Herbal
farzane Bahadori; Fatemeh Rabizadeh
Abstract
In the Iranian Red Data Book, Gypsophile Nepeta (Nepeta eremokosmos Rech. F.) is listed as a threatened species. It is naturally adapted to gypsum habitats. Understanding the relationships between environmental variables and N. eremokosmos distribution helps us apply these findings to establish preservation ...
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In the Iranian Red Data Book, Gypsophile Nepeta (Nepeta eremokosmos Rech. F.) is listed as a threatened species. It is naturally adapted to gypsum habitats. Understanding the relationships between environmental variables and N. eremokosmos distribution helps us apply these findings to establish preservation and cultivation programs. To understand the main adaptive mechanisms of N. eremokosmos to gypsic soils, anatomical analyses were performed. RDA (Redundancy Analysis), Pearson's correlation coefficients between explanatory variables were used to evaluate the effect of environmental factors on the abundance of N. eremokosmos species. Physicochemical characteristics of the soil were investigated in terms of factors including CaCO3, pH, EC (Electrical Conductivity), calcium, magnesium, sodium, potassium, phosphorus, and nitrogen. Idioblasts were clearly observed in this species' leaf parenchyma. There are also mineral crystals such as calcium oxalate in the leaf parenchyma that enable the plant to adapt well to gypsic soils. The calcium content was twice as large in N. eremokosmos habitats as in control sites. EC, pH, and nitrogen factors negatively impact this species' frequency and distribution. Our findings revealed that potassium, gypsum, CaCO3, and sand percentage had an essential role in N. eremokosmos abundance. In the future, this study will screen the critical factors for the domestication and cultivation of this species based on its habitat properties.
Fatemeh Rabizadeh
Abstract
Gypsophila mucronifolia Rech. is an endemic plant species of Caryophyllaceae that It has been reported from gypsum deserts around Semnan, Iran. A few reports have been made on the distribution of G. mucronifolia in relation to its descriptive compromise characteristics with soil and altitude factors. ...
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Gypsophila mucronifolia Rech. is an endemic plant species of Caryophyllaceae that It has been reported from gypsum deserts around Semnan, Iran. A few reports have been made on the distribution of G. mucronifolia in relation to its descriptive compromise characteristics with soil and altitude factors. Ecological studies of G.mucronifolia were performed for the first time. This species grows at altitudes of 1500 to 1800 meters from sea level, often on the northern slopes. Using Canoco for windows 4.5 software and statistical analyzes of RDA, the effect of environmental factors on the distribution of G.mucronifolia was determined. Elevation and gypsum contents showed positive correlation and content of CaCO3 and Na negative correlation with occurrence and growth of G. mucronifolia. The leaf surface with a scanning electron microscope (SEM) has studied that show glandular hairs on stem and leaves it there, but did not observe on the calyx. Leaf cells of G. mucronifolia are filled with druse crystals.
