PLANT CYTOLOGY


Page 1. ANGIOSPERMAE : FLOWERING PLANTS

A. Cell nucleus, cell division, chromosomes

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DNA and RNA, thin l.s. from Allium root tips, specially fixed & stained with methylgreen & pyronine shows DNA & RNA in diff. color

Meiosis, t.s. of Lilium anthers showing different stages of meiotic divisions

Epidermal cells of Allium cepa (onion), flat mount shows typical plant cells with nuclei, cytoplasm and cell walls

Epidermal cells of Allium cepa, plasmolysis, w.m. turgid piece and plasmolized piece of onion epidermis for comparison

Epidermal cells of Allium cepa, w.m. of bulb scale epidermis, unstained preparation special mounted for phase contrast observation

Mitosis, l.s. from Allium root tips showing all stages of plant mitosis carefully stained with iron-hematoxyline after Heidenhain

Mitosis, l.s. from Allium root tips showing all stages of plant mitosis carefully stained with a quadruple stain

Mitosis, l.s. from Allium root tips showing all stages of plant mitosis, specially stained with fuchsin and fast green

Mitosis, l.s. from Allium root tips showing all stages of plant mitosis stained by Feulgen stain

Mitosis, l.s. from Hyacinthus root tips showing all stages of plant mitosis; stained w/ a quadruple stain. shows large chromosomes.

Mitosis, l.s. from Vicia faba (bean) root tips showing all mitotic stages

Mitosis, squash preparation from Allium root tip, shows intact mitotic stages, Feulgen stain

Mitosis, squash preparation from Allium root tip, shows intact mitotic stages, orceine stained

Mitosis, squash preparation from Allium root tip, treated with colchicines for metaphase stages, orceine stained

Mitosis, squash preparation from Vicia faba root tips, showing intact mitotic stages, Feulgen stain

Mitosis, t.s. from Allium root tips showing all stages of plant mitosis in polar view

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B. Cell organelles

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Chloroplasts, in sec. of Tradescantia shoot

Chloroplasts, w.m. of leaf of Elodea or Spinacea showing detail of large chloroplasts

Chromoplasts, in w.m. of piece of petal from Tropaeolum

Chromoplasts, t.s. of root of Daucus carota (carrot)

Chromoplasts, w.m. of petal of Viola (violet)

Epidermal cells of Allium cepa, specially fixed and stained to show the mitochondria

Mitochondria, thin l.s. of Allium root tips specially fixed and stained to show the mitochondria clearly

Plasmodesmata , in t.s. of palm seed (Phytelephas)

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C. Inclusions: Reserve and storage substances

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Aleurone grains, sec. of Ricinus endosperm

Aleurone grains, t.s. of seed and cotyledons of Evonymus

Corroded starch grains, w.m. from potato

Fat, t.s. of endosperm of Corylus (hazel) stained for fat

Reserve cellulose, t.s. seed of Phoenix (date)

Starch grains, different kinds of mixed species w.m.

Starch grains, sec. of tuber of Solanum tuberosum (potato)

Starch grains, smear from Euphorbia (spurge)

Starch grains, t.s. cotyledons of Vicia faba (bean)

Starch grains, t.s. of semen (grain) of Avena (oat)

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D. Inclusions: Crystals and metabolic products

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Acid tannic, t.s. bark of Rosa

Calcium oxalate crystals in w.m. of dry Allium scale

Clustered crystals, t.s. stem of Opuntia

Crystal sand, t.s. of Solanum tuberosum (potato) leaf

Cystoliths, t.s. leaf of Ficus elastica, India rubber plant

Inulin crystals, t.s. of tuber of Dahlia

Raphid cells with growing raphids, l.s. root tips of Hyacinthus

Raphides, t.s. of Impatiens leaf

Raphides, t.s. of Oxalis leaf

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