Vegetative Reproduction, Spore Formation YouTube Lecture Handouts

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Asexual Reproduction: Fission, Regeneration, Budding, Vegetative Reproduction, Spore, Tissue Culture

Vegetative Reproduction

Vegetative Reproduction

Vegetative Reproduction
  • Vegetative Reproduction – Bryophyllum, sugarcane, roses, or grapes – through stem, roots and leaves
  • Plants raised by vegetative propagation can bear flowers and fruits earlier than those produced from seeds. Such methods also make possible the propagation of plants such as banana, orange, rose, and jasmine that have lost the capacity to produce seeds. Another advantage of vegetative propagation is that all plants produced are genetically similar enough to the parent plant to have all its characteristics.
  • Tissue Culture: In tissue culture, new plants are grown by removing tissue or separating cells from the growing tip of a plant. The cells are then placed in an artificial medium where they divide rapidly to form a small group of cells or callus. The callus is transferred to another medium containing hormones for growth and differentiation. The plantlets are then placed in the soil so that they can grow into mature plants. Using tissue culture, many plants can be grown from one parent in disease-free conditions. This technique is commonly used for ornamental plants.
Vegetative Reproduction

Spore Formation

Spore Formation

Spore Formation

The thread-like structures that developed on the bread above are the hyphae of the bread mould (Rhizopus) . They are not reproductive parts. On the other hand, the tiny blob-on-a-stick structures are involved in reproduction. The blobs are sporangia, which contain cells, or spores, that can eventually develop into new Rhizopus. Spores are thick walled and get moist and tend to grow. Dry slice of bread offers nutrients but not moisture hence hyphae fail to grow. Moisture is an important factor for the growth of hyphae.

Spore Formation

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