Podcast
Questions and Answers
Which specialized vegetative structure allows plants to reproduce by causing the stem to produce adventitious roots?
Which specialized vegetative structure allows plants to reproduce by causing the stem to produce adventitious roots?
- Rhinanthus
- Bulbs
- Runners
- Stolons (correct)
What type of propagation is used for Pineapple and Banana due to their inability to produce seeds?
What type of propagation is used for Pineapple and Banana due to their inability to produce seeds?
- Cuttings
- Grafting
- Tissue culture (correct)
- Layering
How does vegetative propagation help in maintaining superior genotypes in plants like Tea and Rubber?
How does vegetative propagation help in maintaining superior genotypes in plants like Tea and Rubber?
- By promoting seed production
- By inducing genetic variations
- By producing identical offspring (correct)
- By encouraging cross-pollination
In vegetative propagation, what is the main advantage of being able to combine different genotypes to form a superior genotype?
In vegetative propagation, what is the main advantage of being able to combine different genotypes to form a superior genotype?
Why is vegetative propagation considered a rapid method for propagating valuable cultivars?
Why is vegetative propagation considered a rapid method for propagating valuable cultivars?
What is a key advantage of vegetative propagation during unfavorable environmental conditions?
What is a key advantage of vegetative propagation during unfavorable environmental conditions?
What is the advantage of using budding in roses?
What is the advantage of using budding in roses?
Why might vegetative propagation pose a threat to biodiversity?
Why might vegetative propagation pose a threat to biodiversity?
Which method involves regeneration from vegetative parts detached from the plant?
Which method involves regeneration from vegetative parts detached from the plant?
What is a disadvantage of vegetative propagation compared to seed propagation?
What is a disadvantage of vegetative propagation compared to seed propagation?
Which naturally present vegetative structure involves food storage for plant survival?
Which naturally present vegetative structure involves food storage for plant survival?
Why is layering considered an effective method of vegetative propagation?
Why is layering considered an effective method of vegetative propagation?
What is a key advantage of using root cuttings for plant propagation?
What is a key advantage of using root cuttings for plant propagation?
Why is it recommended to take root cuttings during plant dormancy?
Why is it recommended to take root cuttings during plant dormancy?
What distinguishes the method of propagating plants with large roots from those with small roots?
What distinguishes the method of propagating plants with large roots from those with small roots?
What is a characteristic of plants derived from root cuttings?
What is a characteristic of plants derived from root cuttings?
In propagation by layering, what is the 'layer' referred to?
In propagation by layering, what is the 'layer' referred to?
Why is layering considered an effective method of vegetative propagation?
Why is layering considered an effective method of vegetative propagation?
Study Notes
Vegetative Propagation
- Economical method of propagating certain horticultural crops, e.g., Roses, Hibiscus
- Minimizes incidence of disease and pests in certain crops by budding susceptible species onto resistant rootstocks, e.g., Grapes
Advantages of Vegetative Propagation
- Produces identical offspring plants to the parent plant, ensuring true-to-type progeny
- Results in uniformity of the plant population, with genetic variation absent among progeny
- Allows propagation of plants that produce little or no seeds, e.g., Pineapple, Banana
- Enables combination of different genotypes to form a superior genotype, overcoming genetic incompatibility issues
- Facilitates rapid propagation of valuable cultivars, avoiding juvenile stage, sexual cycle, seed dormancy, and long maturation
- Shortens the time to flower, as cultivars initiate growth at a mature phase, avoiding juvenile stages
Disadvantages of Vegetative Propagation
- Lack of genetic variation may lead to plants gradually losing their vigor, posing a potential impact on biodiversity
- Developing new varieties/cultivars cannot be achieved
- Some methods can be expensive, time-consuming, and require expertise
- Multiplication of undesirable characters, making the entire crop susceptible to the same disease, e.g., Banana
Methods of Vegetative Propagation
- Propagation by naturally present specialized vegetative structures, e.g., bulbs, corms, tubers, rhizomes, tuberous roots
- Induction of adventitious roots or shoots:
- Cutting propagation: Regeneration from vegetative parts detached from the plant
- Layering: Regeneration from vegetative parts while attached to the plant
- Totipotency: Capacity of a single cell to reproduce an entire plant through mitotic division
Root Cuttings
- Used for plants with large roots, taking a straight top cut and a slanted cut at 2’’ to 6’’ below the first cut
- Used for plants with small roots, taking a root section of 1’’ to 2’’ and inserting horizontally about ½’’ below the medium surface
- Requires enough food reserves (carbohydrates) to ensure survival and regeneration
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Learn about the benefits and drawbacks of vegetative propagation in horticultural crops such as roses, Hibiscus, and grapes. Understand how this method can be used economically for certain plants and how it can help minimize disease and pest issues. Discover the potential loss of genetic variation and vigor that can occur with this type of propagation.
