Vertical resistance is useful in crop improvement programme for importing resistance:
A. Because of their monogenic nature
B. Because of their polygenic nature
C. The pathogen can break their resistance by evolving new race
D. The pathogen cannot break this resistance
E. Vertical resistance will work against biotrophic pathogens
Choose the correct answer from the options given below:
A. Because of their monogenic nature
B. Because of their polygenic nature
C. The pathogen can break their resistance by evolving new race
D. The pathogen cannot break this resistance
E. Vertical resistance will work against biotrophic pathogens
Choose the correct answer from the options given below:
Show Hint
- Monogenic (qualitative).
- Race-specific.
- Can be broken by pathogen.
- Effective against biotrophic pathogens.
- A, B, C Only
- B, C, D Only
- A, C, E Only
- C, D, E Only
The Correct Option is C
Solution and Explanation
This question tests knowledge of vertical resistance in plant breeding.
Step 2: Detailed Explanation:
Vertical resistance is characterized by:
- A. Monogenic nature: Controlled by single genes (major genes).
- B. Polygenic nature: Incorrect (that is horizontal resistance).
- C. Pathogen can break resistance by evolving new race: Correct (race-specific).
- D. Pathogen cannot break this resistance: Incorrect (can be broken).
- E. Works against biotrophic pathogens: Correct (qualitative resistance).
Thus, A, C, and E are correct.
Step 3: Final Answer:
Thus, the correct answer is A, C, E Only, which corresponds to option (C).
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