Crop Improvement / Plant Breeding
Telangana Open School (TOSS) · Class 12 · Biology
Flashcards for Crop Improvement / Plant Breeding — Telangana Open School (TOSS) Class 12 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.
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What is plant breeding?
Answer
Plant breeding is the scientific process of improving crop plants by altering their genetic makeup to develop new varieties that are superior in yield, quality, disease resistance, and adaptability. I…
Define crop improvement.
Answer
Crop improvement refers to the enhancement of crop plants through genetic modification to produce new varieties that are better than existing ones in traits like yield, quality, and resistance to pest…
What are the main objectives of plant breeding?
Answer
The main objectives of plant breeding are: (1) to develop varieties with high yield and good quality, (2) to introduce disease and pest resistance, (3) to improve drought and stress tolerance, (4) to …
What is introduction in plant breeding?
Answer
Introduction is the method of bringing high-yielding crop varieties from their natural habitat into new regions. The plant must adapt to the new environment through acclimatization. For example, IR-8 …
What is germplasm?
Answer
Germplasm refers to the collection of seeds, pollen, or plant parts that contain all possible alleles for all genes in a crop species. It serves as a genetic resource for plant breeding programs and h…
Explain mass selection in plant breeding.
Answer
Mass selection is a method where plants are selected based on their visible traits (phenotype) from a mixed population. Their seeds are mixed and used to grow the next generation. It is commonly used …
What is pure line selection?
Answer
Pure line selection is a method used for self-pollinated crops where a single superior plant is selected, and its progeny are grown separately over several generations. After 8–10 years of selection, …
What is clonal selection?
Answer
Clonal selection is the process of developing new varieties from a single plant through vegetative propagation. All plants in a clone are genetically identical. This method is used in crops like potat…
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