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Importance of the Role of Gibberellic Acid and Potassium Nitrate in Seed Germination Habanero

Journal of Chemistry and Chemical Engineering 2013年第2期7卷 145-153页

作者： Oscar Gabriel Villegas-Torres martha ldla dommguez-patino Carlos Manuel Acosta-Durfin HectorSotelo-Nava Jose Daniel Lopez-Gomez Guillermo Flores-Sfinchez Faculty of Agricultural Sciences University of the State of Morelos Cuernavaca 62209 Mexico Faculty of Chemical Sciences and Engineering University of the State of Morelos Cuernavaca 62209 Mdxico Research Center for Applied Science and Engineering University of the State of Morelos Cuernavaca 62209 M~xico

The habanero chili （Capsicum chinense Jacq.） is a species of great demand in the domestic and international markets. One problem in the cultivation is low percentage of seed germination. There is little information on the use of promoters and imbibition time to increase this parameter, without compromising the quality of seedlings. In this context, authors assessed the independent effect of GAs （gibberellic acid） and KNOs at concentrations of 0, 100, 200, 300, 400 and 500 mg·L1. Seeds without preconditioning were the witness. The experimental unit was a Petri dish with 50 seeds on filter paper placed equidistant. There were three replicates per treatment and the experimental design was randomized complete block. Imbibition time was 24 h. The experimental units were kept in an incubator at 22 ± 2 ℃. From the time of planting and for periods of 24 h for 14 d, experimental units were reviewed to determine the time at the beginning of germination and the total cumulative percentage. The authors also determined the number of normal and abnormal seedlings, the length of hypocotyl and radicle, weight of fresh and dry matter of seedlings. On the fifth day after sowing in vitro, concentrations of 500 mg·L^-1 of GAs, 300 and 400 mg·L^-1 KNO3, increased 208% the percentage of seed germination of habanero chile. On day 14 after sowing in vitro concentrations of 500 mg·L^-1 GA3, 300 and 400 mg·L^-1 KNO3, increased 23% normal seedlings and 40% dry matter thereof, with respect to seeds obtained without preconditioning. Unconditioned seeds before sowing produced 125% more seedlings.

关键词： Imbibition hypocotyl radicle dry matter fresh matter.

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Simulaccion Processes of a Mathematical Model to Determine the Growth of Tomato under Plastic Cover

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Agricultural Sciences 2015年第12期6卷 1532-1537页

作者： Luz Elva Marín Vaca martha Lilia Domínguez patino Nadia Lara Ruiz Miguel Aguilar Cortes Centro de Investigacion en Ingenieria y Ciencias Aplicadas Universidad Autonoma del Estado de MorelosCuernavacaMexico Facultad de Ciencias Quimicas e Ingenieria Universidad Autonoma del Estado de MorelosCuernavacaMexico

The tomato is one of the horticultural crops of the greatest economic value;for this reason, flexibility of management is usable. The population density in a crop of vegetables is determined by the distance between the plants and so it is necessary to choose the number of plants per square meter since the saturation of plants will lead to competition between sunlight, nutrients and weed. The objective of this work is to make the appropriate investigation for the use of the model proposed in order to describe the growth of tomato in greenhouse to high density of two plants per container to two bunches per plant, resulting in eight plants per square meter to grow, by means of a simulator of growth by computer. Of this work, it is concluded that it is possible to use the model to describe the growth of plants, and in the near future it will be possible to develop a simulator by computer of the growth of these crops in order to improve their quality and increase their production.

关键词： Simulation Plastic Cover Tomato

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Characterization by Thermogravimetric Analysis of Polymeric Concrete with High Density Polyethylene Mechanically Recycled

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Journal of Minerals and Materials Characterization and Engineering 2014年第4期2卷 259-263页

作者： Alma Delia Rodriguez Martinez martha Lilia Dominguez patino Rosa Maria Melgoza Aleman Gerardo Antonio Rosas Trejo Graduate Engineering and Applied Science Autonomus University of the State of MorelosChamilpaMorelosMexico Faculty of Chemical Sciences and Engineering Autonomus University of the State of MorelosChamilpaMorelosMexico Metallurgical Research Institute University Michoacana de San Nicolas de HidalgoMoreliaMichoacanMexico

This paper presents the results of the characterization by thermogravimetric analysis of a new composite material called polymeric concrete. The polymeric concrete contains micro-particles obtained from High Density Poly-Ethylene (HDPE) mechanically recycled (post-consumer bottles);the official Mexican standard NMX-E-232-SCFI-1999 considers the HDPE as the recyclable plastic material. Thermo-grams based on weight lost were obtained from the raw material (HDPE) and the polymer concrete in order to obtain the glass transition temperature (Tg) and melting temperature (Tf). The analysis conditions were defined from 20°C to 180°C and the heat rate of 1°C/minute. The results show that the glass transition temperature of polymeric concrete is 46°C and the HDPE is 38°C. These results mean that the polymeric concrete is more resistant to decomposition. With respect to the melting temperature, the results show that the 2°C difference between polymeric concrete and HDPE is not significant. The polymeric concrete with HDPE recycled can be considered as composite material thermoplastic. The new material melts when it is heated to 146°C and has the ability to be softened, processed and reprocessed with temperature and pressure changes, which make it possible to obtain molded pieces in the desired shape.

关键词： Polymer Concrete High Density Poly-Ethylene Thermogravimetric Analysis

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Evaluation of Methodology for Life Cycle Assessment Applied to Hydroponic Tomato Processes from a System Approach

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Journal of Agricultural Science and Technology(B) 2014年第10期4卷 811-815页

作者： Nadia Lara Ruiz martha Lilia Dominguez patino Oscar Gabriel Villegas Torres Luz Elva Marin Vaca Miguel Aguilar Cortes Center of Engineering and Applied Science Autonomus University of Morelos State Chamilpa 62209 Morelos Mexieo Faculty of Chemical Sciences and Engineering Autonomus University of Morelos State Chamilpa 62209 Morelos Mexico Faculty of Agricultural Sciences Autonomus University of Morelos State Chamilpa 62209 Morelos Mexico

Analysis of agricultural production systems of hydroponic tomato in Morelos state of Mexico, through a systematic approach, called systems development of life cycle （SDLC） was performed by comparing this with the methodology known as life cycle assessment （LCA）. This permits to analyze the differences in approaches of all these methodologies to propose improvements in the current system, which can allow an improved assessment of the environmental quality of agricultural products, which often is subject to confusion. That due to measurement parameters are not generally accepted by society, producers and consumers, may ensure that the process is fully sustainable and is considered quite as a green technology processes towards an ecological benefit and therefore for the humanity.

关键词： Analysis hydroponic LCA SDLC.

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Nitrogen/Ammonium Concentration Response of Vegetable and Flower Crops

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Journal of Agricultural Science and Technology(B) 2014年第4期4卷 261-266页

作者： Armando Hemandez-Perez Oscar Gabriel Villegas-Torres martha Lilia Dominguez-Patifio martha Lilia Dominguez-patino Hector Sotelo-Nava Antonio Rodriguez-Martinez Luis Alonso Valdez-Aguilar Iria Alia-Tejacal Faculty of Agricultural Sciences University Autonomous of the State of Morelos Cuernavaca 62209 Mexico Faculty of Chemical Sciences and Engineering University Autonomous of the State of Morelos Cuernavaca 62209 Mexico EngineeringandAppliedScience Research Center UniversityAutonomous of the State ofMorelos Cuernavaca 62209 Mexico Department of Horticulture University Autonomus Agrarian Antonio Narro Saltillo 25315 Mexico

Nitrogen （N） is the element with the greatest influence on the growth of vegetables and ornamentals, however, form of delivery, either as nitrate （NO3） or ammonium （NH4＋） has different effects on plant development. The NO3 is the main form of N that plants absorb, but when it is the only source of N that has slight effects on root growth, no effects over enzymatic activities, and stimulates the absorption and translocation of cations within the plant. The NH4＋ is the easiest way of assimilation but is highly toxic when the only source or with respect to the concentration of NO3 is too high. To avoid toxicity, the NH4＋ must not exceed 20% of the total N amount in the formulation, however, it is important to consider the species, variety and environmental conditions. The N as supplied also affects the resistance or susceptibility of plants to diseases, but depends on the species and the type of pathogen.

关键词： Nitrate ammonium vegetables ornamental toxicity nutrition.

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Scientific Software Installation Testing Using a Plan-Do-Check-Act Methodology： A Case Study

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Journal of Chemistry and Chemical Engineering 2015年第3期9卷 227-232页

作者： Jorge Dominguez-Patifio Antonio Rodriguez Martinez Rosenberg Javier Romero Marco Cruz Chavez martha Lilia Dominguez patino Rosa Maria Melgoza Aleman Posgraduate School in Engineering and Applied Science Autonomous University of Morelos State Cuernavaca 62209 Mexico Research Centre of Engineering and Applied Science Autonomous University of Morelos State Cuernavaca 62209 Mexico FCQeI (Faculty of Chemical Sciences and Engineering) Autonomous University of Morelos State Cuernavaca 62209 Mexico

The scientific software installation testing has a main goal： Evaluate if the software meets its requirements and specifications. In this paper, the scientific software installation in six machines is evaluated. The software installation was tested using a PDCA （Plan-Do-Check-Act） approach in 3 machines and were compared with other 3 machines which were installed exclusively based in the installer experience. The software installed on the machines using a PDCA approach for testing, lead to the expected results. Scientific software installation should be tested during the installation and not as a final test. A methodology based on PDCA is recommended for testing scientific software.

关键词： Testing PDCA scientific software.

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Nutrimental diagnosis of avocado(Persea americana Mill.)“Haas”,soil fertility and water quality in Cuernavaca,Morelos,Mexico

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Agricultural Sciences 2013年第9期4卷 491-498页

作者： Hector Sotelo-Nava Oscar Gabriel Villegas-Torres martha Lilia Domínguez-patino Francisco Perdomo-Roldán Elías Hernández Castro Agustín Damián Nava Margarita Ramos García Facultad de Ciencias Agropecuarias Universidad Autónoma del Estado de MorelosCuernavacaMexico Facultad de Ciencias Químicas e Ingeniería Universidad Autónoma del Estado de MorelosCuernavacaMexico Unidad Academica de Ciencias Agropecuarias y Ambientales Universidad Autónoma de GuerreroIgualaMexico

In two contrasting agricultural ecohabitats (agrohabitats) in the avocado production area in the municipality of Cuernavaca, Morelos, an analysis of nutrimental status, soil fertility and water quality was conducted to measure soil fertility levels and to determine the nutrimental state of the trees. The “Hass” variety avocado groves studied had an average age of 8 years;the first grove was planted in an acrisol soil (1700 to 1900 meters above mean sea level [mamsl]);the second, in an andosol soil (1200 to 1700 mamsl). In each agrohabitat, tests were performed to determine the soil’s physical and chemical characteristics. The physical and chemical characteristics of the soils of this zone differ as do the nutrimental states of the avocado trees in the two agrohabitats. The trees showed excessive concentration of Ca, Fe, S, Z and Mg. The indices of Deviation from Optimal Percentage (DOP) in the two agrohabitats showed different nutrimental requirements;nevertheless, they were low and very near to zero, 14.218 and 13.350 respectively. The water used for the agricultural irrigation was low in salinity and sodium content and thus may be used for the agricultural irrigation without restrictions.

关键词： Avocado Nutrimental Imbalance Index Diagnosis Nutrimental Status Nutrients

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