Embora estudos tenham demonstrado a eficácia da aplicação de bioestimulantes em sementes, alguns resultados são contraditórios. Portanto, são necessárias mais pesquisas para verificar a adequação dos métodos utilizados e o momento da aplicação desses produtos. As cucurbitáceas são importantes no agronegócio de hortaliças do Brasil. Além do valor econômico e alimentar, o cultivo de cucurbitáceas gera empregos diretos e indiretos, visto que demanda mão de obra em toda a cadeia produtiva. Com base nisso, este trabalho teve por finalidade avaliar o efeito da aplicação do bioestimulante Stimulate® no desenvolvimento inicial de plântulas de Luffa operculata (L.) Cogniaux. Na embebição foram adotados os seguintes tratamentos: 0,0 (controle), 1,0; 2,0; 3,0 e 4,0 mL de Stimulate®/Litro de água destilada. As variáveis analisadas foram: primeira contagem de emergência, índice de velocidade de emergência, emergência, tempo médio de emergência, incerteza de emergência, número de folhas e comprimento de plântulas. Foi utilizado o delineamento experimental inteiramente casualizado, com quatro repetições de 25 sementes por tratamento. Os dados foram submetidos a análise de variância, aplicou-se regressão, uma vez que o tratamento é um fator quantitativo. As doses situadas entre 1,77 a 3 mL.L-1 de bioestimulante podem ser recomendadas para sementes de L. operculata, pois promoveram melhorias em todas as variáveis analisadas.
Enterolobium contortisiliquum (Vell.) Morong a tree commonly known as anglerfish, monkey ear and timbaúva. Due to its wood quality, this tree species is widely used in naval and civil constructions, toys and furniture frames, and can also be used for urban afforestation and restoration of degraded areas. The objective of this work was to standardize the best temperature conditions for conducting the germination tests of E. contortisiliquum seeds under laboratory conditions, considering the fact that the seeds come from coastal tropical Brazil, and to evaluate the desiccation tolerance. The experiments were carried out at the Plant Propagation Laboratory of the Agricultural Engineering and Sciences Campus (CECA) of the Federal University of Alagoas (UFAL), located in the municipality of Rio Largo, Alagoas, Brazil. The design of the experiment was fully randomized, with four repetitions of 25 seeds per treatment. In test I: The newly harvested seeds were subjected to constant temperatures of 5, 10, 15, 20, 25, 30, 35 and 40ºC and alternating temperatures of 20-30ºC, with an eight-hour photoperiod, simulated by four fluorescent lamps 20W daylight type. In trial II: The seeds were divided into two lots. The first was the control (initial moisture content). The second was subjected to slow drying on silica gel. A constant temperature of 30ºC is recommended for the germination and vigor test of E. contortisiliquum seeds. The critical means water content for seeds of this species is below 5%.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.