{"title":"Efectos alelopáticos de plantas de Cynodon dactylon L. en praderas naturales invadidas","authors":"D. Bresciano, Nicolás Glison, F. Lezama","doi":"10.25260/ea.22.32.2.0.1783","DOIUrl":null,"url":null,"abstract":"R������ . Con el objetivo de explorar las causas del éxito invasor de Cynodon dactylon en pastizales intersembrados con leguminosas y fertilizados con fósforo, se evaluó el efecto alelopático de los extractos acuosos de plantas de esta especie invasora —provenientes de un pastizal natural y de un pastizal con intersiembra con leguminosas y fertilización con fósforo— sobre las gramíneas nativas Paspalum notatum y Paspalum dilatatum . Debido a lo observado en pastizales fertilizados, donde la cobertura de C. dactylon aumenta, la de P. notatum decrece y P. dilatatum no es afectado, se esperaba que los aleloquímicos de la invasora provenientes de los pastizales intersembrados y fertilizados afectaran negativamente a P. notatum. Se evaluó el efecto de extractos acuosos de hojas frescas de C. dactylon de un pastizal natural y de un pastizal intersembrado y fertilizado con fósforo sobre la germinación, el crecimiento y el desarrollo de las dos gramíneas intersowing on two fertilized the notatum and P. dilatatum is not the allelochemicals from the intersowing and fertilized have a negative effect on P. notatum . The effect of aqueous extracts of C. dactylon on the germination, growth and development of the two studied. Contrary to our expectations, we detect inhibitory effects of the on germination and adult plants in but an increment of germination of both species irrigated with extracts from intersowing and fertilized grasslands. In contrast, in the responses were The results obtained indicate that aqueous from an allelopathic effect that the invasive success of C. the decrease of P. notatum in fertilized grasslands, although other approaches should be considered for its study.","PeriodicalId":53684,"journal":{"name":"Ecologia Austral","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecologia Austral","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.25260/ea.22.32.2.0.1783","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Environmental Science","Score":null,"Total":0}
引用次数: 1
Abstract
R������ . Con el objetivo de explorar las causas del éxito invasor de Cynodon dactylon en pastizales intersembrados con leguminosas y fertilizados con fósforo, se evaluó el efecto alelopático de los extractos acuosos de plantas de esta especie invasora —provenientes de un pastizal natural y de un pastizal con intersiembra con leguminosas y fertilización con fósforo— sobre las gramíneas nativas Paspalum notatum y Paspalum dilatatum . Debido a lo observado en pastizales fertilizados, donde la cobertura de C. dactylon aumenta, la de P. notatum decrece y P. dilatatum no es afectado, se esperaba que los aleloquímicos de la invasora provenientes de los pastizales intersembrados y fertilizados afectaran negativamente a P. notatum. Se evaluó el efecto de extractos acuosos de hojas frescas de C. dactylon de un pastizal natural y de un pastizal intersembrado y fertilizado con fósforo sobre la germinación, el crecimiento y el desarrollo de las dos gramíneas intersowing on two fertilized the notatum and P. dilatatum is not the allelochemicals from the intersowing and fertilized have a negative effect on P. notatum . The effect of aqueous extracts of C. dactylon on the germination, growth and development of the two studied. Contrary to our expectations, we detect inhibitory effects of the on germination and adult plants in but an increment of germination of both species irrigated with extracts from intersowing and fertilized grasslands. In contrast, in the responses were The results obtained indicate that aqueous from an allelopathic effect that the invasive success of C. the decrease of P. notatum in fertilized grasslands, although other approaches should be considered for its study.
期刊介绍:
Ecología Austral is the scientific journal published by the Ecological Society of Argentina, that is distributed for free among regular members. It publishes original scientific articles in any branch of the environmental sciences. The articles, in Spanish, English or Portuguese, can be results of original and unpublished scientific research, reviews and updates that summarize the current state of the art on a certain subject, points of view on theory and/or methods in ecology, and teaching aids to be used as supporting reading for students. Manuscripts are peer reviewed by two experts and the revision process is completed within three months after submission and published between two and six month after final acceptance.