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971.
Elka Fabiana Aparecida Almeida Janice Guedes de Carvalho Jussara Ellen Morais Frazão Nilma Portela Oliveira 《Journal of plant nutrition》2015,38(5):663-674
The objective of this work was to describe the nutrition deficiencies symptoms in calla lily (Zantedeschia aethiopica). Seedlings were maintained in complete nutrition solution and with omission of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), iron (Fe), boron (B), and manganese (Mn), totalizing 10 treatments. The first deficiencies symptoms appeared in plants cultivated in N omission, followed by treatments with omission of S, B, K, Fe, P, and Ca. Individual omissions of N and B prevented blooming, while S and K deficiencies resulted in production of small and greenish inflorescences with deformities. Reddish spots in leaves were observed in plants growing in solution with omission of P. Root development was affected either by omission of B or S. Death of the apical bud and formation of a “black center” in calla lily rhizome was caused by B deficiency. Nitrogen, B, and S are the most required nutrients for calla lily plants. The mineral composition of calla lily leaves is affected by nutritional deficiencies 相似文献
972.
Felix Francival Cardoso Alves de Oliveira Danilo Flademir dos Santos Ferrari Cibele Voigt Eduardo Luiz Pacheco Mauro Vasconcelos 《New Forests》2021,52(2):237-248
New Forests - The quality of forest seeds may be maintained in the course of storage for their use in the restoration of degraded areas and the conservation of genetic resources. In this sense,... 相似文献
973.
Amazonas Nino Tavares Forrester David I. Silva Carina Camargo de Almeida Danilo Roberti Alves Oliveira Rafael Silva Rodrigues Ricardo Ribeiro Brancalion Pedro H. S. 《New Forests》2021,52(5):807-828
New Forests - Mixed plantations composed of Eucalyptus intercropped with a high diversity of native tree species are a promising option for combining biodiversity recovery with wood production... 相似文献
974.
Maluta Nathalie Kristine Prado Lopes João Roberto Spotti Fiallo-Olivé Elvira Navas-Castillo Jesús Lourenção André Luiz 《Journal of pest science》2021,94(4):1265-1276
Journal of Pest Science - The whiteflies of the Bemisia tabaci (Genn.) complex (Hemiptera: Aleyrodidae) are serious agricultural pests that cause severe losses to vegetable, ornamental and fiber... 相似文献
975.
Lukas N Mueller Jody FC de Brouwer Jonas S Almeida Lucas J Stal João B Xavier 《BMC ecology》2006,6(1):1-15
Background
Confocal laser scanning microscopy (CLSM) is the method of choice to study interfacial biofilms and acquires time-resolved three-dimensional data of the biofilm structure. CLSM can be used in a multi-channel modus where the different channels map individual biofilm components. This communication presents a novel image quantification tool, PHLIP, for the quantitative analysis of large amounts of multichannel CLSM data in an automated way. PHLIP can be freely downloaded from . 相似文献976.
Dos Santos AO Britta EA Bianco EM Ueda-Nakamura T Filho BP Pereira RC Nakamura CV 《Marine drugs》2011,9(11):2369-2383
Natural marine products have shown an interesting array of diverse and novel chemical structures with potent biological activities. Our study reports the antiproliferative assays of crude extracts, fraction and pure compound (4R,9S,14S)-4α-acetoxy-9β,14α-dihydroxydolast-1(15),7-diene (1) obtained from brown alga Canistrocarpus cervicornis showing the antileishmanial activity. We showed that 1 had a dose-dependent activity during 72 h of treatment, exhibiting IC(50) of 2.0 μg/mL, 12.0 μg/mL, and 4.0 μg/mL for promastigote, axenic amastigote and intracellular amastigote forms of Leishmania amazonensis, respectively. A cytotoxicity assay showed that the action of the isolated compound 1 was 93.0 times less toxic to the macrophage than to the protozoan. Additionally, compound 1 induced ultrastructural changes, including extensive mitochondrial damage; decrease in Rh123 fluorescence, suggesting interference with the mitochondrial membrane potential; and lipid peroxidation in parasite cells. The use of 1 from C. cervicornis against L. amazonensis parasites might be of great interest as a future alternative to the development of new antileishmanial drugs. 相似文献
977.
Moreira MD Picanço MC Barbosa LC Guedes RN Barros EC Campos MR 《Pest management science》2007,63(6):615-621
This work aimed at identifying plant compounds with insecticidal activity against Diaphania hyalinata (L.) (Lepidoptera: Pyralidae), Musca domestica (L.) (Diptera: Muscidae), Periplaneta americana (L.) (Blattodea: Blattidae) and Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae). The plant species used were: basil (Ocimum selloi Benth.), rue (Ruta graveolens L.), lion's ear (Leonotis nepetaefolia L.), Jimson weed (Datura stramonium L.), 'baleeira' herb (Cordia verbenaceae L.), mint (Mentha piperita L.), wild balsam apple (Mormodica charantia L.) and billy goat weed (Ageratum conyzoides L.). Firstly, the insecticidal activities of hexane and ethanol plant extracts were evaluated against adults of R. dominica. Among them, only the hexane extract of A. conyzoides showed insecticidal activity. The hexane extract of this plant species was therefore fractionated by silica gel column chromatography to isolate and purify its bioactive chemical constituents. Three compounds were identified using IR spectra, (1)H NMR, (13)C NMR, HMBC and NOE after gel chromatography: 5,6,7,8,3', 4', 5'-heptamethoxyflavone, 5,6,7,8,3'-pentamethoxy-4', 5'-methylenedioxyflavone and coumarin. The complete assignment of (13)C NMR to 5,6,7,8,3'-pentamethoxy-4', 5'-methylenedioxyflavone was successfully made for the first time. 5,6,7,8,3'-Pentamethoxy-4', 5'-methylenedioxyflavone did not show any insecticidal activity against the four insect species tested. 5,6,7,8,3', 4', 5'-Heptamethoxyflavone showed low activity against D. hyalinata and R. dominica and was not toxic to M. domestica or P. americana. In contrast, coumarin showed insecticidal activity against all four insect pest species tested, with the following order of susceptibility: R. dominica < P. americana < D. hyalinata < M. domestica after 24 h exposure. 相似文献
978.
979.
de Sá Francielen Paola Gomes Erik Nunes de Almeida Maggioni Renata Wendling Ivar Helm Cristiane Vieira Sant’Anna-Santos Bruno Francisco Zuffellato-Ribas Katia Christina 《New Forests》2022,53(3):411-430
New Forests - In order to better understand the physiological and technical aspects of yerba mate vegetative propagation, the present study sought to evaluate the rhizogenic capacity of apical and... 相似文献
980.
de Souza Alonso Tales Arthur da Silva Dalila Lopes de Mello Prado Renato Soares Pedro Luiz Martins Tenesaca Luis Felipe Lata Ferreira Rivanildo Jnior 《Journal of pest science》2022,95(3):1453-1466
Journal of Pest Science - Silicon (Si) has a physical barrier effect on plant tissues, decreasing nematode infection in different crops. Notwithstanding, research on lettuce is lacking, especially... 相似文献