General overview of genetic research and experimentation on coconut varieties tolerant/resistant to lethal yellowing

The Lethal Yellowing (LY) disease is one of the main threats to coconut industry in many parts of Africa and the Caribbean. Planting resistant varieties has long been recognized as one of the most promising ways of controlling the disease. Considerable efforts have been devoted throughout the world to screening suitable varieties and have often involved international cooperation. It has proven to be a lengthy and difficult task. We present an overview of these efforts with special mention to Ghana, Jamaica and Mexico. Although no variety so far has been proven fully and permanently resistant, treating resistance level as a threshold trait makes it possible to demonstrate significant differences among varieties, which can be exploited effectively to make genetic improvement a component of an integrated control strategy. Based on past experience, we make a few suggestions to increase the diversity of resistance sources and increase the level and the sustainability of resistance to LY in coconut. (Résumé d'auteur

Cape Saint Paul Wilt Disease of coconut in Ghana: surveillance and management of disease spread

The Cape Saint Paul Wilt Disease (CSPWD), a lethal-yellowing type disease of coconut has been in Ghana since 1932. Aerial and/or ground surveys were undertaken to assess the current status of the disease spread. The survey showed that the spread of the disease for the past 5 years has mainly been the expansion of existing foci. However, new outbreaks were identified at Glidzi in the Volta, Bawjiase and Efutu Breman in Central regions. After the resurgence in the Volta region in 1995, the Woe-Tegbi-Dzelukope corridor has remained endemic, but less aggressive. Pockets of healthy groves remain along all the coastline and inland of known disease zones. Eradication of diseased palms at Ampain focus lying just about 60 km to the Ivorian border, and disease situations on new replanting with MYD × VTT hybrid are discussed. (Résumé d'auteur

Moral Injury:A Framework for Understanding Conflict-Related Sexual Violence Against Men

Studies on conflict-related sexual violence (CRSV) emphasize the need for the integration of a victim-centered lens into Feminist International Relations (IR) frameworks on sexual violence victimization in conflict or war. However, our understanding of the perpetrator-centered lens is limited. Drawing from ethnographic accounts of Nigerian security agents, male victims of CRSV, and aid workers, we analyze moral injury as a framework for discussing CRSV. In Nigeria, counterterrorism operations can lead to morally detrimental circumstances due to the government’s poor management of counterterrorism operations, resulting in the loss of lives and subsequent feelings of betrayal, anger, and guilt by security agents. Some security agents often display these emotions through violent acts to others, such as CRSV against men and boys suspected of terrorism, thereby exacerbating moral injury. The guilt-based moral injury arises when security agents witness CRSV against men and boys by colleagues and fail to seek justice for victims, as this contradicts social and institutional norms. Our article broadens the concept of moral injury by elucidating its significance to CRSV. In doing so, it advances the concept’s disciplinary focus on psychology to IR or international security—counterterrorism and CRSV—for conceptual sophistication and interdisciplinary exchange of thoughts. This article offers valuable insights into trauma-informed international humanitarian interventions for security agents and victims

Search for alternate hosts of the coconut Cape Saint Paul Wilt Disease pathogen

Lethal Yellowing disease locally called Cape Saint Paul wilt disease (CSPWD) is the bane of the coconut industry in Ghana and is caused by a phytoplasma. In Ghana, there are areas where the disease has re-infected re-plantings long after decimating all the palms in the area. This brings to the fore the possibility of alternate hosts in the spread of the disease because the pathogen is an obligate parasite. In this work, a number of plants were screened for their host status to the CSPWD pathogen. The presence of phytoplasmas in these plants was tested by polymerase chain reaction analysis using universal phytoplasma primers P1/P7 and CSPWD-specific primers G813/GAKSR. Although Desmodium adscendens tested positive to the CSPWD-specific primers, cloning and sequencing did not confirm it as an alternate host. The identification of alternate hosts will help us to evolve sound control strategies against the spread of the disease. (Résumé d'auteur

Moral Injury:A Framework for Understanding Conflict-Related Sexual Violence Against Men

Studies on conflict-related sexual violence (CRSV) emphasize the need for the integration of a victim-centered lens into Feminist International Relations (IR) frameworks on sexual violence victimization in conflict or war. However, our understanding of the perpetrator-centered lens is limited. Drawing from ethnographic accounts of Nigerian security agents, male victims of CRSV, and aid workers, we analyze moral injury as a framework for discussing CRSV. In Nigeria, counterterrorism operations can lead to morally detrimental circumstances due to the government’s poor management of counterterrorism operations, resulting in the loss of lives and subsequent feelings of betrayal, anger, and guilt by security agents. Some security agents often display these emotions through violent acts to others, such as CRSV against men and boys suspected of terrorism, thereby exacerbating moral injury. The guilt-based moral injury arises when security agents witness CRSV against men and boys by colleagues and fail to seek justice for victims, as this contradicts social and institutional norms. Our article broadens the concept of moral injury by elucidating its significance to CRSV. In doing so, it advances the concept’s disciplinary focus on psychology to IR or international security—counterterrorism and CRSV—for conceptual sophistication and interdisciplinary exchange of thoughts. This article offers valuable insights into trauma-informed international humanitarian interventions for security agents and victims

Evaluation of some basic traits of a promising coconut hybrid: Sri Lankan green dwarf crossed to Vanuatu tall (sgd x vtt)

The Lethal Yellowing Disease locally referred to as the “Cape St Paul Wilt Disease” is the single most important disease that has devastated several hectares of coconut plantations in Ghana. Two decades of coconut screening for tolerant planting material has identified the Sri LankanGreen Dwarf crossed Vanuatu Tall (SGD x VTT) coconut hybrid as the most promising planting material in the context of disease. To provide farmers with planting material that has high disease tolerance and also good agronomic characteristics, the study compared some basic traits ofthe coconut hybrid with other important coconut varieties with the objective of determining the suitability of the SGD x VTT as alternative planting material to revamp the coconut industry in Ghana. Mean sample size of 25 palms per coconut variety under the study was analyzed using two sample t-test procedure. The study indicated that the yield performance of the SGD x VTT coconut hybrid was better than the tall coconut types including the local West African Tall (WAT) and compared favourably with the Malayan Yellow Dwarf crossed Vanuatu Tall (MYD x VTT) coconut hybrid. The good agronomic characteristics of the SGD x VTT coupled with itshigh resistance to the CSPWD proved its suitability as alternative planting material to revamp the coconut industry in Ghana