Question

Arrange the following critical growth stages of wheat in the order :
A. Crown root initiation stage
B. Dough stage
C. Milk stage
D. Flowering stage
E. Boot stage
Choose the correct answer from the options given below :

• A. A, B, C, D, E
• B. A, E, D, C, B
• C. A, B, E, D, C
• D. A, E, D, B, C

Hint:

Wheat Irrigate Stages Timeline: 1. CRI (21 DAS) 2. Tillering (40--45 DAS) 3. Jointing (60 DAS) 4. Flowering (80--85 DAS) 5. Milking (100 DAS) 6. Dough (115 DAS)

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question requires arranging the phenological critical growth stages of wheat (Triticum aestivum) in chronological sequential order from germition to maturity.

Step 2: Sequential Phenological Stages of Wheat:

• Crown Root Initiation (CRI) Stage [A]: Occurs around 21 days after sowing (DAS). Most critical irrigation stage.
• Tillering Stage: 20--45 DAS.
• Jointing Stage: 45--60 DAS.
• Boot Stage [E]: 60--70 DAS (swelling of flag leaf sheath containing emerging spike).
• Flowering Anthesis Stage [D]: 70--85 DAS.
• Milking Stage [C]: 90--100 DAS (kernel content is liquid/milky).
• Dough Stage [B]: 105--115 DAS (kernel converts from soft to hard dough).

Step 3: Detailed Explation:

• Matching the chronological sequence of given stages:
• First: Crown Root Initiation (A)
• Second: Boot stage (E)
• Third: Flowering stage (D)
• Fourth: Milk stage (C)
• Fifth: Dough stage (B)
• Therefore, the correct chronological sequence is A, E, D, C, B.

Step 4: Fil Answer:
The correct order is A, E, D, C, B, corresponding to option (B).