(botany) The property of having the pollen tube in a seed plant enter the ovule by way of the micropyle.
1898, , Science , The subject of Chalazogamy in Casuarina was discussed somewhat in detail, the speaker taking exception to Nawaschin's theory that Chalazogamy is a primitive type of fecundation from which porogamy has been developed.
1973 , Parameswaran Krishnan Kutty Nair, ‎Rajendra Kumar Grover, ‎& Thomas Meprethu Varghese , Glimpses in Plant Research - Volume 1 , No statistical records are presently available about the plants showing porogamy, chalazogamy or mesogamy, in angiosperms.
1996, Jules Janick & ‎James N. Moore , Fruit Breeding, Nuts , The pollen tube may enter the ovule either via the chalaza (chalazogamy) (Billings 1903) or via the micropyle (porogamy) (Woodroof 1928).
