Paper Information

Journal:   IRANIAN JOURNAL OF MEDICINAL AND AROMATIC PLANTS   January-February 2016 , Volume 31 , Number 6 (74); Page(s) 967 To 976.
 
Paper: 

VARIATION OF MORPHOLOGICAL TRAITS, SHOOT YIELD, ESSENTIAL OIL YIELD AND GROWING DEGREE-DAYS IN THE POPULATIONS OF PSEDU CHAMOMILE (TRIPLEUROSPERMUM SEVASNENSE (MANDEN.) POBED.)

 
 
Author(s):  ALIZADEH M.A.*, YARYAB S., JAFARI A.A., SALEHI P.
 
* RESEARCH INSTITUTE OF FORESTS AND RANGELANDS, AGRICULTURAL RESEARCH EDUCATION AND EXTENSION ORGANIZATION (AREEO), TEHRAN, IRAN
 
Abstract: 

This research was aimed to investigate morphological and phenological traits of 12 populations of pseudo chamomile (Tripleurospermum sevasnense (Manden.) Pobed.). The study was carried out in a randomized complete block design (RCBD) with three replications in the Alborz research station, Karaj, Iran, during 2011-2013. The study traits included longitudinal and transverse diameter of canopy cover, canopy cover area, plant height, number of flowers, shoot fresh and dry weight, growing degree-days (GDD), essential oil percentage and essential oil yield. Growing degree-days was calculated for flowering and harvesting time. Analysis variance of data showed that there were significant differences among populations (P<0.05). According to the results of mean comparisons, maximum shoot fresh weight (290.4 g/plant), shoot dry weight (99.8 g/plant) and essential oil yield (252.2 mg/plant) were recorded for Aredbil2. Therefore, this population was superior to the others. The results of growing degreedays at flowering and maturity stages showed that two populations (Gazvin2 and Tehran1) had lower values of growing degree-days. In the cluster analysis, populations were divided into three groups. The populations of cluster 1, including Karaj, Qazvin, and Khorramabad, were superior to the other two groups in terms of shoot yield and morphological traits. Our results clearly showed that after further tests and mass seed production in diffrent climate regions of the country, the supriore popultions of Karaj, Ghazvin1, and Khorramabad could be introduced as new cultivars.

 
Keyword(s): PSEUDO CHAMOMILE (TRIPLEUROSPERMUM SEVASNENSE (MANDEN.) POBED.), PHENOLOGY, ESSENTIAL OIL YIELD, GROWING DEGREE-DAYS
 
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