唇形科(Lepechinia floribunda)的物理休眠:一种具有药用价值的本地灌木

IF 0.6 4区生物学 Q4 PLANT SCIENCES

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI:10.31055/1851.2372.V52.N4.18855

Lorena Ashworth, Julia L. Camina, Guillermo Funes

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引用次数: 3

摘要

一种药用原生灌木——花Lepechinia floribunda (Lamiaceae)的物理种子休眠。Lepechinia floribunda是一种具有多种用途的芳香药用灌木。种子发芽率低是其繁殖的主要限制性状。本研究的目的是检验花栗种子存在物理休眠的情况，并评价贮藏时间和不同的发芽前处理对克服这种休眠的效果。我们进行了吸胀实验，并测试了储存0、90、270和1050天的种子的发芽情况，这些种子分别经过热(100°C的水)和化学刻蚀(硫酸)预处理。花栗草种子有生理休眠，打破生理休眠最有效的处理是硫酸，其萌发率超过70%。贮藏时间不影响休眠状态，种子活力至少保持3年以上。本研究结果将有助于建立这一本土有用植物的有性繁殖策略。

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Dormición física en Lepechinia floribunda (Lamiaceae): Un arbusto nativo de interés medicinal

Physical seed dormancy in Lepechinia floribunda (Lamiaceae): a medicinal native shrub. Lepechinia floribunda is an aromatic and medicinal shrub with multiple uses. The low germination of its seeds is the main limiting trait for propagation. The goal of this study was to test the presence of physical seed dormancy in L. floribunda and to assess the effectiveness of time of storage and different pregermination treatments in order to overcome such dormancy. We conducted an imbibition experiment and tested germination in seeds stored for 0, 90, 270, and 1050 days, which were subjected to pretreatments of thermal (water at 100°C) and chemical scarification (sulphuric acid). Seeds of L. floribunda have physical dormancy, and the most effective treatment to break it was sulphuric acid, surpassing 70% of germination. Time of storage did not affect the state of dormancy, and the viability of seeds was maintained high for at least 3 years. Results from this study will help to establish strategies of sexual propagation of this native useful plant species.

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来源期刊

Boletin De La Sociedad Argentina De Botanica PLANT SCIENCES-

CiteScore

1.00

自引率

33.30%

发文量

审稿时长

>12 weeks

期刊介绍： Bol. Soc. Argent. Bot. publishes original scientific works from the whole spectrum of Plant Biology (structure, anatomy, development, physiology, cytology, genetics, evolution, ecology, paleobotany, palynology, ethnobotany, etc.) in the diverse vegetable organisms and related groups (mycology, ficology, lichenology, briology, etc.), both in basic and applied aspects. Taxonomic works (of systematics, phylogeny, monographs, revisions, lectotypifications, nomenclatural acts, descriptions of taxa), phytogeographic and phytosociological works (survey and classification of vegetation at different spatial scales and without restriction of methodological approaches) are considered for publication. Contributions that address complete phytogeographic units or sub-units and those that fill gaps in knowledge of vegetation in little-known territories are especially welcome. Extensions of geographical areas are published only when it comes to new citations for a country. Checklists and lists of annotated plants are not published. Articles submitted for publication must be original and must not have been submitted to another publisher or previously published (print or electronic format). Submissions of papers already published in another language will not be accepted (autoplagio for translation).