نتایج جستجو برای: seed banks genetics

تعداد نتایج: 180218  

Journal: :Ecology Letters 2021

With globalisation facilitating the movement of plants and seeds beyond native range, preventing potentially harmful introductions requires knowledge what drives successful establishment spread alien plants. Here, we examined global-scale relationships between naturalisation success (incidence extent) invasiveness, soil seed bank properties (type densities) key species traits (seed mass, dorman...

Journal: :Journal of Theoretical Probability 2021

We consider a system of interacting Moran models with seed-banks. Individuals live in colonies and are subject to resampling migration as long they $active$. Each colony has seed-bank into which individuals can retreat become $dormant$, suspending their until active again. The labelled by $\mathbb{Z}^d$, $d \geq 1$, playing the role $geographic\, space$. sizes dormant population $finite$ depend...

Journal: :Forests 2022

The objectives of this study were to evaluate woody-species composition and seed density in the soil bank (SSB) a dry subtropical forest with different disturbance regimes assess role leaf litter as reservoir disturbed forests. Study area: western Argentine Chaco region. Climate is seasonal semiarid, fire season coincides cool periods. In first step, we evaluated species soils forests four comb...

2007
Shunli Yu Marcelo Sternberg Pua Kutiel Hongwei Chen

Question: Are seed mass and shape related to persistence in the soil seed bank among 54 species of the Israeli flora? Search method: Persistence was determined by soil seed bank investigations in which the fraction of non-germinated viable seeds was regarded as the persistent soil seed bank. When seedling emergence had ceased but before new seeds were shed, all soil from the upper 5 cm of 120 q...

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

روانگرایی در ماسه های ریزدانه اشباع در هنگام زلزله، موجب خرابی سازه های زیادی در نقاط مختلف دنیا بوده است. از عوامل موثر در این پدیده می توان به تراکم خاک، دانه بندی خاک، عمق لایه مورد نظر و تنش های موثر همه جانبه، شدت و مدت زمان زمین لرزه و درصد عبوری از الک شماره 200 (مقدار ریزدانه و جنس آن) اشاره نمود. عالباً در روشهای رایج ارزیابی وقوع روانگرایی از خصوصیات درجای خاک، همانند نتایج آزمایش های ...

2012

The research objective for production of quality cottonseed that has been a major concern of cottonseed researchers for many years is to: "Identify the genetic variability of cottonseed composition, determine the genetic control of cottonseed traits, and develop preferred cotton· seed quality germplasm; develop an understanding of developmental processes of the plant that leads to improved cott...

2014
Eliot M. Herman

The soybean seed's protein content and composition are regulated by both genetics and physiology. Overt seed protein content is specified by the genotype's genetic framework and is selectable as a breeding trait. Within the genotype-specified protein content phenotype soybeans have the capacity to rebalance protein composition to create differing proteomes. Soybeans possess a relatively standar...

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