pollen flow

См. также в других словарях:

• Gene flow — In population genetics, gene flow (also known as gene migration) is the transfer of alleles of genes from one population to another.Migration into or out of a population may be responsible for a marked change in allele frequencies (the proportion …   Wikipedia

• Honey flow — is a term used by beekeepers indicating that one or more major nectar sources are in bloom and the weather is favorable for bees to fly and collect the nectar in abundance. The northern or southern latitudes with its longer summer day time hours… …   Wikipedia

• Self-incompatibility in plants — Self incompatibility (SI) is a general name for several genetic mechanisms in angiosperms, which prevent self fertilization and thus encourage outcrossing. In plants with SI, when a pollen grain produced in a plant reaches a stigma of the same… …   Wikipedia

• Nectar robbing — Bombus terrestris stealing nectar. Nectar robbing refers to the act by an animal, typically an insect or a bird, of removing nectar from a flowering plant, most often by drilling a hole in the corolla. In this way animals without morphological… …   Wikipedia

• Autoincompatibilidad — Saltar a navegación, búsqueda La fecundación en las Angiospermas es un proceso com …   Wikipedia Español

• Co-existence of genetically modified and conventional crops and derived food and feed — In the context of agriculture and food and feed production, co existence means using cropping systems with and without genetically modified organisms (GMOs) in parallel. For co existence to be assured, the separation and the identity of the… …   Wikipedia

• Norris H. Williams — Nacimiento 1943 Nacionalidad …   Wikipedia Español

• Genetic assimilation — Note: Genetic assimilation is sometimes used to describe eventual extinction of a natural species as massive pollen flow occurs from another related species and the older crop becomes more like the new crop.… …   Wikipedia

• flower — /flow euhr/, n. 1. the blossom of a plant. 2. Bot. a. the part of a seed plant comprising the reproductive organs and their envelopes if any, esp. when such envelopes are more or less conspicuous in form and color. b. an analogous reproductive… …   Universalium

• angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium