Plant
Mostrando 25-36 de 19306 artigos, teses e dissertações.
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25. Production and quality of strawberry plants produced from different nutrient solutions in soilless cultivation 1
ABSTRACT The production of strawberry seedlings in a soilless cultivation system can be an alternative for the production of seedlings of high physiological and sanitary quality. The objective of this study was to evaluate the influence of the use of different nutrient solutions in mother plants on the production and quality of strawberry seedlings of the Ar
Revista Ceres. Publicado em: 2022
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26. Genetic diversity and correlation network approach on cotton genotypes in southern of Minas Gerais
ABSTRACT The cultivation of Cotton (Gossypium hirsutum) is trending in an upward expansion at Minas Gerais state, Brazil. Due this growth, the breeding program has been demanded for the knowledge about the genetic diversity and correlation between morpho-agronomic traits, to start interesting crosses. The objective of this work was to study the genetic diver
Revista Ceres. Publicado em: 2022
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27. Control of shoot-tip necrosis during Argylia radiata in vitro multiplication
Resumo Argylia radiata é uma planta herbácea perene nativa do norte do Chile e uma espécie representativa do “Deserto Florido”. Por suas flores vistosas e outras características morfológicas, A. radiata possui grande potencial ornamental. Em trabalhos anteriores, uma descrição morfoanatômica profunda foi feita, mas os protocolos de micropropagaç
Ornamental Horticulture. Publicado em: 2022
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28. Extracts of the Native Brazilian Tree Garcinia gardneriana Inhibit Urediniospore Germination of Coffee Leaf Rust Fungus
The fungal Hemileia vastatrix is the causal agent of coffee leaf rust, one of the worst and devastating disease in coffee cultures worldwide. As a result of our research on natural products for the development of novel agrochemicals, we found that the hexane extract from leaves of the Brazilian medicinal plant Garcinia gardneriana, at 500 μg mL-1, inhibited
Journal of the Brazilian Chemical Society. Publicado em: 2022
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29. ARTEMISININA E DERIVADOS: DESCOBERTA, ESTRATÉGIAS SINTÉTICAS E OBTENÇÃO INDUSTRIAL
Artemisinin, a natural sesquiterpene isolated from the Artemisia annua L. plant, represents a remarkable achievement in the treatment against malaria. Since its discovery in the 1970’s, researchers readily started synthesizing this complex natural product containing an unusual endoperoxide fragment. Despite various total syntheses reported, only in the las
Química Nova. Publicado em: 2022
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30. Ornamental plant breeding: entering a new era?
Resumo No último século, o melhoramento de plantas de culturas e de ornamentais tornou-se um negócio importante. Os princípios de herança de características de Mendel lançaram as bases da genética moderna de hoje. Embora os cruzamentos intra e interespecífico, a duplicação de cromossomos e o cruzamento de mutações ainda constituam a base do melh
Ornamental Horticulture. Publicado em: 2022
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31. Royleanine A, an Antitumor Dihydro-β-agarofuran Sesquiterpene Pyridine Alkaloid from Maytenus royleanus
Genus Maytenus (Celastraceae) has proved to be a good source of new bioactive sesquiterpene pyridine alkaloids. Maytenus royleanus is a medicinal plant used in folk medicine for different ailments in a variety of ways around the world. Investigation of the roots of M. royleanus resulted in the isolation of an undescribed antitumor sesquiterpene pyridine alka
Journal of the Brazilian Chemical Society. Publicado em: 2022
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32. Physical and chemical characteristics and analysis of plant substrate
Resumo O cultivo em ambiente protegido e recipiente culminou com a necessidade da utilização de substratos com características fisico-químicas específicas; assumindo um papel fundamental no cultivo de plantas hortícolas. Assim, o objetivo foi descrever as principais característica fisico-químicas de substratos e as principais metodologias para a sua
Ornamental Horticulture. Publicado em: 2022
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33. Growth dynamics of container seedlings of Eucalyptus grandis x Eucalyptus urophylla and Hymenaea courbaril L.
ABSTRACT Growth analysis (GA) is used to quantify plant development based on morphophysiological changes. GA is a practical tool to evaluate nursery techniques to make them more efficient. The objective of this essay was to quantity measure morphophysiological growth variables of Eucalyptus grandis x Eucalyptus urophylla and Hymenaea courbaril (jatoba) conta
Revista Ceres. Publicado em: 2022
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34. FUZZY MODELING OF THE EFFECT OF IRRIGATION DEPTHS ON BEET CULTIVARS
ABSTRACT The objective of this study was to develop a Fuzzy Rule-Based System (FRBS) for the mathematically modeling of the irrigation level effect on beet cultivars ( Beta vulgaris L.). From an agronomic experiment carried out in a protected environment (greenhouse), it was defined as input variables, for each cultivar, the irrigation levels (depths of 25,
Engenharia Agrícola. Publicado em: 2022
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35. Leishmanicidal and Antimicrobial Activities of 4-Quinolone Alkaloids from Stems of the Medicinal Plant Waltheria indica (Malvaceae) and Their Chemotaxonomic Significance
A chemical investigation of the stem of Waltheria indica (Malvaceae) yielded twelve 4-quinolone alkaloids, which were primarily waltheriones. These were waltherione A (1), waltherione B (2), waltherione C (3), waltherione G (4), waltherione H (5), waltherione J (6), waltherione L (7), waltherione P (8), chamaedrone (9), 8-deoxy-antidesmone (10), antidesmone
Journal of the Brazilian Chemical Society. Publicado em: 2022
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36. Allometric models for estimating the leaf area of lisianthus (Eustoma grandiflorum) using a non-destructive method
ABSTRACT Lisianthus (Eustoma grandiflorum) is a cut flower grown due to the wide diversity of colors and longevity in the post-harvest. The leaf area measurement is fundamental in plants because the leaves are directly related to several processes such as transpiration, radiation interception and CO2 fixation that enable the plant to grow. The objective of t
Revista Ceres. Publicado em: 2022