Podcast
Questions and Answers
Which of the following best describes physical/mechanical techniques used in mutation breeding?
Which of the following best describes physical/mechanical techniques used in mutation breeding?
- They generate and utilize genetic variability through chemical mutagenesis.
- They involve selection for plant height and disease resistance
- They determine shape, size, weight, and density of seeds. (correct)
- They involve the use of electromagnetic radiation.
Which of the following is the most effective technique in mutation breeding?
Which of the following is the most effective technique in mutation breeding?
- Chemical mutation breeding
- Visual/phenotypic techniques (correct)
- Physical mutagens
- Physical/mechanical techniques
What is chemical mutation breeding?
What is chemical mutation breeding?
- The development of new varieties by generating and utilizing genetic variability through chemical mutagenesis (correct)
- The use of electromagnetic radiation to induce mutations in plants
- The determination of shape, size, weight, and density of seeds
- The selection for plant height, adaptation to soil, growing period, disease resistance, and color changes
Which of the following is not a type of chemical mutagen?
Which of the following is not a type of chemical mutagen?
What is the advantage of using chemical mutagens over physical mutagens?
What is the advantage of using chemical mutagens over physical mutagens?
Which of the following is a type of physical mutagen?
Which of the following is a type of physical mutagen?
What is the most commonly used mutagenic agent in plant mutation breeding?
What is the most commonly used mutagenic agent in plant mutation breeding?
How long are seeds or other plant propagules typically treated with physical mutagens?
How long are seeds or other plant propagules typically treated with physical mutagens?
Which of the following challenges can chemical mutagens overcome?
Which of the following challenges can chemical mutagens overcome?
What is the advantage of using physical mutagens over chemical mutagens?
What is the advantage of using physical mutagens over chemical mutagens?
Study Notes
- There are three main types of screening/selection techniques in mutation breeding.
- Physical/mechanical techniques determine shape, size, weight, density of seeds.
- Visual/phenotypic techniques are the most effective and involve selection for plant height, adaptation to soil, growing period, disease resistance, and color changes.
- Chemical mutation breeding involves the development of new varieties by generating and utilizing genetic variability through chemical mutagenesis.
- Chemical mutagens can be applied without complicated equipment and have a higher ratio of desirable mutants to undesirable mutants.
- Base analogues, intercalating agents, and alkylating agents are types of chemical mutagens.
- Chemical mutagens can overcome challenges such as high rates of chromosome aberrations and constraints of time and growing space.
- Physical mutagens involve the use of electromagnetic radiation such as gamma rays, X-rays, UV light, fast and thermal neutrons, beta and alpha particles.
- Gamma rays have become the most commonly used mutagenic agent in plant mutation breeding.
- Seeds or other plant propagules are typically treated with physical mutagens for seconds or minutes.
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Description
Take this quiz to test your knowledge on the different screening and selection techniques used in mutation breeding. Learn about the benefits and challenges of chemical and physical mutagens, and how they can be used to develop new plant varieties. Get familiar with the various types of chemical mutagens and electromagnetic radiation, and discover which ones are most commonly used in plant mutation breeding. Test yourself and see how much you know about this fascinating field of science!
