Saudi Cultural Missions Theses & Dissertations
Permanent URI for this communityhttps://drepo.sdl.edu.sa/handle/20.500.14154/10
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Item Restricted Evaluation of Salt Tolerance at the Seedling Stage and Genetic Diversity in USDA Tomato (Solanum lycopersicum) Germplasm, and Genomic Insights into Leafminer Resistance and Tallness in Spinach (Spinacia oleracea) through Genome-Wide Association Studies (GWAS) and Genomic Prediction Approaches(University of Arkansas, 2024-12) Alatawi, Ibtisam; Ainong, ShiGenetic diversity and stress tolerance mechanisms in tomato (Solanum lycopersicum) and spinach (Spinacia oleracea) were explored through advanced genomic tools, focusing on salt tolerance in tomato and leafminer resistance and plant height in spinach. Using genome-wide association studies (GWAS) and genomic prediction (GP), this research uncovers key insights into the genetic architecture of these traits, paving the way for improving crop resilience. In tomato, the evaluation of 71 and 280 USDA accessions under saline stress identified genotypes with significant salt tolerance. Population structure analysis revealed three genetic groups, emphasizing the influence of domestication on diversity. These findings provide a strong foundation for breeding salt-tolerant tomato varieties tailored to regions affected by salinity. For spinach, GWAS identified significant single nucleotide polymorphism (SNP) markers associated with leafminer resistance and tallness. Candidate genes related to pest resistance and height were identified, offering valuable targets for breeding programs. Genomic prediction models showed high accuracy in selecting resistant and optimized genotypes, supporting the acceleration of spinach breeding efforts. The integration of genomic technologies with traditional breeding approaches enhances the ability to develop more resilient and productive crop varieties. These findings offer critical contributions to sustainable agriculture, particularly in addressing challenges posed by salinity stress and pest infestations.33 0Item Restricted Patients in KSA preference for emergency department visitation to general practitioner services and what advanced practice nurses could do to encourage patients to make the best choice(Saudi Digital Library, 2022-09-30) Alghatani, Fawziah; Roberts, Sara LisabethBackground: Emergency care services support the management of the emergent and non-urgent conditions. Advance Practice Nurses are an integral part of handling GP services and delivering care in Saudi Arabia. The GP services have reformed over time worldwide to anchor the delivery of quality and prompt care to citizens and visitors. Aim and Objectives: To conduct a systematic review that will explore emergency department visitations and general practitioner services in Saudi Arabia; To establish the preference for emergency department visitation to the general practitioner services among patients in the Kingdom of Saudi Arabia; To delineate what advanced practice nurses could do to inspire patients to choose between general practitioner and emergency department visitation. Methodology: A systematic review approach was used to answer the research question. A search was conducted on PubMed, ScienceDirect, MEDLINE, and Cochrane Library and PRISMA Flow Chart used to select 10 studies that met the eligibility criteria. A thorough quality assessment by using the ROBINS-I tool while data extraction done, and findings generated the key themes. Results: The key themes from the synthesis of the ten studies were preference for EDs, preference for primary or GP services, the key factors behind the preference for ED visits to GP Services, and role of APNs in the preference for GPs or EDs. The quality-of-care guarantees response to the urgent and non-urgent cases. On the other hand, the availability and accessibility of care in the EDs in Saudi explain their preference by the patients to the GPs. The organizational factors were of quick medical care, easy access, discounts, unavailability of the appointments in GPs shaped their demand. GPs offer continuous relationship, cost-effective, and treatment, which discourages ED care accessibility and visitation due to overcrowding and limited resources. Comparatively, personal factors of knowledge, attitudes, medical conditions, and age influence preference for EDs to GPs for urgent as well as non-urgent conditions. Conclusion and Recommendations: Patients prefer ED visitation to the GP services in KSA. APNs should champion the enhancement of services in the primary care units to reduce overutilization of ED. Future research could explore the primary factors besides quality of care or continuous relationship.6 0