This study explores the relationship between coping styles and strategies, and personality styles in a sample of 41 young volunteers of an institution that alleviates poverty in Lima. Peruvian adaptations of COPE and MIPS scales were administered. The results show that volunteers have higher scores on adaptive coping strategies. High scores in some particular personality styles were reported, which allowed to establish a personality profile of this group. According with theoretical framework, most coping strategies correlated with most personality styles, revealing four particular tendencies in these volunteers: they wish to have contact with other people, they usually see positive aspects of situations, they look forward for challenges, and they developed adaptive coping strategies. / El presente estudio explora la relación entre los estilos y estrategias de afrontamiento, y los estilos de personalidad en un grupo de 41 voluntarios de una institución de lucha contra la pobreza en la ciudad de Lima. Se utilizó las escalas COPE y MIPS adaptadas al medio. Los hallazgos revelaron que los voluntarios utilizan estrategias de afrontamiento adaptativas. Los estilos de personalidad que caracterizaron a la muestra permitieron determinar un perfil de personalidad del grupo. De acuerdo con la teoría revisada ambas variables psicológicas resultaron estar asociadas en este grupo de estudio, revelando cuatro tendencias particulares en los voluntarios: deseo por el contacto con los demás, disposición a buscar el lado positivo de las situaciones, interés por asumir retos, y desarrollo de estrategias de afrontamiento adaptativas.

Among ornamental plants, roses (Rosa L.) are considered the most economically important, being among the most popular garden shrubs, as well as the favorite cut flowers sold by florists. In the past roses have been classified as fairly salt-sensitive, however, recent nutrition studies suggest that they may actually tolerate moderate to relatively high salinities. The general objective of this research was to reassess the limits of tolerance to salinity of roses and the influence of the rootstock used, to determine the ameliorative properties of supplemental Ca2+ on the response to salt stress, and to establish the influence of Na+- and Cl--counter ions on the detrimental effects caused by these salinizing elements. The NaCl or NaCl-CaCl2-salinity tolerance limit for greenhouse roses, although greatly influenced by the rootstock, was between 12 and 15 mmol.L-1. Plants grafted on ?Manetti? sustained their productivity/quality characteristics for longer time periods, tolerated greater salinity concentrations, and accumulated less Cl- and Na+ in leaves of flowering shoots than those grafted on ?Natal Briar?, confirming the greater ability of the former rootstock to tolerate salt stress. Supplementing the saline solution with 0-10 mmol.L-1 Ca2+ (as CaSO4) did not alleviate the harmful effects caused by NaCl-salt stress (12 mmol.L-1) on the productivity and quality responses of roses. The detrimental effects caused by Na- and Cl-based salinity were greatly influenced by the composition of the salt mixtures (i.e. their counter ions). Sodium sulfate and CaCl2 were the least harmful salts; NaCl had intermediate effects, while NaNO3 and KCl were the most deleterious. Among the most distinguishable effects caused by the more toxic Na+ and Cl- counter ions were lower osmotic potential (piSS) and greater electrical conductivity (ECSS) of the salinized solutions, markedly increased uptake and/or transport of either Na+ or Cl- to the flowering shoot leaves, and altered uptake and/or transport of other mineral nutrients. Computations of the saline solutions? chemical speciation revealed that salts containing divalent ions had lower ionization and exhibited greater ion associations compared to monovalent ion salts, rendering a lower number in free ions/molecules in solution which caused greater SS and lower ECSS in those solutions.