Marcadores moleculares microssatélites na avaliação de sementes de soja com variação na coloração do hilo.

Marcadores microssatélite têm sido utilizados na determinação da pureza genética em programas de melhoramento e de produção de sementes, visando garantir a qualidade genética das sementes. Objetivou-se neste trabalho demonstrar, com auxílio de marcadores moleculares microssatélites, que variações na coloração do hilo em sementes de soja, muitas vezes não constituem variação genética. Foram avaliadas sementes de soja da cultivar CD 222 que apresenta sementes com hilo preto, e de duas linhagens (CD 02RV-8444 e CD 01RV-7618), as quais apresentam sementes com hilo marrom. As sementes com variações na coloração e tonalidade do hilo encontradas em cada genótipo foram separadas visualmente em grupos. O DNA de cada semente foi extraído e analisado com marcadores microssatélites em "bulks" contendo DNA de cinco sementes. As variações encontradas na coloração do hilo da cultivar CD 222 e da linhagem CD 02RV-8444 não foram devidas à variação genética, considerando 16 locos microssatélites. Para a linhagem CD 01RV-7618, os bulks de sementes com hilo marrom pigmentado de preto (B1), com hilo marrom mais intenso (B2) e intermediário (B3), foram considerados iguais. Para esta mesma linhagem foi detectada diferença no bulk de sementes com hilo marrom menos intenso (B4), com o primer Satt 070. Duas sementes deste bulk apresentaram o mesmo padrão molecular observado para os outros bulks, no mesmo loco. As demais sementes foram consideradas misturas. A utilização de marcadores microssatélites demonstra que variações na cor ou tonalidade do hilo da soja nem sempre correspondem à variação genética

Editorial : Circular business models and strategies - The key to sustainable business and innovative supply chains

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Education for sustainable development in higher education institutions: an approach for effective interdisciplinarity

Purpose: This paper aims to develop an improved and harmonized approach to interdisciplinarity in education for sustainable development (ESD)within higher education institutions (HEIs), focusing on maximizing the mobilization of students from all academic disciplines. An attempt is made to reconcile varying strategies for the implementation of interdisciplinary ESD content in HEIs, studying the relative merit and benefit of those strategies and crafting a new approach to combining them, where possible. Design/methodology/approach: This work relies on a robust review and analysis of existing literature proposals on the implementation of ESD in HEIs to elaborate an integrated approach to interdisciplinarity. Specifically, a scoping literature review is applied, analyzing the existing approaches to ESD in HEIs as well as the challenges observed in their implementation. Using this theoretical framework, this paper evaluates the compatibility and efficiency of the approaches currently implemented. Based on this analysis, an integrative approach is outlined, building upon and combining existing proposals. Findings: Building on existing literature, this study identifies two main trends for interdisciplinarity in ESD in HEIs: integration into existing disciplinary curricula and new, stand-alone ESD curricula. This paper suggests adopting the two approaches simultaneously, to reach students from all academic disciplines, especially those with minimal exposure to ESD through their own discipline. Furthermore, this paper stresses that these dual curricula strategies should be combined with further interdisciplinary research initiatives as well as extensive leveraging of technology and e-learning. Originality/value: This study bridges the gap between diverging visions for ESD in HEIs, harmonizing strategies from the literature to outline a new, multilateral strategy. Furthermore, it extensively studies the need for increased engagement into ESD of students from underrepresented disciplines, including the humanities. This engagement has been little addressed in the literature, rendering the proposed approach original insofar as it outlines the ways to improve current approaches to ESD in HEIs

Smart cities and electrical and electronic waste management: a review of challenges and opportunities

Purpose – This paper aims to provide a comprehensive literature review on the practices and challenges in managing waste electrical and electronic equipment (WEEE) in smart cities. Design/methodology/approach – A systematic literature review was conducted using the Methodi Ordinatio. Articles published between 2012 and 2022 were analyzed, totaling 149 references, of which 30 were included in the final review. Findings – Emerging technologies such as the Internet of Things (IoT), big data and artificial intelligence (AI) are frequently highlighted as promising solutions for efficient e-waste management. Governance models and public policies are widely recognized as crucial for the successful implementation of WEEE management practices in smart cities. Originality/value – This study underscores the role of advanced technologies, such as IoT and AI, in enhancing urban mobility and WEEE management. Key challenges include information security, privacy, interoperability, costs and sustainability. The findings reveal a convergence between smart cities and WEEE management, fostering the circular economy and the recovery of valuable materials

Editorial: Circular Business Models and Strategies—The Key to Sustainable Business and Innovative Supply Chains

The concept of circular economy has recently emerged as a political goal (Gregson et al., 2015), in a context of rising resource prices and climate change. However, the idea is more often criticized, questioned than celebrated. In a circular economic model, waste becomes a resource to be recovered and revalued through recycling and reuse. In this context, five circular economy models are emerging and spreading rapidly in organizations, namely: circular supply chains, recovery and recycling, product life cycle extension, shared platforms and product as a service (Lacy and Rutqvist, 2015). However, companies looking to adopt these circular models will have to develop new business models at the expense of linear thinking (Sehnem et al., 2022). Such models help companies to improve differentiation, in reducing costs, in generating new revenues, in reducing risks as well as in reducing the impact on the supply of virgin resources. The adoption of these five circular business models has grown substantially in the past decade, although there are still many perspectives for change. Initially, innovation via the circular business model was driven by start-ups. Now, large multinationals are also making grandiose moves. While advancing the narrative of circular economy, multiple supply chain members need to adapt processes, practices and behaviors to implement sustainable business models (Morali and Searcy, 2013). Circular business models are used to regenerate materials, retain the value of resources and contributes to the re-signification of natural ecosystems and the reduction of waste and pollution. Despite this comprehension, the literature lacks for information on how this affects sustainable business and innovative supply chains. The circular economy encourages the use of clean energy, the use of cascading resources and has the potential to generate sustainable solutions at micro, meso and macro levels