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1.
Braz J Biol ; 84: e281235, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38656077

RESUMEN

The increase in prices of fertilizers, energy and other materials necessary for the industry triggered a global economic crisis. Reason that was investigated on the biological and chemical characteristics in relation to the yield of radish nourished with humus from plant residue. The objective was to determine the appropriate dose of humus to obtain greater yield and its relationship with the chemical and biological characteristics of the radish. It is based on applied methodology with an experimental approach; Therefore, the Completely Random Block Design model was used, which consisted of 3 blocks and 5 treatments that were T1 with 0, T2 with 4, T3 with 6, T4 with 8 and T5 with 10 t/ha of humus and They applied 15 days after sowing. The physical characteristics of the radish were evaluated and processed using analysis of variance and Duncan. Concentration of elements in leaves and stomatal density were also analyzed. It was determined that T5 stood out in total plant length with 28.95 cm, plant weight with 76.87 g, equatorial diameter with 4,404 cm and commercial yield with 20,296 t/ha. Nitrogen consumption in relation to yield with 247.44 kg/ha. Stomatal density 459 stomata/mm2 and profitability with 150% and nutrient concentration in leaves highlighted T4 with N, K, Ca, Mg, Mo and Zn. It concludes that T5 stood out with 20,296 t/ha, which differed by 26.04% in relation to the control (T1) with 15,011 t/ha. Therefore, this dose added nutrients to the soil that improved the availability for plant absorption and this influenced the concentration of nutrients in leaves such as N, P and Fe and stomatal density with 459 stomata/mm2, which had a response in good development, strengthening against environmental stress and therefore greater performance.


Asunto(s)
Fertilizantes , Raphanus , Raphanus/química , Raphanus/crecimiento & desarrollo , Fertilizantes/análisis , Sustancias Húmicas/análisis , Hojas de la Planta/química , Nitrógeno/análisis , Nitrógeno/metabolismo , Biomasa
2.
Braz J Biol ; 83: e275698, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37937631

RESUMEN

The pandemic and the geopolitical conflict between Russia and Ukraine are events that have caused economic instability in Peru. Reason that was investigated on the analysis of the biological and chemical characteristics of cabbage fed with compost based on sugarcane residues. The objective was to analyze the physical, chemical and biological characteristics of cabbage from the adequate dose of compost based on sugarcane residues and distance between plants. It is based on the methodology applied with an experimental approach, for which the Completely Random Block Design with a 4x 2 factorial arrangement was used, which consisted of 3 blocks and 8 treatments that were the combination: F1 with 0, F2 with 8, T3 with 10 and F4 with 12 t/ha and spacing (D1) with 0.30 m between plants and 0.60 m between rows and (D2) with 0.35 m between plants and 0.60 m between rows. The physical characteristics of cabbage were evaluated and processed by analysis of variance, nutrient concentrations in leaves and stomatal density were analyzed. The results determined that T7 stood out in plant height with 41.88 cm, yield with 26.76 tn/ha and T6 in root length with 20.22 cm. In chemical analysis of leaves T1 stood out in nitrogen, phosphorus, potassium and T4 in calcium, magnesium and sulfur. In T7 stomata density with 977 stomata/mm2. It concludes that at an adequate dose and greater distance that T7 stands out in the concentration of nutrients that are within normal values and high density of stomata; Therefore, these characteristics influenced the optimal biochemical reactions, which obtained good development and yield that differed at 51.39% and 32.17% with respect to the controls T1 and T5.


Asunto(s)
Brassica , Compostaje , Saccharum , Brassica/química , Federación de Rusia
3.
Braz J Biol ; 83: e271809, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37222373

RESUMEN

The 2030 Sustainable Development Goals of the United Nations include a strong emphasis on ending hunger worldwide. According to the 2019 Global Food Security Index, while 88% of countries claim there is sufficient food supply in their country, the sad reality is that 1 in 3 countries is facing insufficient availability of food supply, which means that in those countries, more than 10% of the population is malnourished. Since nutrition is crucial to leading a healthy life and satisfying food security needs, several governments have turned to national nutrition surveys to gauge the extent of malnutrition in their populations. Plants are able to grow, develop, and store nutrients by photosynthesis, which convert light into chemical energy through cell redox regulatory networks. A photosynthesis system's electron flow may be adjusted to accommodate varying light and environmental circumstances. Many techniques exist for controlling the flow of electrons emitted during light processes in order to save or waste energy. The two protein molecules TROL and flavoenzyme ferredoxin (oxidoreductase+NADP) (FNR) interact dynamically to form an excellent molecular switch capable of splitting electrons from the photosystem. The TROL-FNR bifurcation may be limited by either generating NADPH or preventing reactive oxygen species from propagating. TROL-based genome editing is an experimental method for enhancing plant stress and defensive responses, efficiency, and ultimately agricultural production.


Asunto(s)
Agricultura , NADP
4.
Braz. j. biol ; 83: e271809, 2023. ilus
Artículo en Inglés | VETINDEX | ID: biblio-1439626

RESUMEN

The 2030 Sustainable Development Goals of the United Nations include a strong emphasis on ending hunger worldwide. According to the 2019 Global Food Security Index, while 88% of countries claim there is sufficient food supply in their country, the sad reality is that 1 in 3 countries is facing insufficient availability of food supply, which means that in those countries, more than 10% of the population is malnourished. Since nutrition is crucial to leading a healthy life and satisfying food security needs, several governments have turned to national nutrition surveys to gauge the extent of malnutrition in their populations. Plants are able to grow, develop, and store nutrients by photosynthesis, which convert light into chemical energy through cell redox regulatory networks. A photosynthesis system's electron flow may be adjusted to accommodate varying light and environmental circumstances. Many techniques exist for controlling the flow of electrons emitted during light processes in order to save or waste energy. The two protein molecules TROL and flavoenzyme ferredoxin (oxidoreductase+NADP) (FNR) interact dynamically to form an excellent molecular switch capable of splitting electrons from the photosystem. The TROL-FNR bifurcation may be limited by either generating NADPH or preventing reactive oxygen species from propagating. TROL-based genome editing is an experimental method for enhancing plant stress and defensive responses, efficiency, and ultimately agricultural production.


Os Objetivos de Desenvolvimento Sustentável de 2030 da Organização das Nações Unidas incluem uma forte ênfase em acabar com a fome em todo o mundo. De acordo com o Índice Global de Segurança Alimentar de 2019, enquanto 88% dos países afirmam que há abastecimento alimentar suficiente em seu país, a triste realidade é que 1 em cada 3 países enfrenta disponibilidade insuficiente de alimentos, o que significa que, nesses países, mais de 10% da população está desnutrida. Uma vez que a nutrição é crucial para levar uma vida saudável e satisfazer as necessidades de segurança alimentar, vários governos recorreram a pesquisas nacionais de nutrição para avaliar a extensão da desnutrição em suas populações. As plantas são capazes de crescer, desenvolver e armazenar nutrientes pela fotossíntese, que converte luz em energia química por meio de redes reguladoras redox celulares. O fluxo de elétrons de um sistema de fotossíntese pode ser ajustado para acomodar luz variável e circunstâncias ambientais. Existem muitas técnicas para controlar o fluxo de elétrons emitidos durante os processos de luz, a fim de economizar ou desperdiçar energia. As duas moléculas de proteína TROL e a flavoenzima ferredoxina (oxidorredutase+NADP) (FNR) interagem dinamicamente para formar um excelente interruptor molecular capaz de separar elétrons do fotossistema. A bifurcação TROL-FNR pode ser limitada, gerando NADPH ou impedindo a propagação de espécies reativas de oxigênio. A edição do genoma baseada em TROL é um método experimental para aumentar o estresse da planta, as respostas defensivas, a eficiência e, finalmente, a produção agrícola.


Asunto(s)
Fotosíntesis , Tecnología , Productos Agrícolas
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