Question

Given below are two statements:
Statement (I): Heat tolerant tropical cauliflowers show significantly high level of self-incompatibility.
Statement (II):The European annual or snowball types are basically self-compatible in nature.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both Statement (I) and Statement (II) are true.
• B. Both Statement (I) and Statement (II) are false.
• C. Statement (I) is true but Statement (II) is false.
• D. Statement (I) is false but Statement (II) is true.

Hint:

Self-incompatibility (SI) in cauliflower:
Tropical/Indian Cauliflowers: Often highly self-incompatible (promotes outcrossing).
European Annual/Snowball Types: Generally selected to be self-compatible (allows self-pollination for seed set). This difference in breeding systems is important for cauliflower seed production.

Answer 1

The Correct Option is A

Step 1: Tropical cauliflowers rely on strong self-incompatibility, which is exactly why they are outcrossing and useful for hybrid seed production.
Step 2: European snowball types are maintained as pure lines, only possible because they are self-compatible.
Step 3: Each breeding method only works if its group's stated compatibility trait is true.
Step 4: Both statements are true, so the answer is option (1).