Inbreeding depression will be severe in which of the following species?
Show Hint
- Onion
- Sunflower
- Carrot
- Maize
The Correct Option is D
Solution and Explanation
Inbreeding depression (loss of vigor and reproductive fitness upon continuous selfing) is most severe in outbreeding cross-pollinated crops harboring high genetic load.
Step 2: Detailed Explanation:
Maize (Zea mays) is an obligately cross-pollinated monoecious crop with high genetic load.
Continuous self-fertilization exposes lethal and sublethal recessive alleles, resulting in severe inbreeding depression characterized by marked reduction in plant height, ear size, grain yield, and emergence of lethal chlorophyll-deficient mutants.
While onion, carrot, and sunflower also exhibit depression, maize shows the most pronounced inbreeding depression among field crops.
Step 3: Final Answer:
Thus, inbreeding depression is severe in Maize.
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Male sterile cytoplasm in crop plants usually arises from-
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Choose the correct answer from the options given below:
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