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Biology 215

Biology 215. Plants for Pleasure & Profit. Why horticulture?. Economical Value Enhanced property value Reduced costs Can provide a career , living Exercise. Why horticulture?. Emotional value. Why horticulture?. Provide animal habitat. Horticulture is a business. Park Seeds

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Biology 215

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  1. Biology 215 Plants for Pleasure & Profit

  2. Why horticulture? • Economical • Value • Enhanced property value • Reduced costs • Can provide a career, living • Exercise

  3. Why horticulture? • Emotional value

  4. Why horticulture? • Provide animal habitat

  5. Horticulture is a business • Park Seeds • Jackson & Perkins • Lancaster Farms • Encore azaleas • Witherspoon Roses • Plant Delights

  6. Horticulture is a science • NCSU Horticulture • Horticulture information leaflets • Journals • Journal of the American Society of Horticultural Science • Journal of Horticultural Science & Biotechnology

  7. Plant Classification • Botanical • Horticultural

  8. Scientific & binomial nomenclature Brassica oleracea cv. Green Comet Lycopersicon esculentum cv. Better Boy Hibiscus syriacus ‘Diana’

  9. Phlox P. paniculataP. subulata

  10. Growth cycles

  11. Growth cycles • Annuals

  12. Growth cycles • Biennials

  13. Growth cycles • Perennials

  14. Growth cycles • Monocarps

  15. Growth habit classification procumbent erect Spreading Arching Vertical climbing

  16. Ornamental plant classifications • Herbaceous vs. woody • Flowering vs. foliage • Hardiness zones

  17. Herbaceous plants • Annuals, biennials, perennials

  18. Woody plants • Vines • Shrubs • Trees

  19. Shrubs

  20. Trees

  21. Flowering vs. foliage plants

  22. Hardiness classification

  23. Plant anatomy

  24. Dicots Monocots

  25. storage roots

  26. Mycorrhizae fungal association (mutualistic) with roots

  27. Stems Stem functions • Support • Conduction • Growth

  28. Leaves Leaf Functions? • Photosynthesis • Conduction • Protection

  29. Leaf characteristics

  30. Flowers Organs for reproduction

  31. Flower anatomy

  32. Perfect vs. imperfect flowers • Perfect – having both male and female parts • Imperfect – lacking male or female parts

  33. Imperfect flowers • Monoecious species • Staminate and pistillate flowers on the same plant • Oaks, maples, pines, corn, melons, figs, pecans (dichogamous)

  34. Imperfect flowers • Dioecious species • Staminate and pistillate flowers on separate plants • Gingko, kiwi, persimmon, cannabis

  35. Flower development • The ABC model of flower development • A,B,C = differententially expressed MADS box genes (transcription factors)

  36. Flowers may lack specific flower parts due to mutations in A, B, or C genes

  37. Flowers are contained on an inflorescence

  38. Determinate vs. indeterminate inflorescences • Determinate – stem growth ends with a flower(s) • Indeterminate – flowers produces along stem (at nodes), stem tip continues to grow

  39. Timing of flowering • How does a plant “know” when to flower? • Light (intensity and/or daylength) • Temperature • Hormones

  40. Flower pollination and fertilization

  41. Self-incompatibility

  42. Fruit anatomy

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