RACING POLLEN TUBES. “The reproductive strategy of flowering plants is different and involves competition among growing pollen tubes to enter one ovule and to deliver their sperm cell cargo. The first pollen tube that enters an ovule usually releases its cargo and one sperm cell fuses with the egg cell forming the embryo while the second sperm cell fertilizes the central cell to generate the endosperm. Later-arriving pollen tubes do not enter already targeted ovules.”
http://www.sciencedirect.com/science/article/pii/S096098221200468X
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022