Question:
Arrange the following steps of pure line selection method of flower crop improvement in correct sequence?
(A). Selection of plants on the basis of their phenotype.
(B). Conducting preliminary yield trials and rejecting inferior progenies.
(C). Best progeny selection and its seed multiplication.
(D). Growing individual plant progenies and rejection of undesirable progenies.
(E). Conducting replicated yield trials in several locations and rejecting inferior progenies.
Arrange the following steps of pure line selection method of flower crop improvement in correct sequence?
(A). Selection of plants on the basis of their phenotype.
(B). Conducting preliminary yield trials and rejecting inferior progenies.
(C). Best progeny selection and its seed multiplication.
(D). Growing individual plant progenies and rejection of undesirable progenies.
(E). Conducting replicated yield trials in several locations and rejecting inferior progenies.
(A). Selection of plants on the basis of their phenotype.
(B). Conducting preliminary yield trials and rejecting inferior progenies.
(C). Best progeny selection and its seed multiplication.
(D). Growing individual plant progenies and rejection of undesirable progenies.
(E). Conducting replicated yield trials in several locations and rejecting inferior progenies.
Show Hint
To remember the sequence of pure line selection:
Individual selection (Phenotype) $\rightarrow$ Progeny row test $\rightarrow$ Preliminary yield trial $\rightarrow$ Multi-location trials $\rightarrow$ Release and multiplication.
Individual selection (Phenotype) $\rightarrow$ Progeny row test $\rightarrow$ Preliminary yield trial $\rightarrow$ Multi-location trials $\rightarrow$ Release and multiplication.
Updated On: Jul 29, 2026
- (C), (D), (E), (B), (A)
- (A), (D), (B), (C), (E)
- (A), (D), (B), (E), (C)
- (C), (B), (E), (A), (D)
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Pure line selection is a widely used breeding method in self-pollinated crops (including many annual flower crops) to isolate superior, homozygous genotypes from a heterogeneous mixed population.
A pure line consists of the progeny of a single, self-fertilized, homozygous individual.
The breeding procedure is structured over several generations to select superior phenotypes, evaluate their progeny, test their yield performance, and multiply the seeds of the best line.
Step 2: Detailed Explanation:
Let us arrange the steps of pure line selection in their correct chronological sequence:
Step 1: Selection of plants on the basis of their phenotype (A):
In the first year, individual plants are selected from a large, heterogeneous, self-pollinated mixed population based on their superior phenotypic characteristics (such as plant height, flower color, or disease resistance).
The seeds from each selected plant are harvested separately.
Growing individual plant progenies and rejection of undesirable progenies (D):
In the second year, the seeds of each selected plant are grown as individual row progenies.
progenies that show poor performance, segregation, or undesirable traits are rejected, and only the superior, uniform progenies are retained.
Step 2: Conducting preliminary yield trials and rejecting inferior progenies (B):
In the third year, the selected uniform progenies are grown in a preliminary yield trial along with a standard check variety to evaluate their yield performance.
Lines that perform poorly compared to the check are rejected.
Step 3: Conducting replicated yield trials in several locations and rejecting inferior progenies (E):
In the fourth to sixth years, the superior lines are tested in replicated yield trials at multiple locations across different agro-climatic zones to evaluate their yield stability and adaptability.
Step 5: Best progeny selection and its seed multiplication (C):
In the seventh year, the best-performing line is identified, named, released as a new cultivar, and its seeds are multiplied for commercial distribution to growers.
This sequence corresponds to (A), (D), (B), (E), (C), which matches option (C).
Step 3: Final Answer:
Therefore, the correct chronological sequence of steps is (C).
Pure line selection is a widely used breeding method in self-pollinated crops (including many annual flower crops) to isolate superior, homozygous genotypes from a heterogeneous mixed population.
A pure line consists of the progeny of a single, self-fertilized, homozygous individual.
The breeding procedure is structured over several generations to select superior phenotypes, evaluate their progeny, test their yield performance, and multiply the seeds of the best line.
Step 2: Detailed Explanation:
Let us arrange the steps of pure line selection in their correct chronological sequence:
Step 1: Selection of plants on the basis of their phenotype (A):
In the first year, individual plants are selected from a large, heterogeneous, self-pollinated mixed population based on their superior phenotypic characteristics (such as plant height, flower color, or disease resistance).
The seeds from each selected plant are harvested separately.
Growing individual plant progenies and rejection of undesirable progenies (D):
In the second year, the seeds of each selected plant are grown as individual row progenies.
progenies that show poor performance, segregation, or undesirable traits are rejected, and only the superior, uniform progenies are retained.
Step 2: Conducting preliminary yield trials and rejecting inferior progenies (B):
In the third year, the selected uniform progenies are grown in a preliminary yield trial along with a standard check variety to evaluate their yield performance.
Lines that perform poorly compared to the check are rejected.
Step 3: Conducting replicated yield trials in several locations and rejecting inferior progenies (E):
In the fourth to sixth years, the superior lines are tested in replicated yield trials at multiple locations across different agro-climatic zones to evaluate their yield stability and adaptability.
Step 5: Best progeny selection and its seed multiplication (C):
In the seventh year, the best-performing line is identified, named, released as a new cultivar, and its seeds are multiplied for commercial distribution to growers.
This sequence corresponds to (A), (D), (B), (E), (C), which matches option (C).
Step 3: Final Answer:
Therefore, the correct chronological sequence of steps is (C).
Was this answer helpful?
0
0
Top ICAR AIEEA Horticulture Questions
- In banana:
Statement (A): Bunch feeding is a simple and low-cost method.
Statement (B): It is the direct way to supply nutrients to the bunch.
Statement (C): Only micronutrients can be given through this method.
Choose the correct answer from the options given below. - The softwood grafting
Statement (I): Is done with mature, procured scion on the emerging soft, coppery-red shoot of the rootstock, which is 60-70 days old.
Statement (II): Is used for raising desired varieties of mango, sapota, tamarind and cashew.
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): In garlic modified roots are economic part.
Statement (II): Characteristic odour in garlic is due to volatile organic sulfur-containing compounds that are rapidly produced upon tissue damage and diffuse into the air.
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): The flowers of ridge gourd start opening in the evening and remain open throughout the night.
Statement (II): Pollination of ridge gourd is done in the day time.
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): The first gynoecious based hybrid of bitter gourd is Pusa Hybrid-4 developed by ICAR-IARI, New Delhi.
Statement (II): The male:female ratio of the gynoecious based hybrids of bitter gourd is 25:1.
In light of the above statements, choose the most appropriate answer from the options given below.
View More Questions
Top ICAR AIEEA Genetics & Plant Breeding Questions
- Which one of the following is not a Spanish bunch variety of ground nut?
- Which is world first semi dwarf, photoperiod insensitive and high yielding rice variety?
- Given below are two statements:
Statement (I): Bringing together two or more genes governing a single trait, especially resistance to disease is known as gene pyramiding
Statement II: The use of molecular markers greatly facilitates gene pyramiding as it minimises the need for disease tests and progeny test
In light of the above statements, choose the most appropriate answer from the options given below: - Polyploidy level of cultivated strawberry
- Mango hybrid Arka Suprabhath is a croos between
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions