Effect of Thermal Period on Seed Dormancy of Damask Rose (Rosa damascena Mill.)
نویسندگان: ثبت نشده
چکیده مقاله:
Damask rose (Rosa damascena Mill.) has high economic importance and commercial value. The plant essential oil is used for perfumery, food and medicinal industries. It is necessary to know much about seed germination for study of genetic variation and breeding improved varieties of R. damascena. In this study seed germination of R. damascena were evaluated, using thermal period treatments. The data were analyzed based on the Randomized Completely Design with 3 replications. Seeds were sterilized for elimination with NaOCl. Seeds of R. damascena were subjected to five different temperature regimes. For control, the seeds were placed at 4°C continuously. The seeds of all other treatments initially were placed at 25°C for the first warm stratification. Then they were placed at 4°Cfor 2, 4, 6 and 8 weeks for cold stratification as 2w/2w, 2w/4w, 2w/6w and 2w/8w, respectively. For the second cycle, seeds were placed at 20 °C for warm stratification followed by 2, 4, 6 and 8 weeks for cold stratification. The treatments were repeated for 3 cycles. Then the all of treatments were applied 30 weeks of continuously cold stratification at 4°C. The results of this study showed that the thermal period treatments had significantly promoted the germination percentage. The highest germination percentage and speed of germination were obtained for the 6w/2w treatment as (92%) and (1.17 seeds per day), respectively. The lowest germination percentage was found in the control and 8w/2w treatments (50%). In conclusion, it was observed that with application of thermal period (particularly 6w/2w) and 30 weeks of cold stratification to Damask rose seeds, dormancy was broken and germination was also highly improved.
منابع مشابه
effect of thermal period on seed dormancy of damask rose (rosa damascena mill.)
damask rose (rosa damascena mill.) has high economic importance and commercial value. the plant essential oil is used for perfumery, food and medicinal industries. it is necessary to know much about seed germination for study of genetic variation and breeding improved varieties of r. damascena. in this study seed germination of r. damascena were evaluated, using thermal period treatments. the d...
متن کاملInvestigation on sexual and asexual propagation methods of damask rose (rosa damascena mill.)
متن کامل
Evaluation of Some Postharvest Storage Approaches on Essential Oil Characteristics of Fresh Organic Damask Rose (Rosa damascena Mill.) Flowers
Damask rose (Rosa damascena Mill.) is an economically important species in the Rosaceae family for rose oil and rose water production, obtained exclusively from freshly-gathered Damask rose flowers. Iran is famous for producing organic rose essential oil, mainly used in the perfume industry and for folk medicines due to its healing properties. Due to their high perishability, postharvest handli...
متن کاملCorrelation between Anthocyanin and Essential Oil Content of Damask Rose (Rosa damascena Mill.)
The essential oil of Rosa damascena Mill. is one of the most valuable and important base material in the flavor and fragrance industry. It has also some medicinal properties. The aim of this study was to determine the correlation between anthocyanin and essential oil content of Damask rose petals in 6 important Damask rose growing in some locations of Iran i.e. Meimand, Layzangan, Shiraz Eram B...
متن کاملEffect of Rosa damascena Mill. flower extract on rat ileum
Rosa damascena flower is widely used for gastrointestinal (GI) disorders. However, its pharmacological action on isolated ileum has not been studied. In this research, the effect of extract of flower petals of R. damascena Mill. growing in Kashan, Iran, on ileum motility was investigated. Hydroalcoholic extract was prepared by percolation method. A section of rat ileum was suspended in an organ...
متن کاملEvaluation of Genetic Diversity of Some Damask Rose (Rosa damascena Mill.) Genotypes of Kurdistan Province Using Morphological Traits
This study was conducted to assessthegenetic variety of 12 damask rosegenotypes of Kurdistan using morphological traits in Zaleh Research Farm affiliated to Kurdistan Province Agriculture Research Center. The experiment was carried out as a randomized complete block design with three replications and each replication included three stocks in each genotype. Results of analysis of variance showed...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ذخیره در منابع من قبلا به منابع من ذحیره شده{@ msg_add @}
عنوان ژورنال
دوره 1 شماره 1
صفحات 55- 59
تاریخ انتشار 2012-09-01
با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023