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Storage duration, light, temperature, and salinity exposure influence germination of the glycophyte Rhanterium epapposum
Botany ( IF 1.1 ) Pub Date : 2021-01-28 , DOI: 10.1139/cjb-2020-0153
Arvind Bhatt 1 , María Mercedes Carón 2 , David Gallacher 3 , Paulo Roberto de Moura Souza-Filho 4
Affiliation  

Botany, Ahead of Print.
Regeneration of native species is the first priority for biodiversity conservation and restoration. To this end, it is key to have seeds properly conserved in seed banks and knowledge of seed longevity and (or) dormancy alleviation at different storage time intervals. In addition, understanding the germination response of the stored seeds to environmental conditions improves the efficiency of restoration and rehabilitation projects. We investigated the influence of storage duration (1–5 years), light (0 or 12 h of illumination), thermoperiod (night/day temperatures of 15/20 and 20/25 °C), and salinity (0, 100, 200. and 400 mmol/L of NaCl) on seed germination of Rhanterium epapposum, a glycophytic species from the Arabian Peninsula. Seeds maintained viability after five years of storage indoors at room temperature. Three years of storage alleviated seed dormancy. Exposure to 12 h light per day and thermoperiods of 15/20 °C enhanced seed germination. The seeds were glycophytic; after-ripened seeds exposed to salinity exhibited reduced rates of germination that did not recover after the salinity was alleviated.


中文翻译:

贮藏时间,光照,温度和盐分暴露会影响糖生植物Rhanterium epapposum的萌发

植物学,提前印刷。
原生物种的再生是生物多样性保护和恢复的首要任务。为此,关键是将种子妥善保存在种子库中,并了解在不同存储时间间隔的种子寿命和(或)缓解休眠的知识。此外,了解所储存种子对环境条件的发芽反应可提高恢复和复原项目的效率。我们调查了存储时间(1-5年),光照(光照0或12小时),热周期(夜间/白天温度分别为15/20和20/25°C)和盐度(0、100、200)的影响)和400 mmol / L NaCl溶液)对朝鲜半岛Rhanterium epapposum(一种来自阿拉伯半岛的糖生植物)的种子发芽的影响。在室温下室内存放五年后,种子保持了活力。三年的保存减轻了种子的休眠。每天暴露于12 h光照和15/20°C的热周期可增强种子发芽。种子具糖生;暴露于盐分下的成熟后种子的发芽率降低,但在盐分减轻后仍未恢复。
更新日期:2021-01-28
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