In July 2013, symptoms of stem rot were observed in the Dracaena sanderiana cuttings in greenhouses of Mahallat County, Markazi Province, Iran. The symptoms first appeared as severe wilting. Later, leaves became brown and necrotic. Symptoms on the cuttings were observed as rotted areas on the middle of the stems. The cortical tissues of the plants showed a distinct brown discoloration. Eventually, the infected plants died. The pathogen was isolated from Dracaena stems and identified as F. solani by a fragment of the translation elongation factor 1-alpha (EF-1α) gene. Fusarium solani was confirmed by a pathogenicity test, and the causal agent was re-isolated from infected D. sanderiana plants. To the best of our knowledge, this is the first report of stem rot caused by F. solani on the cuttings of D. sanderiana.
Purpose:The objective of the present study was to investigate the structural relationships between executive function and academic engagement of female students: the mediating role of perception of the educational environment. Methodology: This study was a cross-sectional correlational study. The statistical population of this study included ninth grade female students in Sari during the academic years 2018-2019. The sample size was 280 students who were selected by multi-stage cluster sampling method. Academic engagement (Zrang, 2012), executive function (Nejati, 2013) and perception of educational environment (Gentry et al., 2002) questionnaires were used for data collection. Data were analyzed by structural equation modeling using software SPSS-18 and Amos-23. Findings: The results showed that the structural relationships between executive function and academic engagement of female students: the mediating role of perception of the educational environment had a good fit. In addition, executive function had a direct and significant effect on perception of educational environment and academic engagement. Perception of educational environment had a direct and significant effect on academic engagement and executive function with the mediating role of perception of the educational environment (P <0.05). Conclusion: According to the direct and indirect relationships of the present study, the academic engagement of female students can be improved by improving executive function with the mediating role of perception of the educational environment.
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.