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Multielemental Microanalysis in Root and Leaves, Growth and Biomass in Tomato Seedling in Response to Ca Levels and Induction of Stress: Non-Destructive Spectroscopy

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Open Journal of Applied Sciences 2021年第6期11卷 672-683页

作者： Omar A. Pérez-Dueñas fanny hernández-mendoza Víctor García-Gaytán Soledad García-Morales EI Colegio de Michoacán (LADiPA) La Piedad Michoacán Mexico Colegio de Postgraduados Campus Montecillo Texcoco Estado de México México Biotecnología Vegetal CONACYT-Centro de Investigación y Asistencia en Tecnología y Dise&#241 o del Estado de Jalisco México

Tomatoes are one of the main vegetables in the food industry that are consumed fresh and processed. A multi-element microanalysis was performed with the use of scanning electron microscopy (SEM) in conjunction with energy dispersion spectroscopy (EDS), to see changes in nutrient concentration in roots and leaves, as well as fresh and dry biomass in tomato seedlings. Exposed in nutrient solution (NS) with different levels of Ca (control, 25, 50 and 100 mM). The root was put in also to H2O2 for 8 hours to observe the changes that occurred. It was observed that NS with 100 mM Ca in fresh stem biomass and fresh leaf biomass increased by 25% and 38% compared to the control. It was observed that the NS with 100 and 50 mM of Ca, the content of Ca and Cl in foliar tissue increased by 34.50% and 13.15% compared to the control. Treatment with H2O2 and with 25 and 100 mM of Ca at NS increased the height of the seedling and fresh leaf bio-mass by 19.75% and 60.80% compared to the control. The treatment with H2O2 and with the different levels of Ca in the NS increased the content of C, P, K, Ca and Cl in the leaf tissue. Only S was significant for the control. Treatment with H2O2 and 100 mM Ca in the NS increased Ca and Mg by 83.48% and 40.47% for the root compared to the control. The K and Cl in the root was higher in the control treatment by 47.61% and 55% respect to the highest level of Ca. It is concluded that multielemental microanalysis is a powerful, non-destructive, fast and accurate tool for the determination of plant nutrients. Also, it is applicable for the areas like horticulture, physiology and agronomy.

关键词： Microanalysis Nutrient Solution Calcium Root Leaves Stem

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The World’s Agricultural Resources Is It Possible to Improve It Due to Heat and Drought Cases?

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Journal of Agricultural Chemistry and Environment 2021年第4期10卷 447-457页

作者： C.-G. Anónimo Víctor García-Gaytán fanny hernández-mendoza Hadiseh Daneshvar Alan G. Yañez-Olvera Laboratorio de Análisis y Diagnóstico del Patrimonio-LADIPA El Colegio de Michoacán La Piedad de Cavadas Mexico México Colegio de Postgraduados Campus Montecillo Texcoco México Collage of Agriculture and Natural Resource University of Tehran Karaj Alborz Iran Laboratorio Nacional de Genómica para la Biodiversidad Unidad de Genómica Avanzada (Langebio) Cinvestav Irapuato México

Competition for natural resources will affect our ability to produce food. As population grows so does food demand, which leads to enormous pressure on the supply system. Despite the threat that climate change represents, is possible to produce more food as is evidenced, for example, the worldwide increases in the average yield per year of corn, rice wheat, and soybean. However, stresses such as temperature may have a negative impact on productivity. World grain yields decrease for each degree of increase in minimum global temperature. In addition, temperature increase induces other events such as the incidence of pests and diseases and damage to germplasm. This work focuses on the perspective of food production in the world, addressed from five fundamental aspects: 2) Temperature in crop yield. 3) Stress factors cause financial losses. 4) Water use in Agriculture. 5) The urge to increase plant productivity against climate change, and finally 6) Plant diversity and conservation.

关键词： Food Yield Temperature Drought Heat Germplasm

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Solanum lycopersicum: Novelties for Climate Factors and Its Agronomic Management for High Yields

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World Journal of Engineering and Technology 2022年第3期10卷 605-612页

作者： Víctor García-Gaytán Soledad García-Morales Ana V. Coria-Téllez fanny hernández-mendoza Janet María León-Morales El Colegio de Michoacán La Piedad México Profesor Investigador Mejoramiento Integral de Plantas a Través de la Genética y Nutrición Vegetal La Piedad México (CONACYT) Centro de Investigación y Asistencia en Tecnología y Diseñ o del Estado de Jalisco Zapopan México Coordinación Académica Región Altiplano Oeste Universidad Autónoma de San Luis Potosí San Luis Potosí México

The intensive production of vegetables such as tomatoes depends on various strategies to achieve high *** of this manuscript is to provide scientific and technological strategies for the intensive production of tomato or other vegetables in mega-production factories. However, with the advancement of knowledge, new improvements in the strategies will be incorporated. We have carried out research related to growth and yield variables in S. Lycopersicum. From this research we have worked on the intensive production of this noble vegetable at an industrial level. The results obtained are improvements in the production system. The improvements include the selection of the appropriate variety, germination and development of seedlings in a certified nursery. Trans-plantation in soil or hydroponics. The conditions of nutrient applications from the irrigation head system. The ventilation system and monitoring of climatic factors both day and night (temperature and relative humidity). Monitoring of macro- and micronutrients in the plant system, including Ca, K, Fe, and Zn. Soil fertility analyzes should include: primary and secondary macronutrients (ppm), organic matter (OM), EC, pH, bulk density (BD), and cation exchange capacity (CEC). The nutritional diagnosis to confirm ranges of sufficiency. As a tool in plant nutrition programs, foliar application can include biostimulants and growth regulators. The foregoing can be considered strategies for the integral management of the tomato crop.

关键词： Integrated Management Climate Factors Plant Nutrition Growth Regulators

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Restoration-Focused Germination and Development of Five Central Mexican Oak Species

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Open Journal of Forestry 2014年第3期4卷 171-180页

作者： Alfonso-Corrado Cecilia Campos Jorge Eduardo mendoza Ana Aguirre-Hidalgo Victor Valencia-Davalos Susana González-Adame Gabriel Wooden Garvey fanny Clark-Tapia Ricardo Herbario de la Facultad de Ciencias (FCME) Departamento de Biología Comparada UNAM Ciudad Universitaria México D.F. México Instituto de Ecología UNAM Ciudad Universitaria México D.F. México Instituto de Estudios Ambientales Universidad de la Sierra Juárez Oaxaca México Laboratorio de Bioquímica Molecular-Unidad de Biotecnología y Prototipos (UBIPRO) Fes–IZTACALA Tlalnepantla México Nova Universitas Carretera a Puerto ángel Km. 34.5 Ocotlán de Morelos México

In the genus Quercus, regeneration by seed is reduced or absent in many species. The naturally protected area of the Sierra Fria, in Aguascalientes, Mexico contains forests that are fragmented and have been degraded due to human activities. The oak populations in this region demonstrate a very restricted sexual regeneration, with five of the most abundant species of this genus: Quercuseduardii, Q. grisea, Q. potosina, Q. resinosa and Q. sideroxyla presenting low seedling recruitment. In this study we evaluated seed viability and the effect of seed size on the germination, growth and survival of the trees, with the aim of recommending restoration and conservation program management actions for these oak species. In 2005 and 2006, 5000 acorns of each species were collected and viability, germination and growth experiments were performed in the laboratory and greenhouse. We found high seed viability and significant size effect

关键词： Acorns Oak Regeneration Seed Size Seed Viability

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