Patrícia da Silva Rodrigues
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Patrícia da Silva Rodrigues has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Antonia Maiara Marques Do Nascimento
Department of Digitalization, Higher Polytechnic School, University of Burgos, Avda. Cantabria S/N, 09006 Burgos, Spain
1 shared publication - Artur Mendes Medeiros
Universidade Federal do Piauí, Brazil
1 shared publication - Maria Clara Alencar Rodrigues
Universidade Federal do Piauí, Brazil
1 shared publication - Priscila Alves Barroso
Universidade Federal do Piauí, Brazil
1 shared publication - Ruben Ruiz-Gonzalez
Department of Digitalization, Higher Polytechnic School, University of Burgos, Avda. Cantabria S/N, 09006 Burgos, Spain
1 shared publication - Silvokleio da Costa Silva
Universidade Federal do Piauí, Brazil
1 shared publication
Latest Publications
- Open Access
- 16 December 2025
- Published by MDPI AG in Preprints.org
Initial Growth and Stomatal Characteristics of Capsicum Accessions Under PEG-Induced Water Stress In Vitro
Water stress compromises morphological and physiological aspects of pepper plants (Capsicum spp.), affecting their development. Polyethylene glycol (PEG) is widely used to simulate drought conditions in vitro, making it possible to assess crop tolerance to water restriction and assist in the selection of more resilient varieties. This study aimed to evaluate the in vitro germination, initial growth, and stomatal characteristics of ornamental pepper accessions subjected to different levels of water stress induced by PEG 6000. The study assessed seven pepper accessions and five concentrations of PEG 6000 (0%, 5%, 10%, 15%, and 20%) in Murashigue and Skoog media. Under PEG-induced water deficit conditions, no germination occurred at concentrations above 5%, unlike other studies observed with Capsicum. This result highlights the effect of genotype on tolerance to PEG levels. Water deficit resulted in a 13.1% reduction in germination compared to the control (p<0.05), in addition to significantly affecting the percentage of dry matter in the shoot and roots. A decrease in stomatal density (51.6 to 35.4 stomata mm⁻²) and in the width of the stomatal midpoint (from 14.16 µm to 12.62 µm) was also observed. Among the genotypes evaluated, accessions CPCE 020, CPCE 018, and CPCE 011 showed better performance under stress, demonstrating greater tolerance to water deficit.
- 16 December 2025
- Published by MDPI AG in Preprints.org
Open AccessInitial Growth and Stomatal Characteristics of Capsicum Accessions Under PEG-Induced Water Stress In Vitro
Water stress compromises morphological and physiological aspects of pepper plants (Capsicum spp.), affecting their development. Polyethylene glycol (PEG) is widely used to simulate drought conditions in vitro, making it possible to assess crop tolerance to water restriction and assist in the selection of more resilient varieties. This study aimed to evaluate the in vitro germination, initial growth, and stomatal characteristics of ornamental pepper accessions subjected to different levels of water stress induced by PEG 6000. The study assessed seven pepper accessions and five concentrations of PEG 6000 (0%, 5%, 10%, 15%, and 20%) in Murashigue and Skoog media. Under PEG-induced water deficit conditions, no germination occurred at concentrations above 5%, unlike other studies observed with Capsicum. This result highlights the effect of genotype on tolerance to PEG levels. Water deficit resulted in a 13.1% reduction in germination compared to the control (p<0.05), in addition to significantly affecting the percentage of dry matter in the shoot and roots. A decrease in stomatal density (51.6 to 35.4 stomata mm⁻²) and in the width of the stomatal midpoint (from 14.16 µm to 12.62 µm) was also observed. Among the genotypes evaluated, accessions CPCE 020, CPCE 018, and CPCE 011 showed better performance under stress, demonstrating greater tolerance to water deficit.