نتایج جستجو برای: vegetative

تعداد نتایج: 15845  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Chuan-Yu Hsu Joshua P Adams Hyejin Kim Kyoungok No Caiping Ma Steven H Strauss Jenny Drnevich Lindsay Vandervelde Jeffrey D Ellis Brandon M Rice Norman Wickett Lee E Gunter Gerald A Tuskan Amy M Brunner Grier P Page Abdelali Barakat John E Carlson Claude W DePamphilis Dawn S Luthe Cetin Yuceer

Annual plants grow vegetatively at early developmental stages and then transition to the reproductive stage, followed by senescence in the same year. In contrast, after successive years of vegetative growth at early ages, woody perennial shoot meristems begin repeated transitions between vegetative and reproductive growth at sexual maturity. However, it is unknown how these repeated transitions...

Journal: :Tree physiology 1997
D Syamsuwida J N Owens

Small Shorea stenoptera Burck. (Dipterocarpaceae) trees of reproductive age growing in an arboretum in west Java were studied to determine the pattern of vegetative shoot development, the time and method of floral initiation and the effect of paclobutrazol on floral enhancement. Vegetative buds were enclosed by two stipules between which was a leaf primordium, a small axillary vegetative bud an...

Journal: :Advances in experimental medicine and biology 2002
Steven Laureys Marie-Elisabeth Faymonville Xavier De Tiège Philippe Peigneux Jacques Berré Gustave Moonen Serge Goldman Pierre Maque

Positron emission tomography (PET) techniques represent a useful tool to better understand the residual brain function in vegetative state patients. It has been shown that overall cerebral metabolic rates for glucose are massively reduced in this condition. However, the recovery of consciousness from vegetative state is not always associated with substantial changes in global metabolism. This f...

2012
Mongi Zekri

quality are influenced by many factors, including climatic conditions and production practices. In subtropical climates, the temperature usually falls below 70°F for several months during winter. This period of cool temperatures causes growth to cease and citrus trees to become dormant for about three months. The cool temperatures during this dormant period promote floral induction. When warm s...

Journal: :Applied and environmental microbiology 2006
Zoltán Kerényi Brigitta Oláh Apor Jeney László Hornok John F Leslie

For two fungal strains to be vegetatively compatible and capable of forming a stable vegetative heterokaryon they must carry matching alleles at a series of loci variously termed het or vic genes. Cloned het/vic genes from Neurospora crassa and Podospora anserina have no obvious functional similarity and have various cellular functions. Our objective was to identify the homologue of the Neurosp...

2017
Daniel S. Andersen Robert T. Burns Lara B. Moody Matthew J. Helmers

Increased environmental awareness has promoted the need for improved feedlot runoff control. The use of vegetative treatment systems (VTSs) to control and treat feedlot runoff may enhance environmental security and protect water quality. Knowledge of effluent nutrient concentrations throughout the vegetative treatment system is required to evaluate impact on water quality and system performance...

2015
Assaf Sukenik Iris Maldener Thomas Delhaye Yehudit Viner-Mozzini Dotan Sela Myriam Bormans

Akinetes are spore-like non-motile cells that differentiate from vegetative cells of filamentous cyanobacteria from the order Nostocales. They play a key role in the survival and distribution of these species and contribute to their perennial blooms. Here, we demonstrate variations in cellular ultrastructure during akinete formation concomitant with accumulation of cyanophycin; a copolymer of a...

2017
Abhishek Dutta Gen Lin Ajith V. Pankajam Parijat Chakraborty Nahush Bhat Lars M. Steinmetz Koodali T. Nishant

Mutation and recombination are the major sources of genetic diversity in all organisms. In the baker's yeast, all mutation rate estimates are in homozygous background. We determined the extent of genetic change through mutation and loss of heterozygosity (LOH) in a heterozygous Saccharomyces cerevisiae genome during successive vegetative and meiotic divisions. We measured genome-wide LOH and ba...

Journal: :journal of medicinal plants and by-products 0

in this study, aerial parts of lippia citriodora kunth were harvested at three phenological stages (i.e. vegetative, full flowering and fruit set). the essential oil isolated by hydro distillation for 3 h using a clevenger-type apparatus and the oil was analyzed by gc and gc-ms. the yields of oils (w/w%) in different stages was in the order of: full flowering (0.9%), vegetative (0.48%) and frui...

افتخاری, سیدعبداله , حیدری, مختار, عالمیان, معصومه, عالم‌زاده انصاری, ناصر ,

An outdoor pot experiment was carried out in sand+ coco-peat culture (80:20 ratio) to investigate the response of nitrate reductase activity and nitrate accumulation in roots and leaves of fifteen Iranian landraces of spinach (Spinacia oleracea) at different stages of plant development. Plants were tested during a three periods from 22, 30 and 38 days after emergence of first true leaves and be...

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