Dry matter accumulation, nitrate reductase activity of various organs, nitrate accumulation, nitrogen derived from nitrate, and nitrogen content were studied during 17 days of vegetative regrowth of harvested (detopped) alfalfa (Medicago sativa L.). Seedlings were grown in the glasshouse and treated with 0, 40, and 80 kilograms N per hectare applied as K(15)NO(3) to determine whether reduced ni...

The current investigation concluded an anatomical study of the cultivated species Pelargonium graveolens L. 'Hér belong to Geraniaceae family and which as ornamental plant, fresh specimen were collected from different region in Baghdad ,the vegetative parts (leaf, stem petiole) details upper lower epidermis leaf also studied, ordinary epidermal cells stomatal complexes studied term shapes dimen...

The Research Institute for Plant Genetic Resources is the national center global genetic resources of cultivated plants and their wild relatives, which are preserved in form collections status, represented by seeds, vegetative reproductive organs parts plants, herbarium specimens, as well plantations perennial crops. Collections numbering more than 43 thousand accessions concentrated here over ...

The net partitioning of current photosynthate among vegetative organs of nodulated alfalfa (Medicago sativa L.) was investigated by determining radiolabel distribution from upper and lower source leaves, at different times of day, and during successively longer chase periods. Photosynthate was exported sooner and more completely by a fully expanded lower than by a fully expanded upper source le...

Theoretical models on mutualism dynamics predict that partner traits may influence the outcome of mutualistic interactions. However, most empirical data this issue is restricted to case studies, limiting our ability reach a more widespread comprehension role dynamic mutualisms. We investigated how protective mutualisms between ants and plants bearing extrafloral nectaries (EFNs) influenced by E...

The present study has been conducted in the Moscow region. It is necessary to understand how individual plant organs of invasive species Impatiens L. (Balsaminaceae) can be promising for further study, with aim using them as sources medicines. Plant material was collected during flowering time and at beginning fruiting (September, 2019–2020): glandulifera Royle (Himalayan Balsam) studied 3 popu...

The current tools of enquiry into the structure and operation of the plant genome have provided us with an understanding of plant development and function far beyond the state of knowledge that we had previously. We know about key genetic controls repressing or stimulating the cascades of gene expression that move a plant through stages in its life cycle, facilitating the morphogenesis of veget...

Plants synthesize and emit a large variety of volatile organic compounds, which possess extremely important ecological functions. In most case, most plant volatiles are liquids, rather than gases, at room temperature. Some volatiles are emitted "on demand" when plants, especially vegetative parts, are exposed to abiotic or biotic stress. In this review, we summarize some of the highlights of pl...