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Fig. 5 | BMC Plant Biology

Fig. 5

From: Sporogenesis, gametophyte development and embryogenesis in Glehnia littoralis

Fig. 5

Megasporogenesis and female gametophyte development of G. littoralis. a The ovule primordial appeared. b Ovule primordial growth. c Differentiation of nucellar cells. d Megaspore mother cell appeared. e Meiotic prophase of megaspore mother cell. f, g Dyad. h Linear tetrad. i T-shaped tetrad. j Three megaspore at micropylar end degenerated. k Mononuclear embryo sac stage. l-o Binuclear embryo sac stage. p Tetranuclear embryo sac stage. q-t Eight-nuclear embryo sac stage. Op: ovule primordium, in: integument, nu: nucellus, mmc: megaspore mother cell, ec: egg cell, sy: synergid, pn: polar nucleus, ac: antipodal cell. Scale bar = 30 μm in c, e and g-j; scale bar = 40 μm in d, f and l; scale bar = 50 μm in a, b, k, m-r and t; scale bar = 80 μm in s

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