نتایج جستجو برای: Eucalyptus golubulus
تعداد نتایج: 7621 فیلتر نتایج به سال:
در این پژوهش اثر بازدارندگی اکالیپتوس (eucalyptus golubulus labill.) بر جوانه زنی و رشد علف هرز پنجه مرغی (cynodon dactylon (l.) pers.) به صورت: الف) غلظتهای متفاوت اسانس (ppm20، ppm50، ppm100) با روش محلول پاشی، ب) مقادیر مختلف برگ (2، 5 و 10 درصد وزنی) به صورت مالچ و مخلوط با خاک در چهار تکرار و ج) تأثیر غلظتهای مختلف اسانس (ppm20، ppm50، ppm100) و عصاره (25، 50 و 75 درصد) بر فرایند جوانه زنی...
اسانس های برگ و گل گیاهeucalyptus microtheca و همچنین برگ eucalyptus viminalis از منطقه ی زاهدان(دانشگاه) توسط تقطیر(ساده) با آب استخراج، و ترکیب شیمیایی آنها با استفاده از gc/ms آنالیز شد. ترکیبات عمده ی روغن برگ eucalyptus microtheca از منطقه ی زاهدان: آلفا-فلاندرن (487/16 %) ، آرومادندرن (773/12 %)، ترکیبات عمده ی روغن گل آن: آلفا-پینن (246/16 %)، اورتو-سیمن (522/13 %)، بتا-پینن (082/11 %) و...
Various viewpoints were proposed to explain the causes of recent years’ severe drought occurred in Yunnan and Guizhou, China. In general there are two parties of viewpoints, the Eucalyptus cause and climate change cause. I think Yunnan-Guizhou drought has been mainly caused by abnormal climate change. Eucalyptus was not significant in the formation of Yunnan-Guizhou drought. However, the forest...
the leaves of four cultivated eucalyptus species, eucalyptus microtheca var. microtheca f. muell., eucalyptus spathulata, eucalyptus largiflorens and eucalyptus torquata were collected in spring from kashan and isfahan provinces (central region of iran). after drying the plant materials in shade, their essential oils were obtained by hydro-distillation. the oils were analyzed by capillary gas c...
A set of over 8000 Diversity Arrays Technology (DArT) markers was tested for its utility in high-resolution population and phylogenetic studies across a range of Eucalyptus taxa. Small-scale population studies of Eucalyptus camaldulensis, Eucalyptus cladocalyx, Eucalyptus globulus, Eucalyptus grandis, Eucalyptus nitens, Eucalyptus pilularis and Eucalyptus urophylla demonstrated the potential of...
Eucalyptus is well reputed for its use as medicinal plant around the globe. The present study was planned to evaluate chemical composition, antimicrobial and antioxidant activity of the essential oils (EOs) extracted from seven Eucalyptus species frequently found in South East Asia (Pakistan). EOs from Eucalyptus citriodora, Eucalyptus melanophloia, Eucalyptus crebra, Eucalyptus tereticornis, E...
Eucalyptus species are well reputed for their traditional use in Asia as well as in other parts of the world; therefore, the present study was designed to investigate the antimicrobial and antioxidant activities associated with essential oils from different Eucalyptus species. Essential oils from the leaves of six Eucalyptus species, including: Eucalyptus woodwardi, Eucalyptus stricklandii, Euc...
Eucalyptus species are widely planted for reforestation in subtropical China. However, the effects of Eucalyptus plantations on the regional water use remain poorly understood. In an age sequence of 2-, 4- and 6-year-old Eucalyptus plantations, the tree water use and soil evaporation were examined by linking model estimations and field observations. Results showed that annual evapotranspiration...
For the purposes of forest restoration, carbon (C) fixation, and economic improvement, eucalyptus (Eucalyptus urophylla) has been widely planted in South China. The understory of eucalyptus plantations is often occupied by a dense community of the fern Dicranopteris dichotoma, which intercepts tree canopy leaf litter before it reaches the ground. To understand the effects of this interception o...
در این پژوهش اثر بازدارندگی اکالیپتوس (Eucalyptus golubulus Labill.) بر جوانهزنی و رشد علف هرز پنجهمرغی (Cynodon dactylon (L.) Pers.) بهصورت: الف) غلظتهای متفاوت اسانس (ppm20، ppm50، ppm100) با روش محلولپاشی، ب) مقادیر مختلف برگ (2، 5 و 10 درصد وزنی) بهصورت مالچ و مخلوط با خاک در چهار تکرار و ج) تأثیر غلظتهای مختلف اسانس (ppm20، ppm50، ppm100) و عصاره (25، 50 و 75 درصد) بر فرایند جوانهزنی...
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