Chronological steps in hybrid development and seed production is given below
A. Pure line development
B. Development of hybrid
C. Evaluation of pure line
D. Hybrid release and notification
E. Seed production and distribution
Choose the correct answer from the options given below:
A. Pure line development
B. Development of hybrid
C. Evaluation of pure line
D. Hybrid release and notification
E. Seed production and distribution
Choose the correct answer from the options given below:
Show Hint
- C-A-B-D-E
- A-B-C-D-E
- A-C-B-D-E
- C-B-A-D-E
The Correct Option is C
Solution and Explanation
Hybrid crop cultivar development proceeds through systematic breeding, testing, and seed multiplication phases.
Step 2: Detailed Explanation:
The chronological breeding sequence is:
1. Development of inbred pure lines (A): Repeated selfing and selection over 6-8 generations.
2. Evaluation of pure lines (C): Top-cross/line $\times$ tester testing for general (GCA) and specific combining ability (SCA).
3. Development of experimental hybrids (B): Crossing identified superior inbred parental combinations.
4. Multi-location trial testing, release, and notification (D): Official CVRC release and gazette notification.
5. Large-scale certified hybrid seed production and distribution to farmers (E).
Step 3: Final Answer:
Therefore, the correct chronological sequence is A-C-B-D-E.
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• [(A).] Seeds of synthetic varieties need to be replaced every year.
• [(B).] Hybrid crops need intensive care and more inputs.
• [(C).] Open pollinated progeny test is used in Maize and Pearl millet.
• [(D).] Composite varieties exploit both GCA and SCA. Choose the correct answer from the options given below:
Which of the following combinations of the premises of 'Gamete Selection' in plant breeding is the correct one?
• [(A).] Multiparent crosses are required for simultaneous improvements of multiple traits.
• [(B).] The male parents of the final crosses are heterozygous and hence heterogametic.
• [(C).] Each zygotic seed is a product of a separate, independent fertilization event.
• [(D).] Gametic selection is an effective method to isolate an inbred for hybrid breeding.
Choose the correct answer from the options given below:
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