Leaf-surface characterization and the effects of the herbicide saflufenacil on the leaves of weeds

Alves, Raysa M.; Júnior, Edmundo Inácio; Monquero, Patrícia Andréa; Meneghin, Silvana P.; Hirata, Andréia Cristina Silva

doi:10.5039/agraria.v9i4a4731

Cited by 8 publications

(7 citation statements)

References 12 publications

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“…The micromorphometric analyses of the leaves regarding stomatal density index of the adaxial and abaxial surfaces and thickness of the adaxial and abaxial epidermis and palisade and spongy parenchyma were performed with the ANATI QUANTI® software (Aguiar et al, 2007). To obtain the stomatal density and index, the epidermisimprinting technique with cyanoacrylate was used, as described by Alves et al (2014).…”

Section: Methodsmentioning

confidence: 99%

Plant biometric characterization and leaf micromorphometry of Talinum triangulare (Jacq.) Willd cultivated under shade

et al. 2018

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Talinum triangulare (Jacq.) Willd, known as Ceylon spinach, Surinam purslane, or waterleaf, is cultivated for medicinal and food purposes. Among environmental factors, light is an important regulator of primary production, contributing to plant growth. However, the success of each plant species depends on its morphoanatomical responses to light. The aim of this study was to determine whether T. triangulare leaf micromorphometry is affected when grown in full sun and under shade, and if so, which plant biometric variables are affected. T. triangulare cultivation was tested in beds arranged in blocks under shade levels of 0, 18, 30, and 50%. Each bed was considered a basic experimental unit, totaling four replications per treatment. Plant height, stem diameter, leaf area, leaf fresh weight, stem fresh weight, specific leaf area, leaf area ratio, abaxial epidermis, and mesophyll thickness were higher as shade levels increased. However, there was a decrease in the number of leaves, root to shoot ratio, stomatal density on abaxial and adaxial surfaces, and palisade parenchyma thickness. Nevertheless, root length, leaf and stem dry weights, leaf weight ratio, adaxial stomatal index, adaxial epidermis, and spongy parenchyma thickness remained constant. Plants responded differently to shade, with morphological and anatomical changes, suggesting a phenotypic plasticity and raising the possibility of being grown both in shaded environments and in full sunlight.

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Section: Methodsmentioning

confidence: 99%

Plant biometric characterization and leaf micromorphometry of Talinum triangulare (Jacq.) Willd cultivated under shade

et al. 2018

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“…Essa maior espessura foliar pode representar uma barreira física para absorção de herbicidas resultando em menores efeitos fitotóxicos a essa variedade, pois dessa forma uma menor quantidade de herbicida acaba sendo efetivamente absorvida pela planta e consequentemente desencadeando efeito fitotóxicos menos expressivos. Alves et al (2014) relataram que a superfície foliar das plantas, através da presença de célula epidérmicas diferenciadas e/ou presença de tricomas podem afetar a dinâmica de herbicidas pós-emergentes diminuindo sua absorção e os efeitos deletérios da deriva sobre plantas sensíveis, como por exemplo a alface.…”

Section: Resultsunclassified

Efeitos Fitotóxicos Sobre a Cultura Do Alface Ocasionados Pela Deriva Simulada De Herbicidas Utilizados No Milho

Silva

Nicolle

Ribeiro

et al. 2017

REP

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A deriva de herbicidas através de pulverizações pode resultar no transporte desses produtos da cultura, onde inicialmente foi posicionado, até áreas não alvo, resultando em danos na produtividade e morfologia de culturas sensíveis. Sendo assim o objetivo deste trabalho foi avaliar os efeitos causados pela deriva simulada de herbicidas utilizados na cultura do milho sobre a alface brunela (Lactuca sativa var. brunela) e sobre a alface crespa (Lactuca sativa var. Crispa). O experimento foi realizado em casa de vegetação com delineamento inteiramente casualizado com quatro repetições, em esquema fatorial 10x4, sendo dez herbicidas recomendados para a cultura do milho (bentazon, ametrina, amicarbazone, 2,4D, atrazine, mesotrione, atrazine + cimazine, trifluralina, isoxaflutole e chlorimuron) e quatro doses 0D, 0,25D, 0,5D, 1D; sendo D a dose comercial. Aos 7, 10 e 15 dias após a aplicação (DAT) dos herbicidas, foram realizadas avaliações visuais de fitotoxicidade. Aos 15 DAT foi efetuada a massa seca da parte aérea. Para a variedade brunela o herbicida bentazon também não ocasionou efeitos deletérios no desenvolvimento das plantas de alface no que tange a fitoxicidade. Na variedade de alface crespa a exposição das plantas de alface aos herbicidas 2,4 D, mesotrione e isoxaflutole resultaram em efeitos fitotóxicos severos. Para a variedade brunela, para todos os herbicidas a dose de 0,25 D resultou em danos pouco expressivos e os herbicidas 2,4 D e mesotrione, foram os que resultaram em efeitos mais severos. Na variedade crespa os danos fitotóxicos foram mais severos que na variedade brunela.

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“…Some researches relative to leaf blade of Luffa species mentioned only the presence of non-glandular trichomes as in L. acutangular (L.) Roxb., L. echinate Roxb., L. cylindrica 38 and L. aegyptiaca. 39 Alves et al 42 described non-glandular and glandular trichomes in L. aegyptiaca and Rus et al 33 in B. alba. Thus, in this work is possible to note the first description about the presence of non-glandular and glandular trichomes in L. cylindrica.…”

Section: Discussion/ Conclusionmentioning

confidence: 99%

“…Thus, in this work is possible to note the first description about the presence of non-glandular and glandular trichomes in L. cylindrica. Alves et al 42 showed that L. aegyptiaca also has an amphistomatic leaf blade, with anomocytic stomata. However, a useful character to distinguish it from L. cylindrica is that L. aegyptiaca presents collenchyma only on the adaxial face of the midrib, while L. cylindrica showed collenchyma in both faces.…”

Section: Discussion/ Conclusionmentioning

confidence: 99%

Anatomical and Histochemical Characterization of Leaves of Luffa cylindrica (L.) M. Roem

Vieira¹,

Sá²,

Randau³

2019

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The Cucurbitaceae family have 134 genera and encompass over 965 species. The principal genera about to the family are Bryonopsis, Citrullus, Corallocarpus, Cucumis, Cucurbita, Lagenaria, Luffa, Momordica and Trichosanthes and they can be cultivated in the tropics, subtropics, arid and temperate regions. 1-3 The cucurbits are herbaceous. The most species having large leaves, the foliage is whole or in deep lobes and they can be climbing or creeping plants. The flowers are having differences sexes and a large inferior ovary. After fertilization, the ovary develops into a fruit processing hard exocarp, fleshy mesocarp and endocarp. 4-5 Many cucurbits' fruits have been an ingredient for the culinary and are eaten when immature or mature by salads, sweets, desserts or pickled. 6-7 Besides being food, some species are often used in popular medicine throughout the world, such as in America, 8-9 Africa 10-11 and Asia. 12-13 The principal parts of the plant used to treat icterus, gastric diseases, diabetes, sinusitis, lung diseases, fever, cancer, inflammation, skin infections, pain, among others, are roots, leaves, fruits and seeds. 8-13 Many plants of the Cucurbitaceae family contain cucurbitanes, which is a type of triterpene. 14 Brazil has some cucurbit genera. Around 28 genera and 160 species occur in all states in the country. Among them, Luffa is a genus it has had two species: Luffa cylindrica (L.) M. Roem. moreover, Luffa operculata Anatomical and Histochemical Characterization of Leaves of Luffa cylindrica (L.) M. Roem ABSTRACT Background: Luffa cylindrica (L.) M. Roem. (Cucurbitaceae) is an herbaceous plant used for food as compose salads and do sweets and also used in traditional medicine as treat parasitic infections and intestinal diseases. Although this information, there are not many relates about anatomic characters for use in your quality control. Objective: The aim was investigating the anatomical characters of petiole and leaf blade and characterizing the metabolites in the leaf blade of L. cylindrica. Materials and Methods: Semipermanent histological slides were prepared for analysis of petiole and leaf blade in optical microscopy. Histochemical tests were also performed in the leaf blade. Results: The anatomical study revealed information about the type of trichomes, cuticle, vascular bundles and arrangement of the tissues that determine the botanical identity of this species. It was also identifying, for the first time, the presence of two types of trichomes in both of leaf blades faces. The histochemistry allowed determining which metabolites are in the leaf blade and also their location. Conclusion: The study described new characters for L. cylindrica and the results provide support to quality control of the species.

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Leaf-surface characterization and the effects of the herbicide saflufenacil on the leaves of weeds

Cited by 8 publications

References 12 publications

Plant biometric characterization and leaf micromorphometry of Talinum triangulare (Jacq.) Willd cultivated under shade

Plant biometric characterization and leaf micromorphometry of Talinum triangulare (Jacq.) Willd cultivated under shade

Efeitos Fitotóxicos Sobre a Cultura Do Alface Ocasionados Pela Deriva Simulada De Herbicidas Utilizados No Milho

Anatomical and Histochemical Characterization of Leaves of Luffa cylindrica (L.) M. Roem

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