scholarly journals Hydroponics growth of Eucalyptus saligna Sm. on salt-stress mediated by sodium chloride

2012 ◽  
Vol 3 (4) ◽  
pp. 213-218 ◽  
Author(s):  
André Luís Lopes da Silva ◽  
Yohana de Oliveira ◽  
Roberson Dibax ◽  
Jefferson da Luz Costa ◽  
Gessiel Newton Scheidt ◽  
...  
Keyword(s):  
Salt Stress ◽  
Aerial Part ◽  
Dry Mass ◽  
Hydroponic Culture ◽  
Fresh Mass ◽  
Root Number ◽  
Eucalyptus Saligna ◽  
Volume Number ◽  
Micropropagated Plants ◽  
Fresh And Dry Mass

The aim of this work was to evaluate the growth of two clones of Eucalyptus saligna on salt-stress mediated by NaCl in hydroponics. Micropropagated plants of the clones p0 and p1 were acclimatizated and cultivated in hydroponics at 0 and 300 mM NaCl levels. The total length, volume, number, fresh mass and dry mass of the roots, the height, fresh and dry mass of the aerial part and the fresh  and dry mass of the complete plant were evaluated to the 14 days of hydroponic culture with NaCl. There were significant differences among the clones. The clone p0 was superior to the clone p1 in relation to volume of the roots, root number, root fresh mass and total fresh mass of the root. Regards the effect of the salinity on the plants, significant reduction was observed in the height of the aerial part, fresh mass of the aerial part and the total fresh mass. Even so, the interaction between the clones and the concentrations of NaCl was significant for the total fresh mass. In the period of 14 days of hydroponic culture on 300 mM NaCl was possible to discriminate these two clones in relation to the tolerance and susceptibility to the salt stress. The clone p0 presented higher growth and larger tolerance to the salinity than clone p1.

scholarly journals Broccoli production depending on the seed production system and organic and mineral fertilizer

2012 ◽  
Vol 30 (1) ◽  
pp. 143-150 ◽  
Author(s):  
José Carlos Lopes ◽  
Janaína Mauri ◽  
Adésio Ferreira ◽  
Rodrigo S Alexandre ◽  
Allan R de Freitas
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Seed Production ◽  
Production System ◽  
Aerial Part ◽  
Dry Mass ◽  
Mineral Fertilization ◽  
Espírito Santo ◽  
Fresh And Dry Mass ◽  
Espirito Santo

The experiment was conducted in a greenhouse at the Universidade Federal do Espirito Santo, in Alegre, Espirito Santo state, Brazil, to evaluate the broccoli production depending on the seed production system and organic and mineral fertilization. Seeds of the broccoli cultivar Ramoso Piracicaba were originated from lots of seed obtained in an organic and conventional production system. The experimental design was of randomized blocks, with four replications in a factorial arrangement combination of the lots, 2x5 (organic and mineral fertilized seeds) and substrates [S1 (soil + sand + manure), S2 (soil + sand + manure + NPK), S3 (soil + sand + manure + Fertium® 10 g L-1), S4 (soil + sand + manure + Fertium® 30 g L-1) and S5 (soil + sand + manure + Fertium® 50 g L-1]. The analyzed variables were emergency, fresh and dry mass of aerial part, emergency speed and height of seedlings after 28 days of sowing, and plant diameter, leaf area, number of leaves, fresh and dry mass of aerial part, plant height, root volume, fresh and dry root mass, absolute and relative growth rates and increment to leaf area and plant height after 104 days. The emergency was similar in the different substrates; great vigor occurred on conventional seeds; the mineral fertilization increased the production of fresh mass of aerial part; the use of substrate containing soil, sand soil conditioner Fertium (30 to 50 g L-1) increased the volume, fresh and dry mass of roots and rate of increase in these variables.

scholarly journals SPATIAL DISTRIBUTION OF PHYSIOLOGICAL QUALITY OF Joannesia princeps Vell. SEEDS1

2018 ◽  
Vol 41 (4) ◽  
Author(s):  
Rômulo André Beltrame ◽  
José Carlos Lopes ◽  
Julião Soares de Souza Lima ◽  
Vagner Mauri Quinto
Keyword(s):  
Spatial Distribution ◽  
Root System ◽  
Spatial Dependence ◽  
Aerial Part ◽  
Dry Mass ◽  
Fresh Mass ◽  
Plastic Bags ◽  
Mother Plants ◽  
Physiological Quality

ABSTRACT The objective of this study was to analyze the spatial distribution of the attributes that determine the physiological quality of Joannesia princeps seeds. Seeds were collected, individually from, 40 mother plants in the Horto Florestal Municipal Laerth Paiva Gama, in Alegre-ES, which constituted the georeferenced sampling mesh. For germination, the seeds tegument was cracked and was held the imbibition in gibberellic acid GA3 500 mg L-1 for 24 h in environmental chamber with temperature adjusted to 30 ºC. The seeds were sown in plastic bags of ± 600 cm3 containing soil+sand+manure in the proportion of 1:1:1. On the 65th day after sowing, the following variables were analised: emergence (E), emergence speed index (IVE), root length (CR), diameter of base (DC), shoot length of the aerial part (CPA), fresh mass of the root system (MFSR), fresh mass of the aerial part (MFPA), dry mass of the root system (MSSR) and dry mass of the aerial part (MSPA). Data were subjected to descriptive statistics, geostatistics and kriging. With the exception of CPA and MFSR, it was found spatial dependence for the other studied variables: E, IVE, CR, DC, MFPA, MSSR e MSPA; varying of 14,0 a 47,5 m, so that the lowest range for the CR and longer range and degree of spatial dependence for the IVE. The analysis of the spatial distribution of the physiological quality of seeds of J. princeps can be used as a tool to define the sampling region of seeds with high and low vigor.

scholarly journals Water Availabilities Associated with Natural Phosphate and Triple Superphosphate in Radish Cultivation

2019 ◽  
pp. 1-11
Author(s):  
Edna Maria Bonfim-Silva ◽  
Juliane de Souza Beltrão ◽  
Raphael Pereira França de Paula ◽  
Wellington Fava Roque ◽  
Ana Paula Alves Barreto Damasceno ◽  
...  
Keyword(s):  
Aerial Part ◽  
Irrigation Management ◽  
Gravimetric Method ◽  
Field Capacity ◽  
Dry Mass ◽  
Fresh Mass ◽  
Triple Superphosphate ◽  
Mato Grosso ◽  
Natural Phosphate ◽  
Phosphate Fertilization

Aims: The objective of this study was to evaluate the development of giant Crimson radish cultivated in a oxisol under phosphate fertilizer sources (natural phosphate, triple superphosphate, natural phosphate + triple superphosphate and control) associated with water availabilities (40, 80 and 120% of the field capacity). Study Design: The experimental design was completely randomized, in a 4x3 factorial scheme, with 4 replications (48 units). Place and Duration of Study: The research was conducted in a greenhouse belonging to the Federal University of Mato Grosso, in the municipality of Rondonópolis (MT). Methodology: The dystrophic Oxisol was used to fill the 1.5 dm3 pots. The irrigation management was in accordance with the methodology of the maximum water retention capacity, by the gravimetric method. Phosphate fertilization was applied before sowing using 265 mg dm-3 phosphorus, varying the source used, triple superphosphate and Bayovar Natural phosphate. After the emergence of the plants, the other nutrients were applied to the soil. The parameters related to vegetative development and after the harvest of radish were evaluated at 20 and 35 days after sowing. Results: The parameters fresh mass of the aerial part, dry mass of the tubercle, dry mass of the aerial part, fresh mass of tubercle and length of tubercle had the highest values with the use of triple superphosphate, and for the field capacities of 80 and 120%. The highest harvest index (1.51) was found for the use of Natural phosphate in the field capacity of 120%. The water consumption by the plants was higher with the use of triple superphosphate and field capacity of 120% (6,425.25 L). The efficiency of water use was better with the application of triple Superphosphate and 40% of the field capacity (0.0547 g mL-1). Conclusion: There was influence of both water availabilities and phosphate fertilization on the studied parameters. Triple superphosphate associated with 80% of the field capacity allowed the best productivity averages for radish.

scholarly journals Plant Growth Regulators in the in Vitro Cultivation of Acmella oleracea (L.)

2020 ◽  
Vol 8 (2) ◽  
pp. 774
Author(s):  
Nastassja Kimberlly Lima ◽  
Eloisa Schneider Da Silva ◽  
Rayane Monique Sete Da Cruz ◽  
Pedro Henrique Riboldi Monteiro ◽  
Glacy Jaqueline Da Silva
Keyword(s):  
Growth Regulators ◽  
Root Length ◽  
Aerial Part ◽  
Large Scale ◽  
Dry Mass ◽  
Fresh Mass ◽  
Limiting Factor ◽  
Naphthalene Acetic Acid ◽  
In Vitro Cultivation

Acmella oleracea is a tropical plant, typical of the northern region of Brazil. The species belongs to the Asteraceae family and has great therapeutic, pharmacological and industrial potential. A limiting factor for the production of this species on a large scale is the short life cycle. The tissue culture programs use synthetic hormones based on cytokinins, such as kinetin and benzylaminopurine (BAP) and auxins such as naphthalene acetic acid (ANA). The objective of this research was to evaluate the effect of growth regulators on the production of Acmella oleracea "in vitro". The experimental test was carried out with control (C), without the addition of growth regulators and five treatments, composed of: (T1) 0.1; (T2) 0.3; (T3) 0.5 mg L-1 kinetin; (T4) 0.1 mg L-1 of BAP and ANA; (T5) 0.5 mg L-1 of BAP and ANA. The experimental design was a completely randomized block in a factorial arrangement with six treatments, three blocks and twenty-five repetitions per block. The evaluated parameters were: germination, root formation, aerial part length, root length, aerial part fresh mass and root fresh mass, aerial part dry mass and root dry mass. The data obtained were subjected to analysis of variance (p <0.05) and compared using the Tukey test. The results showed that kinetin positively contributed to seed germination and aerial part dry mass development. Treatment 1 had the best results for the parameters root length, shoot length and root dry mass.

scholarly journals Biometric characteristics of fruits, seeds and plants of Hancornia speciosa Gomes. (Apocynaceae)

2019 ◽  
Vol 13 ((04) 2019) ◽  
pp. 622-627
Author(s):  
Alan Mario Zuffo ◽  
Aécio Busch ◽  
Fábio Steiner ◽  
Charline Zaratin Alves ◽  
Francisco de Alcântara Neto ◽  
...  
Keyword(s):  
Seedling Emergence ◽  
Dry Mass ◽  
Stem Diameter ◽  
Fresh Mass ◽  
Pulp Yield ◽  
Transverse Diameter ◽  
Shoot Height ◽  
Volume Number ◽  
Randomized Design ◽  
Hancornia Speciosa

The economic and scientific interest in Hancornia speciosa Gomes (mangabeira) has increased in recent years, especially due to the commercialization of its fruits and the extraction of natural compounds with high pharmacological potential. This paper aims to determine and correlate the main physical and biometric characteristics of fruits and seeds of mangaba tree, as well as identifying the most appropriate substrate for the seedling emergence test. The following physical and biometric traits were measured in 100 fruits and 100 seeds: longitudinal diameter, transverse diameter, thickness, fresh mass, pulp fresh mass, volume, number of seeds. To identify the best substrate, a completely randomized design with two treatments (substrates) and ten replications of 20 seeds was used. The evaluated substrates were: sand and commercial substrate (Plantmax HT®). The shoot height, root length, stem diameter, total dry mass, and the relation between shoot height and stem diameter were evaluated at 50 days after sowing. Mangaba fruits and seeds showed great variations in their biometric traits, in addition to significant and positive correlation predominant in most characteristics. High fruit pulp yield can be optimized with the selection of plants with fruits show greater fresh mass due to the high degree of association between this characteristic and pulp yield. The use of the commercial substrate resulted in higher shoot height, greater number of leaves, and higher shoot height/stem diameter ratio.

scholarly journals Vegetative Performance of Two Cultivars and Four Hybrids of Pineapple in Côte d’Ivoire

2021 ◽  
pp. 282-288
Author(s):  
N’guetta Adélaïde ◽  
Aby N’goran ◽  
Koffi Kouamé Cyrille Germain ◽  
Atsin Guy Joël Olivier ◽  
Traoré Siaka
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
International Market ◽  
Dry Mass ◽  
Fresh Mass ◽  
Ananas Comosus ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Significant Difference ◽  
Fresh And Dry Mass

Since the early 2000s, pineapple from Côte d’Ivoire has suffered a discount in its marketing due to the heterogeneity of the quality of its fruit and the arrival of MD2 on the international market. In order to help pineapple from Côte d'Ivoire once again win back the international market, Ananas comosus hybrids with an early natural coloring have been developed at the CNRA. The agronomic performances of these hybrids were tested at the research station of Anguédédou. Vegetative characteristics such as plant fresh mass, stem fresh and dry mass, number of leaves generated and leaf D fresh mass of these hybrids H1, H2, H3 and H4 were compared to those of cultivars Smooth Cayenne and MD2 at 2, 4 and 6 months. The results obtained showed no statistically significant difference in plant mass between hybrid H4 (2675 g) and cultivars MD2 (2645 g) and Smooth Cayenne (2763 g) after 6 months of planting. The fresh and dry mass of the stems of these three varieties were also statistically identical. Hybrid H4 leaf D fresh mass was very low (55 g) at six months of planting compared to the two cultivars (73 g each). Hybrids H2 and H3 at this same period gave leaf masses of over 80 g. Regarding the characteristics assessed, hybrids H4 and H3 had much more conformity with cultivars Smooth Cayenne and MD2.

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 Purple nutsedge (Cyperus rotundus L.) extract as carrot growth and production inducer

2021 ◽  
Vol 17 (5) ◽  
pp. 31-42
Author(s):  
Geraldo Pastore ◽  
César Antônio da Silva ◽  
Nelson Geraldo Golinski ◽  
Fernando Zuchello ◽  
Cícero José da Silva
Keyword(s):  
Aqueous Extract ◽  
Root Length ◽  
Aerial Part ◽  
Dry Mass ◽  
Root Diameter ◽  
Cyperus Rotundus ◽  
Fresh Mass ◽  
Root Mass ◽  
Purple Nutsedge ◽  
Total Productivity

There is evidence that the purple nutsedge (Cyperus rotundus L.) aqueous extract can induce the plants rooting due to the high auxin concentrations. This study aimed to evaluate the effect of application seasons and concentrations of purple nutsedge aqueous extract application on the growth and production of carrot, cultivar Brasília. The experimental design was in randomized blocks, in a 2 x 5 factorial scheme in two seasons of the extract application (25 and 50 days after sowing) and five concentrations of (0%, 10%, 20%, 30% and 40%) with four replicates. Harvesting was carried out at 90 days after sowing, being evaluated the following morphological parameters: root diameter (cm); root fresh mass (g plant-1); plant height (cm); aerial part fresh mass (g plant-1); root dry mass (g plant-1); aerial part dry mass (g plant-1); plant dry mass (g plant-1); ratio between root dry mass and aerial part dry mass; root length (cm); commercial productivity (t ha-1); defective root mass (t ha-1); total productivity (t ha-1); commercial yield (roots kg-1); and root classification by length. The extract application at 50th day was more efficient for the root diameter (3.37 cm); fresh root mass (120.7 g plant-1); root length (15.4 cm); commercial productivity (68.2 t ha-1); total productivity (73.6 t ha-1); and commercial roots (8.8 roots kg-1). Root classification by length showed a higher percentage in the 14 cm classification range. The parameters did not present significant differences in both seasons, at 25th and 50th days, respectively, for root dry mass (12.0 and 12.8 g plant-1), ratio between dry mass of roots and aerial part (1.66 and 1.57), and defective root mass (1.3 and 1.5 t ha-1).

scholarly journals Ruellia simplex cuttings propagation produced on carnauba waste substrate

2020 ◽  
Vol 14 ◽  
Author(s):  
Taciella Fernandes Silva ◽  
Klayton Antonio Do Lago Lopes ◽  
Janaiane Ferreira Dos Santos ◽  
Ana Paula De Almeida Sousa ◽  
Francisca Gislene Albano-Machado ◽  
...  
Keyword(s):  
Root System ◽  
Aerial Part ◽  
Ornamental Plants ◽  
Dry Mass ◽  
Fresh Mass ◽  
Randomized Design ◽  
Shoot Number ◽  
Significant Difference ◽  
Number Of Leaves ◽  
Completely Randomized Design

The production of quality seedlings is necessary for the trading of ornamental plants. Seedling quality depends on several factors, among these factors, the substrate is highlighted. Thus, this study aimed to evaluate the effect of substrates based on bagana of carnauba, in the production of Ruellia simplex seedlings, by vegetative propagation. A completely randomized design was adopted, with six treatments and four replications. The treatments (substrates) were composed of bagana of carnauba (BC) and soil, in the following proportions: BC0 - 0% BC + 100% of soil; BC20 - 20% BC + 80% of soil; BC40 - 40% BC + 60% of soil; BC60 - 60% BC + 40% of soil; BC80 - 80% BC + 20% of soil; BC100 - 100% BC + 0% of soil. The plot consisted of a plant. After 45 days of cutting, it was evaluated: number of shoots; number of leaves per shoot; diameter of the highest shoot; length of the highest shoot; root length; inflorescence number; number of flowers per inflorescence; leaf area; root volume; aerial part fresh mass; root system fresh mass; aerial part dry mass; and root system dry mass. There was a significant difference for the variables, number of leaves per shoot, diameter and length of the highest shoot, number of flowers per inflorescence, fresh and dry mass of the aerial part. Having a direct relationship between the increase in the proportion of bagana of carnauba volume and the inflorescence number, the substrate 100% of bagana of carnauba is indicated.

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