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CONIFERS Pines (Pinus). Abies (Fir) Pseudotsuga (Douglas Fir)

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Text of CONIFERS Pines (Pinus). Abies (Fir) Pseudotsuga (Douglas Fir)

  • CONIFERSPines (Pinus)

  • Abies (Fir)

  • Pseudotsuga (Douglas Fir)

  • Picea (Spruce)

  • Juniperus (Juniper)

  • Cupressus (Cypress)

  • Sporophyte

  • Primary Growth: Shoot Apex

  • Primary Growth: Stele

  • Endarch Xylem DevelopmentPrimary Growth: Xylem

  • (Circular Bordered Pits)Fig. 17-17 in Gifford and Foster 1989Xylem: Tracheids

  • Xylem: Bordered Pit PairsFig. 17-17 in Gifford and Foster 1989

  • Phloem: Sieve Elements = Sieve CellsFig. 3-18 in Gifford and Foster 1989

  • Leaf Anatomy I

  • Leaves: One Vein versus Two VeinsSoft Pines (Pinon Pines, Southwestern White Pine)Hard Pines (Ponderosa Pine,Chihuahua Pine)

  • Leaf Anatomy II

  • Conifer Shoot Secondary Growth

  • Roots

  • Root Primary Growth

  • Root Secondary Growth

  • Megasporogenesis: Megastrobilus(Bract, Ovuliferous Scale)

  • MegasporogenesisOvule (= Integument + Megasporangum), Megasporocyte (2n)(Bract, Ovuliferous Scale)

  • Fig. 17-28 in Gifford and Foster 1989Putative Origin of Compound Female Cone I(Lebachia, Ernestiodendron)

  • Putative Origin of Compound Female Cone II(Pseudovoltzia, Voltzia)Fig. 17-29 in Gifford and Foster 1989

  • Megasporogenesis: Meiosis, 4 Megaspores (1n)

  • Integument

    Micropyle

    Megasporangium

    Pollen Chamber

    Functional Megaspore

    Megasporogenesis: Meiosis, 4 Megaspores (1n)

  • Megagametogenesis: Free Nuclear Stage

  • Megagametogenesis: Cellular Stage (with Archegonia)

  • Megagametogenesis: Archegonia1-6 Archegonia / Gametophyte

    1-2 Tiers of Four Neck Cells

    Egg Cell Covered by Layer of Cells

  • Microsporogenesis(Microsporophyll, Microsporangium)

  • Microsporogenesis(Microsporophyll, Microsporangium)

  • Microsporogenesis(Microsporophyll, Microsporangium)

  • Fig. 23-24 in Bold et al. 1987Microgametogenesis I(Inside the Microsporangium) Prothallial Cell 1 Prothallial Cell 2 Generative Cell Tube Nucleus

  • Microgametogenesis II(After Pollination)Fig. 23-24 in Bold et al. 1987 Generative Cell (Ultimately, Body Cell and Stalk Cell) Body Cell (Ultimately, Sperm Cells 1 and 2) Stalk Cell

  • FertilizationFig. 17-37a in Gifford and Foster 2010

  • Early EmbryogenyFig. 17-37 C-G in Gifford and Foster 1989

  • Early Embryogeny

  • Fig. 17-37 H-I in Gifford and Foster 1989Embryonal Suspensors

  • Fig. 17-37 J in Gifford and Foster 1989Cleavage Polyembryony

  • Mature Embryo inside SeedFig. 17-36 in Gifford and Foster 2010

  • Ponderosa Pine Seeds

  • Pine Reproductive CycleFig. 17-30 in Gifford and Foster 1989

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