Para as características avaliadas ao longo do tempo observou-se que o tempo de fermentação do biofertilizante de 26 dias e a concentração do biofertilizante de 47% promoveu maior crescimento das plantas. Na colheita, observou-se que em média, o tempo de fermentação do biofertilizante de 30 dias e a concentração do biofertilizante de 50% promoveram maior crescimento e produção das plantas.</p><p align="center"><strong><em>Growing carrot submitted the application of doses of biofertilizer</em></strong></p><p><strong>A</strong><strong>bstract: </strong>Conventional agricultural production model is economically viable, however, is responsible for numerous negative impacts on the environment and the individuals who compose it. Based on this context there is a need to adopt new technology providing equivalent production in such a way that conserves natural resources and to decrease the negative impacts on the environment. With this objective of this work was to study the cultivation of carrots under the application of biofertilizers. The experiment was conducted in a greenhouse. The treatments resulted from the combination of factors fermentation time of biofertilizers, 10, 20, 30 and 40 days and four bio-fertilizer concentrations, 25, 40, 55 and 70%. The experimental design was completely randomized in a factorial 4 x 4, with four replications. The characteristics were plant height and number of leaves every 10 days after thinning and harvesting, post-harvest was estimated number of leaves, plant height, dry mass of leaves and fresh and dry root. For the characteristics evaluated over time was observed that the biofertilizer fermentation time of 26 days and the concentration of 47% biofertilizer promoted greater plant growth. At harvest, it was observed that on average the biofertilizer fermentation time of 30 days and the concentration of 50% biofertilizer promoted enhanced growth and yield of plants.</p><p><strong> </strong></p>

scholarly journals Desempenho da rúcula sob condições de sombreamento e níveis de salinidade da água de irrigação

2020 ◽  
Vol 16 (4) ◽  
pp. 38-45
Author(s):  
Rilbson Henrique Silva dos Santos ◽  
Mirandy dos Santos Dias ◽  
Francisco de Assis da Silva ◽  
João Paulo de Oliveira Santos ◽  
Saniel Carlos dos Santos ◽  
...  
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Irrigation Water ◽  
Aerial Part ◽  
Saline Water ◽  
Dry Mass ◽  
Family Farming ◽  
Salinity Levels ◽  
Number Of Leaves ◽  
The City

Arugula is a crop of fast vegetative growth and short cycle, widely accepted worldwide. In Brazil, its production generates jobs and income for family farming. However, the use of saline water in the cultivation of this plant is one of the main factors that limit production. Given this situation, the objective of this study was to evaluate the growth of Apreciatta arugula cultivated under conditions of shading and salinity levels of irrigation water. The experiment was conducted in a greenhouse in the experimental area of the Agricultural Sciences Center of the Federal University of Alagoas, in the city of Rio Largo, AL. The treatments were obtained from the combination of two shading conditions (with shading and without shading) and five levels of electrical conductivity of the irrigation water (0.5; 2.0; 3.5; 5.0 and 6.5 dS m-1). The experimental design used was completely randomized in a 2 x 5 factorial scheme. Combined, the factors resulted in 10 treatments with four replications and one plant per plot, totaling 40 experimental units. Arugula plants were evaluated for leaf number, plant height, leaf area and dry matter of the aerial part. Increasing levels of salinity in the irrigation water, lead to a reduction in the number of leaves, plant height and dry mass of the aerial part of arugula plants cultivar Apreciatta. However, the use of shading together with the salinity of irrigation water up to 1.4 dS m-1does not affect the leaf area of arugula plants, being possible to cultivate without considerable losses.

scholarly journals Growth of lulo (Solanum quitoense Lam.) plants affected by salinity and substrate

2008 ◽  
Vol 30 (2) ◽  
pp. 402-408 ◽  
Author(s):  
Sandra Liliana Flórez ◽  
Diego Miranda Lasprilla ◽  
Bernardo Chaves ◽  
Gerhard Fischer ◽  
Stsnislav Magnitskiy
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Dry Matter ◽  
Total Mortality ◽  
Dry Mass ◽  
Matter Content ◽  
Dry Matter Content ◽  
Fruit Species ◽  
Total Plant ◽  
Number Of Leaves

The effects of 0, 30 and 60 mM NaCl and substrates (red peat, sand or 3:1:1 [w/w] mixture of peat, sand, or soil) on vegetative growth of lulo, an Andean fruit species, during 12 weeks were studied. The experiment was carried out by using 2000 cm³ of polypropylene plastic pots under greenhouse conditions. Plant height, number of leaves and nodes, leaf area, total plant dry matter (DM), and shoot/root ratio were evaluated. With the increase of salt concentration, the plant height, the number of leaves and nodes, the leaf areas and plant dry mass DM decreased, whereas shoot/root ratio increased. Sand grown lulo plants were most affected by salinity and presented total mortality at 60 mM NaCl. On the other hand, plants held either in peat or in substrate mixture developed larger height, greater leaf and node numbers, higher leaf area and dry matter content. Shoot/root ratio in control (soil) and sand-grown plants (30 mM NaCl) was lower.

scholarly journals Preliminary Evaluation of Growth Response of Two Cowpea Accessions to Water Stress

2019 ◽  
Vol 39 (04) ◽  
Author(s):  
Rashied Tetteh ◽  
Samuel Kwasi Boateng ◽  
Kwaku Junior Asamoah
Keyword(s):  
Water Stress ◽  
Plant Growth ◽  
Plant Height ◽  
Block Design ◽  
Plant Genetic Resources ◽  
Dry Mass ◽  
Preliminary Evaluation ◽  
Eastern Region ◽  
Number Of Leaves ◽  
Plant Dry Mass

Water deficit is one of the most important factors that affect plant growth and development. To assess the effect of water stress on growth of two cowpea accessions (i.e. UCC 321 and GH 4769), a field study was conducted at the experimental site of CSIR-Plant Genetic Resources Research Institute, Bunso, Eastern Region-Ghana during the minor season. The treatments comprised of non-watered and well-watered cowpea plants for thirty-two days. The experiment was a 2 x 2 factorial replicated three times in a randomised complete block design. Growth was determined by measuring plant height, number of leaves per plant and plant dry mass (i.e. leaf, stem, root and total plant). Water stress reduced plant height, number of leaves and plant dry mass. Dry-mass accumulation in above-ground plant organs was lower in non-watered plants than in the well-watered treatment. This indicated that irrigation was necessary to optimize cowpea production, and that a deficit in irrigation might affect plant growth as soil becomes dry.

scholarly journals Growth and production of basil under different luminosity and water replacement levels

2020 ◽  
Vol 38 (3) ◽  
pp. 324-328
Author(s):  
Rívia de Souza Vaz Oliveira ◽  
Leandro Caixeta Salomão ◽  
Hélber Souto Morgado ◽  
Cleiton Mateus Sousa ◽  
Henrique Fonseca E de Oliveira
Keyword(s):  
Plant Height ◽  
Dry Mass ◽  
Crop Evapotranspiration ◽  
Tukey Test ◽  
Stalk Diameter ◽  
Water Replacement ◽  
Number Of Leaves ◽  
Fresh And Dry Mass ◽  
Different Levels ◽  
System Volume

ABSTRACT Basil is used as spice and for medicinal purposes. Its growth is influenced by environmental factors, mainly soil moisture and air temperature. Thus, this study was installed to evaluate growth and production of basil under different levels of luminosity and water replacement. The experimental design was completely randomized, with six replicates, arranged in split plot scheme, with three luminosity levels in the plots (full sun, 50% and 70% shading) and four water replacement levels in the subplots (25, 50, 75 and 100% ETc). We evaluated plant height, stalk diameter, number of leaves and branches, root system volume, the largest root length, fresh and dry mass of roots and leaves. Data were submitted to variance analysis to observe significant differences between treatments and interactions. Luminosity effects were evaluated using Tukey test (p≤0.05%) and the effects of water regime, with the aid of regression analysis. According to data, 50% shading and 100% water replacement, lost through crop evapotranspiration, resulted in higher values of plant height, stalk diameter, branch growth, fresh and dry mass of leaves, and number of leaves. Full sun environment and 100% water replacement provided an increase in root dry mass and volume.

scholarly journals Emergence and growth of maize submitted to inoculant doses associated with saline water irrigation

2020 ◽  
Vol 50 ◽  
Author(s):  
Hallyson Oliveira ◽  
Ronaldo do Nascimento ◽  
Elka Costa Santos Nascimento ◽  
Robson Felipe de Lima ◽  
Carlos Vailan de Castro Bezerra
Keyword(s):  
Plant Height ◽  
Saline Water ◽  
Seedling Emergence ◽  
Dry Mass ◽  
Saline Water Irrigation ◽  
Salt Level ◽  
Leaf Dry Mass ◽  
Emergence Percentage ◽  
Number Of Leaves ◽  
The Difference

ABSTRACT Salinity, in general, affects the plant growth and development, making it a limiting problem for the agricultural production. This study aimed to evaluate the effect of inoculant doses of Azospirillum brasilense on the emergence and growth of maize submitted to salinity concentrations of the irrigation water. The experiment was carried out in a greenhouse, with a randomized blocks design, in a 3 x 5 factorial [A. brasilense doses (0.0, 0.32 and 0.48 mL/100 seeds) and levels of electrical conductivity of the water (0.3, 0.6, 1.1, 1.7 and 2.3 dS m-1)], in 4 blocks, totaling 60 experimental units. The emergence percentage, emergence speed index, plant height, stem diameter, number of leaves, leaf area, leaf dry mass, stem dry mass, tassel dry mass and root dry mass were evaluated. The treatments between salinity and inoculation had no effect on seedling emergence. The salinity significantly affected growth; however, the number of leaves increased in 12.8 % (V8) and 18.8 % (V10), when comparing the difference between the lowest and highest studied salinity. As for the plant height, there was an increase of 3.7 % up to the threshold salinity of the crop (1.1 dS m-1). There was an increase in the root dry mass with the application of inoculant doses at each studied salt level.

scholarly journals Wood Ash as a Corrective and Fertilizer in Safflower Crop in Oxisol of Brazilian Cerrado

2018 ◽  
Vol 10 (9) ◽  
pp. 412
Author(s):  
Edna M. Bonfim-Silva ◽  
Tulio M. Santos ◽  
Luana G. A. Dourado ◽  
Camila T. R. Silva ◽  
William Fenner ◽  
...  
Keyword(s):  
Plant Height ◽  
Soil Ph ◽  
Dry Mass ◽  
Wood Ash ◽  
Stem Diameter ◽  
Experimental Unit ◽  
External Diameter ◽  
Brazilian Cerrado ◽  
Randomized Design ◽  
Number Of Leaves

This study aimed at estimating the wood ash as a corrective and fertilizer in the safflower crop. This study was done with respect to the development, growth, and production of safflower in response to the wood ash doses applied to Oxisol of the Brazilian Cerrado biome. Adopting the completely randomized design and using five wood ash doses (0, 8, 16, 24, 32 g dm-3) and six replicates, the experiments were performed under greenhouse conditions. Each experimental unit included a 2 dm3 pot, filled with soil that had been incubated earlier for 30 days. The variables studied included soil pH, plant height (cm), stem diameter (mm), number of leaves (plant-1), SPAD index, internal and external diameters of the chapters (cm), number of chapters (plant-1), chapters dry mass (g pot-1), shoot dry mass (g pot-1), volume (cm3 pot-1) and root dry mass (g pot-1) Analysis of variance and subsequent regression test were performed for all the data using SISVAR software, at 5% probability for both. The variables internal and external diameter of the chapters and root volume showed no significant differences. The soil pH revealed a significant effect of the wood ash application tending towards linearity, as did the other vegetative variables of plant height, stem diameter, number of leaves and SPAD index. The productive constituents exhibited improved development when the wood ash was applied to the soil in doses of around 24 g dm-3 or more.

scholarly journals Nutrient contents and growth of corn fertigated with human urine and cassava wastewater

2019 ◽  
Vol 23 (9) ◽  
pp. 681-686 ◽  
Author(s):  
Narcísio C. de Araújo ◽  
Vera L. A. de Lima ◽  
Geovani S. de Lima ◽  
Elysson M. G. Andrade ◽  
Jailton G. Ramos ◽  
...  
Keyword(s):  
Plant Height ◽  
Human Urine ◽  
Mineral Fertilizer ◽  
Dry Mass ◽  
Nitrogen And Phosphorus ◽  
Nutrient Contents ◽  
Randomized Experimental Design ◽  
Number Of Leaves ◽  
Fresh And Dry Mass ◽  
Cassava Wastewater

ABSTRACT This study aimed to evaluate the contents of macronutrients (NPK and S) and the growth of ‘Potiguar’ corn fertigated with human urine, cassava wastewater and their associations with NPK. The experiment was set up in greenhouse located on Campus I of Universidade Federal de Campina Grande. A completely randomized experimental design was used, consisting of eight treatments, corresponding to fertigation with mineral fertilizer NPK formula; organic, composed of yellow water, cassava wastewater and human urine associated with cassava wastewater; organomineral, composed of human urine associated with phosphorus and potassium, cassava wastewater associated with nitrogen and phosphorus and human urine associated with cassava wastewater and phosphorus, with five repetitions. At 50 days after sowing (DAS), plants were evaluated for the leaf NPK and S concentrations and growth variables: number of leaves, plant height, stem diameter, leaf area, fresh and dry mass of leaves, mass of stem and shoots. Nitrogen and phosphorus concentrations and the growth variables number of leaves, plant height, fresh and dry mass of leaves, mass of stem and of shoot were influenced by fertigation with human urine, cassava wastewater concentrations and their associations with NPK. In the leaves of corn cultivar Potiguar the accumulated concentrations of N, P and K, at 50 DAS, varied in the sequence N > K > P. Human urine has potential as source of N in fertigation of corn and cassava wastewater can be used if associated with other sources of nutrients.

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