AGROCAMPUS OUEST (Institut Supérieur des Sciences Agronomiques, Agroalimentaires, Horticoles et du Paysage - 65, rue de St Brieuc - CS 84215 - 35042 Rennes cedex - France)
Abstract : Long-term survival during dry storage or longevity is a prerequisite to avoid deterioration, leading to loss of vigor. Longevity is routinely evaluated by the ability to germinate after storage. It increases progressively during seed maturation, after the acquisition of desiccation tolerance. However, the capacity to germinate represents only a part of the success of crop establishment. How seed maturation affects the resistance of several traits, as vigor, associated with seedling establishment, against deterioration was evaluated during seed filling and post-abscission phase of soybean BRS 284 seeds. Three new phenological stages between 7.1 and 7.2 (7.1.1, 7.1.2 and 7.1.3) were introduced to capture the rapid increase in seed longevity. Germination speed started to be affected at 7-14 days after storage depending on the stages. The delay on germination increased with maturation from 7.1.3 to dry mature seeds. The time to 50% loss of elongation capacity of both organs during storage was similar to that of loss of germination. Also, it increased steadily during seed maturation after mass maturity and harvest maturity stages, highlighting the importance of the late phase of seed maturation for building seed vigor.
https://hal-agrocampus-ouest.archives-ouvertes.fr/hal-01848446 Contributor : Catherine CliquetConnect in order to contact the contributor Submitted on : Tuesday, July 24, 2018 - 3:47:14 PM Last modification on : Friday, May 20, 2022 - 9:04:59 AM Long-term archiving on: : Thursday, October 25, 2018 - 4:21:56 PM
Denise Puntel Basso, Andrea Akemi Hoshino-Bezerra, Maria Márcia Pereira Sartori, Julia Buitink, Olivier Leprince, et al.. Late seed maturation improves the preservation of seedling emergence during storage in soybean. Journal of Seed Science, Associação Brasileira de Tecnologia de Sementes, 2018, 40 (2), pp.194-201. ⟨10.1590/2317-1545v40n2191893⟩. ⟨hal-01848446⟩