نتایج جستجو برای: seed plumpness

تعداد نتایج: 76481  

2014
Bo Wang Xiaolan Yang

Scatter-hoarding rodents are known to play a crucial role in the seed dispersal of many plant species. Numerous studies have indicated that both seed size and the energy content of seeds can affect rodent foraging behavior. However, seed size is usually associated with energy content per seed, making it difficult to isolate how seed size and energy affect rodent foraging preferences. This study...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم پایه 1392

یکی از کاربردهای ید-125، استفاده در درمان تومورهای مغزی با استفاده از روش تزریق این مایع رادیواکتیو در داخل بالون gilia site می باشد که قبلاً در موضع تومور جراحی شده جایگزین گردیده است. اکتیویته مورد استفاده در این درمان در محدوده چند صد میلی کوری می باشد لذا دزیمتری برای بیمار و پرسنل در این روش درمانی بسیار حائز اهمیت است. کار اصلی در این پایان نامه تعیین دز دریافتی به وسیله شبیه سازی در فوا...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی 1392

پدیده روانگرایی از جمله مخاطرات ژئوتکنیکی مهم در زمین های دارای خاکهای ماسه ای ریزدانه اشباع در هنگام وقوع زلزله است که یکی از مهمترین پارامترهای موثر در آن میزان تراکم نسبی خاک است. از اینرو در بسیاری از روشهای تجربی ارزیابی پتانسیل روانگرایی از معیارهای تراکمی درجای این لایه ها همانند نتایج آزمایش های درجای spt و cpt استفاده می شود. از جمله این موارد می توان به روش سید و ایدریس (seed &idriss,...

2010
Todd C. Esque James A. Young Richard Tracy

A Mojave Desert shrub community was experimentally burned to understand changes in seed bank of desert annual plant species in response to wildfire. Seed mortality ranged from 55 to 80%, and fire caused significant losses of native and alien annual seeds. Schismus arabicus, Schismus barbatus, Bromus madritensis, Bromus tectorum, Erodium cicutarium and Plantago spp. made up >95% of the seed bank...

2015
Kim Valenta Travis S. Steffens Radoniaina R. Rafaliarison Colin A. Chapman Shawn M. Lehman

Rapid deforestation has fragmented habitat across the landscape of Madagascar. To determine the effect of fragmentation on seed banks and the potential for forest regeneration, we sampled seed viability, density and diversity in 40 plots of 1 m in three habitat types: forest fragments, the near edge of continuous forest, and deforested savanna in a highly fragmented dry deciduous forest landsca...

2014
andPedro Jordano

1. Assessing dispersal events in plants faces important challenges and limitations. A methodological issue that limits advances in our understanding of seed dissemination by frugivorous animals is identifying ‘which species dispersed the seeds’. This is essential for assessing how multiple frugivore species contribute distinctly to critical dispersal events such as seed delivery to safe sites, ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1990
suleiman afsharypour g. brine lockwood

brassica napus l. and sinapis alba l. are two cruciferous species for which some medicinal uses are mentioned in the iranian, indian and chinese traditional medicine. seed oil of  b. napus has cathartic action, and is either used as such or after partial hydrogenation for cooking, shortening or as margarines. sees of s. alba have also cathartic action and some other medicinal uses but, because ...

2014
Milton J. Haar Jack Dekker

The dormancy status of S. faberi seed at abscission was assessed with reference to tiller and panicle development. Seed from a single genetic line were grown under field, greenhouse and controlled environment growth chamber conditions. At abscission, a small fraction (<10%) of S. faberi seed germinated under favorable conditions. Seed were dissected and germination of caryopses and embryos also...

2014
R. Jacob

The effect of seed size on germination and early growth of maize plant, was examined within three weeks to determine the best seed size require for planting. The larger size seed produced significant growth compared to medium size and small size. The seedling height, seedling width, and seedling biomass increased in larger size seed. The significant growth observed in larger size seed showed th...

2017
Juan Du Shoudong Wang Cunman He Bin Zhou Yong-Ling Ruan Huixia Shou

To understand the gene expression networks controlling soybean seed set and size, transcriptome analyses were performed in three early seed developmental stages, using two genotypes with contrasting seed size. The two-dimensional data set provides a comprehensive and systems-level view on dynamic gene expression networks underpinning soybean seed set and subsequent development. Using pairwise c...

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