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Differential effects of soluble salts on seed germination of Marrubium vulgare L.
Journal of Applied Research on Medicinal and Aromatic Plants ( IF 3.9 ) Pub Date : 2020-04-10 , DOI: 10.1016/j.jarmap.2020.100250
Bouzid Nedjimi , Zahrat E. Souissi , Brahim Guit , Youcef Daoud

In Mediterranean basin and western Asia, Marrubium vulgare L. (Lamiaceae) presents a great demand in therapeutic and folk-medicinal usages. However, data about the seed ecology of this medicinally important shrub is scarce. Therefore, the knowledge of its germination requirements is needed for plant establishment in new potential areas. In present work, the effect of different salinities (NaCl, Na2SO4, CaCl2 and MgCl2) on the germination percentage (GP), germination velocity (GV) and salinity tolerance index (STI) of M. vulgare was studied. A complete randomized design was performed in which four salinity levels (0, 50, 100 and 150 mM) were used. The experiment was conducted in programmed incubator with light/darkness temperatures of 25 °C/15 °C at a 12–h photoperiod. The results revealed that seeds of M. vulgare were non–dormant and exhibited highest GP under non–saline conditions (∼ 95 %). Both GP and GV decreased significantly with increasing salinity irrespective of applied salt types. The inhibition of germination by soluble salts was in the following order: Na2SO4 > MgCl2 > CaCl2 > NaCl. The salinity tolerance index (STI) displayed that salinity tolerance of M. vulgare was highest for NaCl and lowest for Na2SO4 at the same concentration among the four saline solutions. These findings suggest that M. vulgare may be considered as a new moderate salt–tolerant species and a promising medicinal shrub for saline soil rehabilitation.



中文翻译:

可溶性盐对种子萌发的不同影响欧夏至草L.

在地中海盆地和西亚,大叶万寿菊(Lamiaceae)在治疗和民间医学用途方面有很大的需求。然而,关于这种具有重要医学意义的灌木种子生态的数据很少。因此,在新的潜在地区建立工厂需要了解其发芽要求。在目前的工作中,不同的盐度的效果(氯化钠,钠2 SO 4,氯化钙2和的MgCl 2)上的发芽率(GP),发芽速度(GV)和耐盐性指数(STI)M.大麦被研究了。进行了完整的随机设计,其中使用了四个盐度水平(0、50、100和150 mM)。该实验在程序孵化器中进行,光照/黑暗温度为25°C / 15°C,光照时间为12 h。结果表明,普通茄子的种子是无休眠的,在非盐条件下表现出最高的GP(约95%)。不管施用何种盐,GP和GV都随着盐度的增加而显着下降。可溶性盐抑制发芽的顺序如下:Na 2 SO 4 > MgCl 2 > CaCl 2 > NaCl。耐盐性指数(STI)显示的该耐盐性M.大麦在四种盐溶液中,相同浓度的NaCl最高,Na 2 SO 4最低。这些发现表明,寻常型支原体可以被认为是一种新的中等耐盐物种,并且有望用于盐碱地土壤修复。

更新日期:2020-04-10
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