نتایج جستجو برای: natural plants

تعداد نتایج: 661464  

2014
Stuart J. Vincent Brenda A. Coutts Roger A. C. Jones

The ever increasing movement of viruses around the world poses a major threat to plants growing in cultivated and natural ecosystems. Both generalist and specialist viruses move via trade in plants and plant products. Their potential to damage cultivated plants is well understood, but little attention has been given to the threat such viruses pose to plant biodiversity. To address this, we stud...

2007
Stefan Bornhofen Claude Lattaud

In current virtual worlds, plants are most often represented as static objects or, at best, morphological structures endowed with a simple set of growth rules. This paper presents an enhanced plant model for virtual worlds based on Artificial Life concepts. The virtual plants capture light and assimilate minerals from the environment, and their development is ruled by a set of genetic informati...

Natural-based drugs are the important bioactive substances that have been used for prevention and treatment of diseases. Natural products should be prepared in commercial scale from relevant medicinal plants. Hence, large amounts of the plants have been needed for extraction and isolation of compounds of natural origin. Plant cells technology is the best strategy for the production of the plant...

2012
Cesar Rodriguez-Saona Brett R. Blaauw Rufus Isaacs

Plants are not capable of running away from their enemies, i.e., the herbivores that may eat them. However, under certain circumstances, plants can rely on the natural enemies of insect herbivores for protection. These natural enemies include other insects that are predators and parasitoids. To help protect plants from damage caused by insect herbivores, practical methods have been developed an...

Journal: :Planta medica 2018
Mayuree Kanlayavattanakul Nattaya Lourith

Skin hyperpigmentation is caused by several factors that upregulate melanogenesis. Plants and natural products with skin-whitening effects are gaining interest among consumers and researchers because they are perceived to be milder, safer, and healthier than synthetic alternatives. This review extensively summarizes the status of plants and natural products currently used in skin-whitening cosm...

2011
V. V. Shabanov

1. Development cycles of methods of complex reclamation regulation. 1.1. Kinds of land reclamation 2. Principles of mathematical models for optimizing environmental conditions of plants and edaphic biota 2.1. General representation of curves of environmental requirements of plants 2.2. Theoretical principles of deriving the dependence between the requirements of plants and soil conditions 3. Ma...

Journal: :بوم شناسی کشاورزی 0
قربانعلی اسدی رضا قربانی سرور خرم دل

russian knapweed (acroptilon repens l.) is a perennial weed of aceraceae that is becoming a dominant weed in suitable conditions. in order to find an ecological non-chemical approach for controlling russian knapweed and studying the possibility of using flower-eater mite (aceria acroptiloni shevchenko & kacalev) (acari: eriophyidae), a series of studies including field survey and field experime...

Journal: :Proceedings. Biological sciences 2014
Aino Kalske Anne Muola Pia Mutikainen Roosa Leimu

Inbreeding can profoundly affect the interactions of plants with herbivores as well as with the natural enemies of the herbivores. We studied how plant inbreeding affects herbivore oviposition preference, and whether inbreeding of both plants and herbivores alters the probability of predation or parasitism of herbivore eggs. In a laboratory preference test with the specialist herbivore moth Abr...

Journal: :Acta biochimica Polonica 2013
Laura Pistelli Cecilia Noccioli Francesca D'Angiolillo Luisa Pistelli

Aromatic plant species present in the natural Park of Tuscany Archipelago are used as flavoring agents and spices, as dietary supplements and in cosmetics and aromatherapy. The plants are usually collected from wild stands, inducing a depletion of the natural habitat. Therefore, micropropagation of these aromatic plants can play a role in the protection of the natural ecosystem, can guarantee a...

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