Germination and development of M1 seedlings of two Selliera radicans Cav. accessions subjected to gamma radiation

Autores/as

  • Fabián Soto PUCV https://orcid.org/0000-0002-4444-264X
  • Patricia Peñaloza Pontificia Universidad Católica de Valparaíso. Escuela de Agronomía. Casilla 4-D. Quillota. Chile https://orcid.org/0000-0002-9618-7185
  • Eduardo Oyanedel Universidad Viña del Mar. Escuela de Ciencias Agrícolas y Veterinarias. Agua Santa 7055. Viña del Mar. Chile https://orcid.org/0000-0003-0271-8633
  • Flavia Schiappacasse Universidad de Talca. Facultad de Ciencias Agrarias. Departamento de Horticultura. Casilla 747. Talca https://orcid.org/0000-0002-1485-4328
  • Oscar Durán Comisión Chilena de Energía Nuclear. Centro Estudios Nucleares. La Reina. Nueva Bilbao 12.501. Las Condes. Santiago. Chile
  • Alexis Vidal Pontificia Universidad Católica de Valparaíso. Escuela de Agronomía. Casilla 4-D. Quillota. Chile

DOI:

https://doi.org/10.48162/rev.39.037

Palabras clave:

maleza de marismas, LD50, sobrevivencia de plántulas, M1

Resumen

Selliera radicans is a creeping plant native to Chile, New Zealand and Australia. It is increasingly used in the ornamental industry, and there is interest in breeding it to create commercial varieties. The aim of this study was to determine the effects of different doses of gamma radiation applied to the seeds on the germination and development of seedlings (M1) and the LD50 of two accessions of Selliera radicans for use in the induction of mutations. Seeds of the Vichuquén and La Serena accessions were exposed to 0, 100, 200, 300, 400, 500, 600 and 700 Gy from a 60Co source. Weekly germination percentages along with seedling numbers and lengths were recorded. Vichuquén seeds were more sensitive to this physical agent. The LD50 was 243.9 Gy for Vichuquén and 445.6 Gy for La Serena. Seedling lengths reached almost 4 mm for Vichuquén and 11.3 mm for La Serena at 12 weeks after sowing. Doses lower than 200 Gy are recommended since higher doses do not allow the development of seedlings to the extended cotyledon stage.

Highlights:

  • This is the first radiosensitivity study for the Goodeniaceae family and therefore for the Selliera genus.
  • This study shows the specific effect of gamma radiation at the level of germination and seedling formation according to accession of origin.
  • This study could be used for the genetic improvement of Selliera radicans via the induction of mutations.

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Publicado

01-12-2021

Cómo citar

Soto, F., Peñaloza, P. ., Oyanedel, E. ., Schiappacasse, F. ., Durán, O. ., & Vidal , A. (2021). Germination and development of M1 seedlings of two Selliera radicans Cav. accessions subjected to gamma radiation. Revista De La Facultad De Ciencias Agrarias UNCuyo, 53(2), 36–46. https://doi.org/10.48162/rev.39.037

Número

Sección

Genética y mejoramiento vegetal