TITLE:
Allelopathic Potential of the Aqueous Extract of Raphanus sativus L. on the Germination of Beans and Corn Seeds
AUTHORS:
Marli de Moraes Gomes, Douglas Junior Bertoncelli, Guilherme Augusto Cito Alves, Gustavo Henrique Freiria, Felipe Favoretto Furlan, Guilherme Renato Gomes, Vitor Rampazzo Favoretto, Helio Fernandes Ibanhes Neto, Mônica Satie Omura, Jose Roberto Pinto de Souza
KEYWORDS:
Allelopathic, Raphanus sativus L., Phaseolus vulgaris L., Zea mays L.
JOURNAL NAME:
Open Access Library Journal,
Vol.4 No.5,
May
16,
2017
ABSTRACT: The plants synthetize a
big quantity of chemically diverse compounds, which discharged into the
environment influence in a decisive manner in the species dynamics that form
the agroecosystems, phenomenon denominated allelopathy. The study had the aim of the evaluation of allelopathic effects of turnip
aqueous extract under beans and corn seeds. The experimental design was
completely randomized with five treatments (concentrations of 0%, 25%, 50%, 75% and 100% of raw extract)
and four repetitions. The
gross extract was prepared through the mixture of 50 g of turnips aerial part
fresh mass in 450 mL of cold distilled water and then blended in a blender. The
mixture was kept in rest in absence of light for 24 hours at 25℃ for posterior
filtration and dilution of concentrations. They were evaluated the percentage of germination and
the germination velocity index in Germitest paper rolls dampened with the
extract or distilled water, according to the treatments and each roll was
distributed 50 seeds, kept in germination chamber at 25℃ ± 3℃ and 12 hours of photoperiod. At the end of
seven (corn) and nine (beans) days, the root length (RL) and the aerial part
(APL) were evaluated, and after drying in a hothouse (50℃), the dry mass of root system (DMR) and
aerial part (DMAP) was determined, by the measure of 20 plantlets of each
treatment. The results were submitted to an analysis of variance by F test and,
when there was statistical significance, it was made the regression analysis test. For the
realization of the statistical analysis, the ASSISTAT software was used. The
turnip aqueous extract affected negatively the germination and initial
development of bean and corn plantlets.