Transmission Electron Micrographs of Microspores from the Wild Type and
cep1 Mutant.
Microspores of the six developmental stages in the wild type ([A]
to [G]) and cep1 mutant ([H] to
[N]). (A) and (H), stage 7;
(B) and (I), stage 8; (C) and
(J), stage 9; (D) and (K), stage 10;
(E) and (L), early stage 11; (F) and
(M), late stage 11; (G) and (N),
stage 12. C, callose; En, endothecium; Ex, exine; GC, generative cell; In,
intine; N, nucleus; SC, sperm cell; T, tapetal cell; Tds, tetrads; V, vacuole;
VC, vegetative cell. Bars = 2 μm.