Journal of Plant and Environmental Research

  • Population Structure of the Macroalgae in the Reef Plateau of Piedade Beach (Jaboatão Dos Guararapes-PE)

    Objective: This work analyzes the structure of macroalgae populations on the reef plateau of Praia de Piedade (08º 10 ’S and 34º 56’W), south coast of Pernambuco state. Methodology: The Relevés method was used. Collections were carried out from January to March and May to July 2005 at stations E1 and E2, in the region between tides. Results: The following parameters were observed: the total number of species (T), the covering of each taxon (Ri), total covering (Rt), diversity (H ‘) and equitability (J). 56 infrageneric taxon were identified, being 31 Rhodophyta, 7 Ochrophyta and 18 Chlorophyta. The total coverage varied between 25.58% at station E2 in June and 85.54% at station E1 in July. The diversity varied from 1.74 to 2.7 bits.cel-¹ in the two periods. Conclusion: These results demonstrate that the macroalgae populations on the reef plateau have medium diversity and are formed by fouling, erect and epiphytic strata.

  • Nutritional and Anti-nutritional Composition of two Agroforestry tree species

    Savanna biome is endowed with many tree species bearing edible fruits, seeds and nuts for human consumption. These fruits play an important role in human nutrition owing to their nutritional values, vitamins, minerals, anti-oxidants and low anti-nutritional factors. The nutritional and anti-nutritional composition of Adansonia digitata and Parkia biglobosa pulp and seeds from guinea savanna eco-system were examined in this study. The nutritional and anti-nutritional composition of the fruits differs. Moisture content was higher (11-18%) in the fruit pulp than in the seeds while the seeds of the two species are rich in protein (16-20%). Parkia biglobosa seeds proved a better source of crude fat (13%), crude fiber (10%), the ash content was slightly higher (4-5%) in the seeds than the fruit pulp. Crude fat (7.91%), crude fibre (7.52%) was higher in Adansonia digitata seed than the fruit pulp. Anti-nutritional content of Adansonia digitata and Parkia biglobosa was generally low, indicating that their consumption would not pose nutritional or health challenges. However the higher anti-nutritional factor in the seeds could be reduces through appropriate processing techniques.

  • Phytostabilzation as a sustainable phytoremediation strategy for lead contaminated soil – Screening of biofuel plants for lead tolerance and accumulation

    The contamination of soil by lead has one of the major environmental problems globally. In present study, the experiment was carried out for lead contaminated soil with four plant species i.e., A. esculentus, A. sativa, G. abyssinica and G. max that were subjected to six lead concentrations i.e., 100, 200, 400, 600, 800 and 1000 mg Pb kg-1 soil. Soil without spiked were taken as control and investigated for lead phytotoxicity, tolerance and accumulation. After 12 weeks of experiment, lead toxicity on growth and biochemi-cal parameters were determined. For four plant species, seed germination and most of the growth parameters were significantly (p

  • Treatment & Reclamation Of Train And Track Wash Water At Trivandrum Railway Station

    Trivandrum central railway station is one of the biggest customers of Kerala water au-thority. The water consumption of railway station is about 50 ML/ month. A major por-tion of the water consumed is utilized for washing trains and tracks. Therefore, about 0.8 MLD of waste water is produced as train and track wash water in the Trivandrum cen-tral railway station. This waste water is discharged into public sewage line without any treatment. If this waste water can be reclaimed it can be reused for washing trains, tracks and platforms. In this study, the waste water samples at Trivandrum railway station were taken from three sources (Bio toilet effluent, fresh train wash water, sewage line waste water) and examined for the water quality parameters. The initial water quality parameters of the sample inferred that this waste water is treatable and reclaimable. For that a lab scale model of treatment unit was set up. After the treatment, the maximum BOD reduction was 94%, COD reduction 82.5%, Total solids reduction 98% and oil& grease reduction 99% was reported. The final effluent quality parameters satisfied KSPCB limits. The maximum quantity of waste water produced was found as 0.8 MLD from the data. By treating 8L of waste water in the lab scale model, a good quality effluent of 2.5L was obtained. By implementing a WWTP in the Trivandrum railway station 0.25 MLD of water can thus be reclaimed.

  • Aridity Impact on the yield and the composition of argan oil (Argania spinosa (L. Skeels))

    In this study, we investigated the effect of environmental conditions on the composition in fatty acid and the yield of argan oil of seeds from seven locations following an increase of aridity gradient; Essaouira, Tamanar, Imouzzer, Admine, Ait Baha, Merght and Bouizakarne. Indeed, the analysis of the composition of argan oil showed that the saturated fatty acids varied in the same way in the fruits of the studied plants. Therefore, oleic acid increased with altitude and linoleic acid decreased with aridity. Moreover, no significant differences were found on oil yield of the studied areas. Furthermore, we compared the antioxidant activity of alimentary and cosmetic oil. The results showed that alimentary oil had the highest antioxidant capacity compared to cosmetic oil.

  • Evaluation and Prediction of Water Quality in the Yangtze River Based on Fuzzy Comprehensive Evaluation Method

    Due to the increasingly serious water pollution of the Yangtze river, the discharge of waste water increases year by year, the water pollution problem is very serious, environmental protection is imminent. In this paper, we study the water quality assessment and prediction, based on the analysis of the conditions and data, the fuzzy comprehensive evaluation method to make quantitative analysis, the quality of the water in the Yangtze river and one dimensional water quality model to calculate two kinds of the main sources of pollutants, finally using the linear regression equation to predict the amount of sewage after ten years, and made the solution.

  • The Influence of the Collection of the Waste Classification on the Control of the Domestic Waste Incineration

    with the continuous development of social economy and the continuous improvement of national living standards in our country, people put forward higher requirements for the quality of living environment around us, and the domestic waste produced in peopleundefineds daily life and the waste treatment produced in the production process have become the key and difficult points that people pay close attention to, and the treatment of domestic waste is related to peopleundefineds health and quality of living environment. Therefore, we should pay attention to the influence of garbage classification collection on the control of domestic waste incineration pollutants. According to my own relevant experience and combined with a wide range of social practice investigation and research, the author discusses the influence of garbage classification and collection on the control of domestic waste incineration pollutants, hoping to provide reference.

  • Paclobutrazol influences post harvest life of Mango Cvs. Dashehari, Langra, Chausa and Fazri

    The treatment consisted of different doses of Paclobutrazol (PP333) namely 1.0g and 0.5g/canopy diameter along with control. Paclobutrazol was applied once in a year 15 October 1997 and 15 September 1998 in soil around the tree canopy spread. Paclobutrazol did not affect on Sugar, pH, Colour, K or glucose-fructose ratio, reduced sugar concentration and did not effect TSS and Firmness of Apple, increased TSS, Ascorbic Acid, Chlorophyll, ß-carotene, amylase, peroxides activity for 12 days in Dashehari Mango in storage at ambient temperature (30-33°C), chemical used Paclobutrazol [(2RS, 3RS)-1-1(4-Chlorophenyl)-4, 4-dimethyl-2-(1,2,4-trizol)-1-yl)] Pentan-3-ethanol.

  • Biochemical and Biological effects of Kaurene oxidase inhibitor such as Paclobutrazol on vegetative in Mango Cvs. Dashehri, Langra, Chausa and Fazri

    The compound Paclobutrazol [(2RS, 3RS)-1-(4-chlorophenyl)-4, 4-dimethyle-2- (1, 2, 4 Triazol-1-y)] pentan-3-ethanol was the action of this retardants can be antagonized by Gibberellins (GA3) and ent-Kaurenoic acid. The growth regulating properties of paclobutrazol are mediated by changes in the levels of important plant hormones including the gibberellins (GAs), abscisic acid (ABA) and cytokinins (CK). Paclobutrazol (PBZ) affects the isoprenoid pathway, and alters the levels of plant hormones by inhibiting gibberellin synthesis and increasing cytokinins level. When gibberellins synthesis is inhibited, more precursors in the terpenoid pathway accumulate and that resulted to the production of abscisic acid. PBZ has been used to provide plant protection against numerous abiotic stresses such as chilling, water deficit stress, flooding and salinity. Paclobutrazol acts as stress protectant by maintaining relative water content, membrane stability index, photosynthetic activity, and photosynthetic pigments and protects the photosynthetic machinery by enhancing the level of osmolytes, antioxidant activities and level of endogenous hormones and thereby enhances the yield. It is suggested that its main biochemical action is to block the reactions that lead from ent-Kaurene to ent-Kaurenoic acid in the course of Gibberellins biosynthesis courses, reduced vegetative growth more intensively than root growth by this compound.


    Objective: The objective of this article is to make an analysis of the anthropic impact on the lo-cal species of Barra de Catuama beach, which is located in the Southeast of the municipality of Goiana, Pernambuco. Methods: For this purpose, we used the methodology of analysis of pho-tos, reading articles published about the subject, and the tools found on the internet, such as news and videos. Results: Through analysis of photos and bibliography, it was possible the perception of the anthropic impact relactive to social, environmental and economic’s quality, in Barra de Catuama beach, since the presence of solid waste and domestic sewage accounted in the decrease of species of the region and of tourists. Conclusion: The conclusion of this ana-lyzes is that the ecological and public damage, prevent the recreation of the bathers and have a direct influence on the fishing and catching crabs, those are one of the main sources of income in the region, stressing that this anthropic impact resulted in the decrease of the population of the species, and a deviation of the local income.