Search results
Results From The WOW.Com Content Network
Porphyry made the emperors unapproachable in terms of power and nature, belonging to another world, the world of the mighty gods, present for a short time on earth. [30] Porphyry also stood in for the physical purple robes Roman emperors wore to show status, because of its purple colouring.
A plant which completes its life cycle (i.e. germinates, reproduces, and dies) within two years or growing seasons. Biennial plants usually form a basal rosette of leaves in the first year and then flower and fruit in the second year. bifid Forked; cut in two for about half its length. Compare trifid. bifoliate
Male-fertile non-GM plants must then be grown with the GM crop to ensure pollination. In some cases, a xenia effect due to the genetic difference between the two strains has been observed that increases grain yield, and could make it financially viable to grow the male-sterile plants in such a mixture.
Some plants also form smaller tubers or tubercules that act like seeds, producing small plants that resemble (in morphology and size) seedlings. Some stem tubers are long-lived, such as those of tuberous begonias , but many plants have tubers that survive only until the plants have fully leafed out, at which point the tuber is reduced to a ...
A key event in the conservation of plant genetic resources was the establishment of the International Board for Plant Genetic Resources (IBPGR) (now Bioversity International) in 1974, whose mandate was to promote and assist in the worldwide effort to collect and conserve the plant germplasm needed for future research and production. IBPGR ...
Porphyry (geology), an igneous rock with large crystals in a fine-grained matrix, often purple, and prestigious Roman sculpture material; Shoksha porphyry, quartzite of purple color resembling true porphyry mined near the village of Shoksha, Karelia, Russia; Porphyritic, the general igneous texture of a rock with two distinct crystal ...
SlideShare is an American hosting service, now owned by Scribd, for professional content including presentations, infographics, documents, and videos. Users can upload files privately or publicly in PowerPoint, Word, or PDF format. Content can then be viewed on the site itself, on mobile devices or embedded on other sites.
Often the plant can modulate its diversity based on the benefits in terms of growth and health, such as with plant growth-promoting rhizobacteria. [46] Nevertheless, a large number of nutrients issued by the plant can be of interest to pathogenic organisms, which can take advantage of plant products for their survival in the rhizosphere. [47] [41]