Question:
Make the correct sequence of steps involved in the pureline selection method of flower crop improvement?
A. Conducting preliminary yield trials of progenies.
B. Selection of individual plants from a local variety or some other genetically variable and homozygous population.
C. Conducting replicated yield trials at several locations.
D. Planting of progenies from individual plants separately with proper spacing.
E. Release of best progeny as variety and seed multiplication for distribution.
Choose the correct answer from the options given below:
Make the correct sequence of steps involved in the pureline selection method of flower crop improvement?
A. Conducting preliminary yield trials of progenies.
B. Selection of individual plants from a local variety or some other genetically variable and homozygous population.
C. Conducting replicated yield trials at several locations.
D. Planting of progenies from individual plants separately with proper spacing.
E. Release of best progeny as variety and seed multiplication for distribution.
Choose the correct answer from the options given below:
A. Conducting preliminary yield trials of progenies.
B. Selection of individual plants from a local variety or some other genetically variable and homozygous population.
C. Conducting replicated yield trials at several locations.
D. Planting of progenies from individual plants separately with proper spacing.
E. Release of best progeny as variety and seed multiplication for distribution.
Choose the correct answer from the options given below:
Show Hint
Pureline selection results in a variety that is genetically "Uniform" and "Homozygous". Remember the acronym: SPMR (Selection, Progeny, Multi-location, Release).
Updated On: Aug 13, 2026
- A, B, D, E, C
- A, D, B, C, E
- B, D, A, C, E
- D, E, A, C, B
Show Solution
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Pureline selection is a method of improving self-pollinated crops by selecting the best individual plant and growing its progeny separately. The goal is to isolate superior homozygous genotypes from a heterogeneous population.
Step 2: Detailed Explanation:
The standard procedure for pureline selection is as follows:
1. Selection (B): In the first year, a large number (200-3000) of superior individual plants are selected from a diverse base population (like a local variety).
2. Progeny Rows (D): In the second year, seeds from each selected plant are sown in separate "progeny rows". This allows the breeder to observe if the selected traits are inherited.
3. Preliminary Yield Trials (A): In the third year, the best progeny rows (the most promising lines) are selected and grown in preliminary trials to compare their yield and quality against a "check" variety.
4. Replicated Trials (C): Over the next 3-4 years, the few superior lines are tested in multi-location replicated trials to ensure they perform well across different environments.
5. Release and Multiplication (E): Once a line is proven superior, it is officially released as a new variety, and its seeds are multiplied for distribution to farmers.
The sequence is therefore B \(\rightarrow\) D \(\rightarrow\) A \(\rightarrow\) C \(\rightarrow\) E.
Step 3: Final Answer:
The correct sequence is B, D, A, C, E.
Pureline selection is a method of improving self-pollinated crops by selecting the best individual plant and growing its progeny separately. The goal is to isolate superior homozygous genotypes from a heterogeneous population.
Step 2: Detailed Explanation:
The standard procedure for pureline selection is as follows:
1. Selection (B): In the first year, a large number (200-3000) of superior individual plants are selected from a diverse base population (like a local variety).
2. Progeny Rows (D): In the second year, seeds from each selected plant are sown in separate "progeny rows". This allows the breeder to observe if the selected traits are inherited.
3. Preliminary Yield Trials (A): In the third year, the best progeny rows (the most promising lines) are selected and grown in preliminary trials to compare their yield and quality against a "check" variety.
4. Replicated Trials (C): Over the next 3-4 years, the few superior lines are tested in multi-location replicated trials to ensure they perform well across different environments.
5. Release and Multiplication (E): Once a line is proven superior, it is officially released as a new variety, and its seeds are multiplied for distribution to farmers.
The sequence is therefore B \(\rightarrow\) D \(\rightarrow\) A \(\rightarrow\) C \(\rightarrow\) E.
Step 3: Final Answer:
The correct sequence is B, D, A, C, E.
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