Key message

Mimosa luisana seeds germinate after 7 years of storage, suggesting that they have a long span life; an interesting characteristic for environmental restoration of semi-arid zones.

Abstract

Mimosa luisana is endemic to Mexico, provides ecosystem services and is economically and culturally important. This species exhibits morphological, anatomical and physiological qualities that make it potentially valuable in ecological restoration. This study evaluated the effects of seed age on seed germination, survival seedlings and growth of M. luisana, on the assumption that seed age positively influences the parameters related to germination. Mature fruits were collected at the semiarid Tehuacán–Cuicatlán Valley and the seeds were extracted. Healthy seeds were measured and weighed to obtain a uniform sample. Seed moisture content, imbibition rate, germination percentage, survival seedlings and growth were quantified. Seeds that were 84 months old showed the lowest moisture content (4.65%) and imbibition rate of unscarified seeds increased as seeds were older. Scarification considerably promoted germination, which was epigeal and phanerocotylar. Regardless of seed age, seedling growth was slow, with the presence of foliar cotyledons which persisted after the appearance of the protophylls, and the characteristics of an adult plant were observed until the day 22 after sowing. Mimosa luisana seeds are long-lived and the germination percentage depends on the age of the seed and whether or not it was scarified.

中文翻译：

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种子年龄对含羞草萌发，幼苗存活和生长的影响

关键信息

含羞草种子在储存7年后发芽，表明它们具有较长的寿命。半干旱地区环境恢复的一个有趣特征。

抽象

含羞草是墨西哥的特有种，提供生态系统服务，在经济和文化上都很重要。该物种展现出形态，解剖和生理特性，使其在生态恢复中具有潜在价值。这项研究评估了种子年龄对lu.ana种子发芽，成活幼苗和生长的影响。，假设种子年龄会积极影响与发芽有关的参数。在半干旱的Tehuacán–Cuicatlán谷地收集成熟果实，并提取种子。测量健康种子并称重以获得均匀的样品。定量种子水分，吸水率，发芽率，成活幼苗和生长。84个月大的种子显示最低的水分含量（4.65％），并且随着年龄的增长，未钙化种子的吸水率增加。疏松大大促进了发芽，发芽和叶小叶。不论种子年龄多大，幼苗生长缓慢，叶状子叶的存在一直持续到叶绿素出现后，并且观察到成年植物的特性直到播种后第22天。含羞草种子寿命长，发芽率取决于种子的年龄以及种子是否被划痕。