BATTLE OF POLLEN TUBES. “In the grasses, multiple pollen tubes exit the transmitting tract in a race to reach the female gametophyte. The fastest-growing pollen tube penetrates the micropyle and releases its contents into the receptive synergid. Additional pollen tubes seem to be repelled, as heterofertilization, which indicates that sperm cells of two different pollen tubes have fused with both female gametes, is very rare in maize (about 1%).”
http://www.sciencedirect.com/science/article/pii/S1674205214608996
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022