P. Salehi Shanjani; S.E. Seyedian; H. Javadi
Abstract
In order to investigate the effects of different irrigation intervals on morphological characteristics of different Achillea millefolium L. populations, an experiment was conducted at the experimental field of Research Institute of Forests and Rangelands during 2012 and 2013. Three irrigation intervals ...
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In order to investigate the effects of different irrigation intervals on morphological characteristics of different Achillea millefolium L. populations, an experiment was conducted at the experimental field of Research Institute of Forests and Rangelands during 2012 and 2013. Three irrigation intervals (7, 14 and 21 days) and 19 A. millefolium populations were compared in a factorial experiment based on a complete randomized block design with three replications. As many plants were lost in irrigation interval of 21 days, comparison was continued with irrigation intervals of 7 and 14 days. Results showed that irrigation intervals and population origins had significant effects (P≤0.005) on the plant height, crown diameter, stem number, dry matter yield (g plant -1 ), flower diameter, flower number and flowering time. In almost all populations the plant height, crown diameter and flower diameter decreased, whereas flower number per plant and the full flowering time increased in irrigation interval of 14 days. The 19 populations were grouped into three clusters. Populations in the cluster I had higher plant height, yield and flowering time. Populations in the cluster III showed higher crown diameter, flower diameter, stem number and flower number, and shorter full flowering time. These results indicated that populations in the cluster III had favorable potential production in semi-arid regions.
M.A. Alizadeh; A.A. Jafari; S.E. Sayedian; M. Izadpanah; M. Amirkhani; M.R. Pahlevani; L. Fallah-Hoseini; M. Ramezani Yeganeh
Abstract
In order to evaluation of morphological and phenological traits in 68 accessions of five chamomile species including: Anthemis altissima L., A. haussknechtii Boiss. & Reut., A. pseudocotula Boiss., A. tinctoria L. and A. triumfettii (L.) All., an experiment was ...
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In order to evaluation of morphological and phenological traits in 68 accessions of five chamomile species including: Anthemis altissima L., A. haussknechtii Boiss. & Reut., A. pseudocotula Boiss., A. tinctoria L. and A. triumfettii (L.) All., an experiment was conducted using a randomized complete block design (RCBD) with three replications in the Alborz research station in Karaj, during 2011-2012. Data were collected for the length and width of canopy, plant height, number of flowers, shoot fresh and dry weight, growth degree-days (GDD), essential oil percentage, and essential oil yield. The average values of growth traits and shoot yield recorded for A. pseudocotula were higher as compared with other species. In addition, this species was an earlier growing species due to the lower values of growth degree-days (GDD) in flowering and maturity stages. The essential oil yield of A. altissima (33 g per plant) and) A. triumfettii (59 g per plant) was more than that recorded for the three other species. The shoot yield of Anthemis tinctoria in Ardebil and Khoy1 populations was higher as compared with other populations. The shoot yield of A. triumfettii in Semnan1 and Semnan 2 populations and the essential oil yield of A. triumfettii in Semnan 2 and Shahrood populations were higher than those recorded for other populations. The Loshan and Salmas populations were earlier growing species. The highest shoot yield and essential oil yield were recorded for A.haussknechtii in the Golastan population. For A. pseudocotula, the highest shoot yield, and essential oil yield were obtained in the Golastan 2 population, and the Golastan1, Zanjan1, and Zanjan2 populations were early growing species. There were no significant differences among the populations of A. altissima. In all species, a direct relationship was found between shoot and essential oil yield and early growth, so that the early growing populations had higher shoot and essential oil yield and this feature could be used in the production of drought-resistant varieties under rainfed conditions.