Question

Match List I with List II 

Choose the correct answer from the options given below: 
 

• A. A-III, B-IV, C-II, D-I
• B. A-III, B-I, C-IV, D-II
• C. A-III, B-IV, C-I, D-II
• D. A-I, B-IV, C-III, D-II

Hint:

Single cross = $2$ inbreds; Three-way = $3$ inbreds; Double cross = $4$ inbreds ($2$ single crosses).
Whenever you see "Open pollinated variety" as a parent, it is usually a "Top cross" variant.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
The question deals with the nomenclature of different types of hybrids based on the nature and number of their parental components.

Step 2: Detailed Explanation:

• Three way cross hybrid (A-III): This is produced by crossing a single cross ($F_1$) with a third unrelated inbred line. The formula is (Inbred A x Inbred B) x Inbred C.

• Modified single cross hybrid (B-IV): This is a variation of a single cross where one parent is replaced by a cross between two closely related sister inbred lines ($A$ and $A'$) to improve seed yield of the female parent. The formula is (Inbred A x A') x Inbred B.

• Double top cross hybrid (C-I): This is a cross between a single cross and an open-pollinated variety. The formula is (Inbred A x Inbred B) x Open pollinated variety.

• Top cross hybrid (D-II): Also known as an inbred-variety cross, it involves crossing an inbred line with an open-pollinated variety. The formula is Inbred A x Open pollinated variety.
Final Answer:
Matching the parental combinations results in A-III, B-IV, C-I, and D-II.
This is found in option (C).