effects of scarification and temperature on germination of licorice (glycyrrhiza glabra l.) seeds
نویسندگان
چکیده
laboratory experiments were performed to determine the effect of various scarification treatments at four temperature regimes on germination of licorice seeds . a randomized complete block design with four replications was used. germination counts were made every day for 2 weeks. at 50c, none of the chemically and mechanically scarified and non scarified seeds germinated. at 15, 25, and 350c, mechanical scarification increased seed germination to 94-98%. however, at these temperatures, velocity of germination of mechanically scarified seeds were lowest among all treatments. chemical scarification also increased germination percentage significantly to 90-95% with 45 min soaking. at 15 and 250c, seed germination percentage and velocity of germination increased as the soaking time in sulfuric acid increased from 5 to 30, 45, or 60 min. however, at 350c, there was no difference in germination percentage between soaking times of 5 and 60 min. it appears that soaking for 45 min provides full germination at 25 and 350c.
منابع مشابه
Agonistic and antagonistic estrogens in licorice root (Glycyrrhiza glabra)
The roots of licorice (Glycyrrhiza glabra) are a rich source of flavonoids, in particular, prenylated flavonoids, such as the isoflavan glabridin and the isoflavene glabrene. Fractionation of an ethyl acetate extract from licorice root by centrifugal partitioning chromatography yielded 51 fractions, which were characterized by liquid chromatography-mass spectrometry and screened for activity in...
متن کاملAssessment of Sensory, Texture and Color Properties of Functional Pastilles Containing Licorice (Glycyrrhiza glabra L.)
Background and Objectives: Medicinal pastilles are soft candies made (solidified) of thick liquids containing medicinal active ingredients. Licorice and its extracts are within the most important herbal plants used in various food industries and confectionaries. The substance is effective against diseases such as bronchitis and gastric ulcers. Materials and Methods: In this study, effects of a...
متن کاملLeaves Antimicrobial Activity of Glycyrrhiza glabra L.
Licorice (Glycyrrhiza glabra L.) is an important medicinal plant. In this study, the antimicrobial activities of ethanolic and aqueous extracts from licorice leaves were studied compared to root extracts activities. Bacillus subtilis, Enterococcus faecalis, Klebsiella pneumoniae, Pseudomonas aeruginosa, Staphylococcus aureus and Escherichia coli, and Candida albicans were used as test organisms...
متن کاملthe effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance
this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...
15 صفحه اولthe effects of time planning and task complexity on accuracy of narrative task performance
هدف اصلی این تحقیق بررسی تاثیر برنامه ریزی زمانی، هم چنین افزایش میزان پیچیدگی تکالیف در نظر گرفته شده بصورت همزمان، بر دقت و صحت و پیچیدگی عملکرد نوشتاری زبان آموزان می باشد. بدین منظور، 50 نفر از دانش آموزان دختر در رده ی سنی 16 الی 18 سال به عنوان شرکت کنندگان در این زمینه ی تحقیق در نظر گرفته شدند و به دو گروه آزمایشی و کنترل بصورت اتفاقی تقسیم شدند. اعضای گروه آزمایشی هر دو تکلیف ساده و پی...
The healing effect of licorice (Glycyrrhiza glabra) on Helicobacter pylori infected peptic ulcers
In Group 1, 15 were male and 5 were female and in Group 2, 11 patients were male and 9 were female. The healing of peptic ulcer was visible in 95% of Group 1 and 70% of Group 2. Pathologically, in Group 1, the eradicative effect of licorice against H. pylori was 70% in comparison to Group 2 (45%). These figures based on the urease breath test results were 55% and 40% respectively. In 80% of Gro...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
journal of agricultural science and technologyناشر: tarbiat modares university
ISSN 1680-7073
دوره 2
شماره Number 4 2010
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023