PD formation in the field. (A) PD production during pollination; (B) PD exuding from the micropyle. Le, leaf; Lh, long shoot; Mi, micropyle; O, ovule; PD, pollination drop; Sh, short shoot; S, stalk. Scale bars: A = 1 cm; B = 200 μm.
Jin et al. BMC Plant Biology 2012 12:59 doi:10.1186/1471-2229-12-59