| 释义 |
porogamy
porogamy (pɔːˈrɒɡəmɪ) n (Botany) botany the fertilization of a seed plant involving passage of the pollen tube into the ovule by the micropylePorogamy
porogamy[pȯ′räg·ə·mē] (botany) Passage of the pollen tube through the micropyle of an ovule in a seed plant. Porogamy the usual route by which a pollen tube enters an ovule—via the micropyle—in the fertilization of angiospermous and gymnospermous plants. When the pollen tube penetrates the ovule by a different route, the process is called aporogamy (for example, penetration of the chalaza is known as chalazogamy). |