Resumen

MORENO-RODAS, Christian A. et al. Response of Physalis peruviana L. to Gamma Irradiation on Physiological and Physical Traits of the Fruit. Rev. fitotec. mex [online]. 2026, vol.49, n.1, pp.63-74.  Epub 02-Jun-2026. ISSN 0187-7380.  https://doi.org/10.35196/rfm.2026.1.63.

Irradiation with 60Co is a useful tool for breeding Physalis peruviana L., as it induces variability in physiological and physical traits. The aim of this study was to evaluate the effect of different radiation doses (0-200 Gy) on phenological traits (days to germination, flowering and fruit set) and physical traits of the fruit (weight, diameters, color and dry matter) in four ecotypes of cape gooseberry: Chiclayo, Colombia, Sacha and Modificada. A completely randomized design with factorial arrangement was used with the studied factors being ecotypes and irradiation doses. The analysis showed significant effects (P ≤ 0.05) of ecotypes, doses and their interaction in most traits. Intermediate doses (50-150 Gy) promoted earliness and increased fruit weight, size and color intensity, while higher doses (175-200 Gy) increased dry matter content in specific ecotypes. Sacha and Modificada ecotypes showed better response for yield and earliness, whereas Chiclayo excelled in solids accumulation. The genotypes × doses interaction was determinative in all cases, revealing differentiated responses. Results showed the potential of physical mutagenesis as a strategy to improve fruit quality and crop productivity, depending on appropriate dose-variety combinations.

Palabras llave : Cape gooseberry; fruit; gamma radiation; physical mutagenesis; plant breeding.

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