Bibliographic citations
Tito, Y., (2020). Longevidad de semilla sexual de seis especies silvestres de Papa (Solanum spp.) almacenadas en cámara fría [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/4605
Tito, Y., Longevidad de semilla sexual de seis especies silvestres de Papa (Solanum spp.) almacenadas en cámara fría []. PE: Universidad Nacional Agraria La Molina; 2020. https://hdl.handle.net/20.500.12996/4605
@misc{renati/1113838,
title = "Longevidad de semilla sexual de seis especies silvestres de Papa (Solanum spp.) almacenadas en cámara fría",
author = "Tito Jauregui, Yasmín Vanessa",
publisher = "Universidad Nacional Agraria La Molina",
year = "2020"
}
Estimating seed longevity or lifespan is important to manage seed collections of germplasm. In this research, sexual seed of 23 accessions of wild potato were used to estimate seed longevity, analyze differences between species, and determine the influence of species geographical origin. An accelerated aging method using a controlled environment at 60% relative humidity and 45 ° C temperature was used to determine seed longevity time at which germination rate declines to 50% (p50). Lithium chloride (LiCl) solutions were used to provide the appropriated relative humidity environment. The effect of exposing seeds to accelerated aging was evaluated by measuring germination rates at various time intervals. The emergence of a 3mm radicle was used as a seed viability criterion in the germination test. The seed survival curve was plotted and longevity (p50) was determined by the equation of Ellis and Roberts (1980). It was determined that p50 ranged between 23.59 days for accessions CIP760355 and CIP761977 (S. raphanifolium), to 53.06 days for accession CIP764506 (S. wittmackii), with an average of 38.33 days. The seeds of these 23 wild accessions appear to be relatively long-lived. Regarding the habitat of the species, it was observed greater longevity (p50) in the accessions of the species S. dolichocremastrum and S. wittmackii, which are typical of regions with higher annual temperatures and lower altitude compared to other species.
This item is licensed under a Creative Commons License