scholarly journals IS Annona emarginata CAPABLE OF ACCUMULATE ESSENTIAL HEAVY METALS WITHOUT DAMAGES IN THE METABOLISM?

2017 ◽  
Vol 39 (4) ◽  
Author(s):  
DANIEL BARON ◽  
AMANDA CRISTINA ESTEVES AMARO ◽  
ANA CLAUDIA MACEDO ◽  
CARMEN SÍLVIA FERNANDES BOARO ◽  
GISELA FERREIRA
Keyword(s):  
Heavy Metals ◽  
Ionic Strength ◽  
Gas Exchange ◽  
Vegetative Growth ◽  
Dry Matter ◽  
Ionic Concentration ◽  
Dry Matter Accumulation ◽  
Gas Exchanges ◽  
Positive Effects ◽  
Strength Variation

ABSTRACT This study aimed to evaluate if ionic strength variation causes differential accumulation of heavy metals in plants of Annona emarginata (Schltdl.) H. Rainer var. ‘terra-fria’, modifying gas exchange and dry matter production. The seedlings were cultivated under different ionic strengths of the ‘Hoagland and Arnon’s’ nutrient solution (75% I, 50% I and 25% I). At 180 days after the application of the treatments, the effects of the essential heavy metals on the physiological parameters and foliar ionic concentration were assessed. The leaf gas exchanges and vegetative growth were affected by the variation in the essential heavy metals, with positive effects on the plants that were treated with 75%I. The seedlings that were grown under 75% I presented higher concentrations of Zn (24.2mg kg-1). On the other hand Fe (453mg kg-1) e Mn (803.5mg kg-1) accumulated more under 25% I, but gas exchanges and vegetative growth were reduced, compared to 50%I and 75%I. We can conclude that the ionic strength variation alters gas exchange and the dry matter accumulation, causing differential accumulation of Fe, Mn and Zn in A. emarginata, occurring inverse relationship between increased ionic strength and Fe and Mn content, besides directly relationship to the Zn content.

Gas exchange characteristics and dry matter accumulation of soybean treated with Nod factors

2007 ◽  
Vol 164 (10) ◽  
pp. 1391-1393 ◽  
Author(s):  
Juan Jose Almaraz ◽  
Xiaomin Zhou ◽  
Alfred Souleimanov ◽  
Donald Smith
Keyword(s):  
Gas Exchange ◽  
Dry Matter ◽  
Dry Matter Accumulation ◽  
Nod Factors ◽  
Gas Exchange Characteristics

scholarly journals Effect of biostimulants on dry matter accumulation and gas exchange in plantain plants (Musa AAB)

2019 ◽  
Vol 13 (2) ◽  
pp. 151-160
Author(s):  
Diana Mateus-Cagua ◽  
Gustavo Rodríguez-Yzquierdo
Keyword(s):  
Gas Exchange ◽  
Dry Matter ◽  
Photosynthetic Activity ◽  
Leaf Gas Exchange ◽  
Block Design ◽  
Dry Matter Accumulation ◽  
Vegetative Phase ◽  
Physiological Processes ◽  
Randomized Complete Block Design ◽  
Positive Effect

Biostimulants can potentially improve plant growth and development, modifying physiological processes. This study evaluated the effect of four biostimulants on the growth of ‘Hartón’ plantain plants and the leaf gas exchange during the vegetative phase. This experiment was developed on a plantain farm’s nursery in Fuente de Oro (Colombia) with a randomized complete block design with four replicates. The treatments were the biostimulants: Bactox WP®: Bacillus subtilis (Bs); Baliente®: Bacillus amyloliquefaciens (Ba); Tierra Diatomeas®: silicon dioxide (Si); Re-Leaf®: salicylic acid (SA) and the control (water). All products had a positive effect on the accumulation of total dry matter (DM) (between 58.4 and 21.9%) and on the photosynthetic activity (a maximum of 110 and 24.3% in first and second evaluation), as compared to the control, while no differences were found (P>0.05) for the foliar emission rate and chlorophyll content between the treatments. The plants treated with Bs had the greatest DM accumulation at the end of the study and a constant, high photosynthetic activity. All the while Bs, Ba and Si managed to stimulate greater early photosynthetic activity. According to the results, the use of these biostimulants during the vegetative phase had an effect on the physiological processes that enhance DM accumulation in plantain plants, which could be potentially useful for the transplanting stage and increase the reserves used during their establishment and development in the field.

Gas Exchange and Dry Matter Accumulation during Leaf Development

1985 ◽  
pp. 157-216 ◽  
Author(s):  
Ingrid Tichá ◽  
J. Čatský ◽  
Damuše Hodáňová ◽  
Jana Pospišilivá ◽  
M. Kaše ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Leaf Development ◽  
Dry Matter ◽  
Dry Matter Accumulation

Dry Matter, Nodulation and Nutrient Uptake in Chickpea (Cicer arietinum) as Influenced by Irrigation and Phosphorus

1989 ◽  
Vol 25 (3) ◽  
pp. 349-355 ◽  
Author(s):  
S. S. Parihar ◽  
R. S. Tripathi
Keyword(s):  
Grain Yield ◽  
Nutrient Uptake ◽  
Irrigation Water ◽  
Vegetative Growth ◽  
Dry Matter ◽  
Dry Weight ◽  
Irrigation Scheduling ◽  
Dry Matter Accumulation ◽  
Pan Evaporation ◽  
Eastern India

SUMMARYThe response of chickpea to irrigation and phosphorus was studied at Kharagpur in Eastern India. Irrigation scheduling was based on the ratio between irrigation water applied and cumulative pan evaporation (ID/CPE), and had little effect on dry matter accumulation. Increasing the frequency and amount of irrigation reduced the number and dry weight of nodules per plant, which increased to a maximum 70 days after sowing and then declined. Irrigation significantly reduced grain yield as a result of excessive vegetative growth at the expense of pod formation. Application of phosphorus promoted nodulation and increased both nodule dry weight and the concentration of N, P and K in grain and stover. Uptake of N, P and K by the crop was also increased.

Leaf gas exchange, chloroplastic pigments and dry matter accumulation in castor bean (Ricinus communis L) seedlings subjected to salt stress conditions

2008 ◽  
Vol 27 (3) ◽  
pp. 385-392 ◽  
Author(s):  
Hugo Alves Pinheiro ◽  
José Vieira Silva ◽  
Laurício Endres ◽  
Vilma Marques Ferreira ◽  
Celene de Albuquerque Câmara ◽  
...  
Keyword(s):  
Salt Stress ◽  
Gas Exchange ◽  
Castor Bean ◽  
Dry Matter ◽  
Ricinus Communis ◽  
Leaf Gas Exchange ◽  
Stress Conditions ◽  
Dry Matter Accumulation ◽  
Ricinus Communis L ◽  
Chloroplastic Pigments

scholarly journals Decomposed Buriti Stem and Nitrogen Application Rates on the Growth of Eugenia dysenterica DC (Myrtaceae) Seedlings

2019 ◽  
Vol 11 (16) ◽  
pp. 187 ◽  
Author(s):  
Wéverson Lima Fonseca ◽  
Augusto Matias de Oliveira ◽  
Tiago de Oliveira Sousa ◽  
Alan Mario Zuffo ◽  
Râmison Fonseca dos Santos ◽  
...  
Keyword(s):  
Dry Matter ◽  
Dry Matter Accumulation ◽  
Positive Effects ◽  
Application Rates ◽  
Randomized Design ◽  
Mauritia Flexuosa ◽  
Loam Soil ◽  
Eugenia Dysenterica ◽  
N Rates ◽  
Fertilizer Rates

The effects of substrates formulated with different proportions of decomposed buriti stem (Mauritia flexuosa) and the application of nitrogen fertilizer rates in the production of cagaita (Eugenia dysenterica DC.) seedlings were investigated in this study. The treatments were arranged in a completely randomized design, in a 3 × 5 factorial: three substrates formulated from different proportions of decomposed buriti stem (0, 25 and 50%) with a clay loam soil (Oxisol), and five N fertilizer rates (0; 100; 200; 300 and 400 mg dm-3), with four replicates. At 60 days after emergence, the plant height, stem diameter, leaf area, root length, dry matter accumulation of shoots, roots, and total, shoot:root dry matter ratio (SRR), height:diameter ratio (HDR), and Dickson quality index (DQI) were measured. The substrate containing soil and decomposed buriti stem in the proportion of 3:1 (v:v), in association with the application of N rates from 167 to 190 mg dm-3 is recommended for the production of cagaita seedlings, resulting in positive effects on plant growth and development as reported by higher PH, SRR, and HDR. The application of 154 mg dm-3 of N resulted in higher DQI of the cagaita seedlings.

scholarly journals Doses and Times of Trinexapac-ethyl Application in Soybean Development and Yield

2019 ◽  
Vol 11 (14) ◽  
pp. 234
Author(s):  
L. Z. de S. Sales ◽  
E. Lazarini ◽  
I. R. Sanches ◽  
J. W. Bossolani ◽  
F. L. dos Santos ◽  
...  
Keyword(s):  
Experimental Design ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Vegetative Growth ◽  
Dry Matter ◽  
Grain Filling ◽  
Dry Matter Accumulation ◽  
Phenological Stage ◽  
Phenological Stages ◽  
Agronomic Characteristics

The intense vegetative growth is one of the problems faced by soybean producers, causing the lodging, making difficult and damaging the harvest and, even, the efficiency of the application of agricultural defenses. The use of growth regulators is an important tool in the management of growth, in addition, it can favor the transport of photoassimilates for grain filling. Therefore, the objective was to evaluate the best dose and time of trinexapac-ethyl application in the development and yield of soybean varieties. The experiment was conducted in the Selvíria County, Brazil (20°20′53″ S, 51°24′02″ W). The experimental design was used in randomized blocks with treatments arranged in a factorial scheme 5 x 3 (doses x times), with four replications. The varieties used were the BRS Valiosa RR and the BMX Potência RR, the doses of the growth regulator were 0; 50; 100; 200 and 400 g ha-1 of trinexapac-ethyl (Moddus®) and the application times were at the phenological stages V7, V10 and R2. The varieties BRS Valiosa and BMX Potência, respectively, were obtained at the phenological stage V10, with application of 200 g ha-1 of trinexapac-ethyl, greater dry matter accumulation of leaves and pods. Nevertheless, the same did not act on the foliar area of the BRS Valiosa RR variety in the same way that it did not induce changes in the production components of the BMX Potência RR variety. Regardless of the application period (V7, V10 and R2) and the dose (up to 400 g ha-1), the application of trinexapac-ethyl was not a management capable of influencing the agronomic characteristics and the lodging of the plants in both varieties.

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