大叶铁线莲大小孢子发生及雌雄配子体发育

杨艺¹,王娜¹,王奎玲¹,刘庆华¹,李伟¹,郭霄¹,马颖杰²,刘庆超^1,^*(

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Megasporogenesis, Microsporogenesis and Development of Male and Female Gametophytes of Clematis heracleifolia

Yi Yang¹,Na Wang¹,Kuiling Wang¹,Qinghua Liu¹,Wei Li¹,Xiao Guo¹,Yingjie Ma²,Qingchao Liu^1,^*(

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图6. 大叶铁线莲两性花大孢子及雌配子体发育
(A), (B) 子房和胚珠; (C) 孢原细胞(箭头所示); (D) 大孢子母细胞(箭头所示); (E) 线形大孢子四分体(箭头所示); (F) 珠孔端3个大孢子退化, 合点端发育形成功能大孢子(箭头所示); (G) 二核胚囊; (H) 四核胚囊; (I) 八核胚囊; (J)-(L) 成熟胚囊7细胞8核。ac: 反足细胞; cc: 中央极核; ec: 卵细胞; sy: 助细胞。(A), (B) Bars=200 μm; (C)-(L) Bars=50 μm

Figure 6. Megaspore and megagametophyte development in bisexual flower of Clematis heracleifolia
(A), (B) The ovary and ovule; (C) Archesporial cells (arrow); (D) Megaspore mother cells (arrow); (E) A linear tetrad of megaspores (arrows); (F) The three endostome megaspores were degenerated and the chalazal one was a functional megaspore (arrows); (G) Binucleate embryo sac; (H) Tetranucleate embryo sac; (I) Embryo sac with 8 nuclei; (J)-(L) Mature embryo sac of seven-cell with eight nuclei. ac: Antipodal cell; cc: Central nucleus; ec: Egg cell; sy: Synergids. (A), (B) Bars=200 μm; (C)-(L) Bars=50 μm