Investigation morphological and physiological response of Thymus vulgaris L. to drought stress
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 5, Issue 2
Abstract
This study was performed to evaluate the effect of drought stress on quality and quantity yield of Thymus vulgaris under field and laboratory condition in Karaj, Iran. The study was conducted as randomized complete block design with five treatments and three replications. Treatments were included 100% moisture (control), 80% (optimum irrigation), 60% (deficit stress), 40% (fairly high stress) and 20% (high stress) of field capacity. Before plant harvesting, morphological traits were recorded. Then plants were cut from about 3cm above ground and aerial organs yield was evaluated after drying at 60-70°C. Essential oil was taken by using Clevenger and water distillation method during 2.5h and its yield was calculated. Soluble sugars, proline, sodium, potassium, magnesium, calcium and iron were measured. Results indicated that drought stress significantly affected plant height, flowering shoot yield, oil percent, oil yield, thymol percent, carvacrol percent, amount of chlorophyll a, chlorophyll b, proline, soluble sugars, sodium, magnesium, iron and RWC (α≤0.01). Mean comparisons showed that the highest flowering shoot yield belonged to 80% of field capacity with 1728kg/ha. The highest (2.22%) and the lowest (0.74%) oil percent were observed in 20 and 100% of field capacity, respectively. 80, 60 and 40% of field capacity had the maximum of oil yield with 19.26, 18.478 and 17.309kg/ha, respectively. The maximum of thymol percent belonged to 80 (42.37%), 60 (42.52%) and 40% (41.4%) of field capacity. The highest magnesium amount observed in 80 (0.74ppm) and 60% (0.63ppm) of field capacity. 100 and 80% of field capacity showed the highest iron with 0.53 and 0.67ppm, respectively.
Authors and Affiliations
Mansour Sarajuoghi, Bohloul Abbaszadeh, Mohammad Reza Ardakani
Keywords
Related Articles
- EP ID EP37894
- DOI -
- Views 154
- Downloads 0
Study of floristic-ecologic diversity and essential oil variation in Stachys lavandolifolia vahl populations from west of Iran
This study carried out for determination and discrimination of floristic-ecologic and essential oil variation within Stachys lavandolifoliaVahl Populations from west of Iran. In order to study diversity in S. lavandolif...
Investigation of habitat characteristic of Phlomis cancellata Bunge. in Mazandaran province, in Iran
Phlomis cancellata Bunge. is a native plant belongs to Labiatae family which can used morein modern medicine and different industries for its essential oil particulars, in addition to Iranian folk medicine. The research...
Incidence and distribution of begomoviruses from pothwar region of Pakistan
Begomoviruses are single stranded whitefly transmitted plant viruses which are responsible for huge economic losses across the world. Several begomovirus infections have been reported from Pakistan in last two decades bu...
Determination of lead and zinc in king mackerel (Scomberomorus guttatus Bloch & Schneider, 1801), Spanish mackerel (Scomberomorus commerson Lacepède, 1800) and Tiger-toothed Croaker (Otolithes ruber Bloch and Schneider, 1801) from Persian Gulf, Iran in 2001 and 2011
The present study was carried out to investigate contamination of heavy metals Pb and Zn in liver and muscle of Scomberomorus guttatus, Scomberomorus commerson and Otolithes ruber from Persian Gulf, Iran, in 2001 and 2...
Agglomerative hierarchical clustering based on morphmetric parameters of the populations of Labeo rohita
Labeo rohita populations from five geographical locations from the hatchery and Riverine system of PunjabPakistan were studied for the clustering on the basis of similarities and differences based on morphometric parame...