Question:
Establishment of “seed garden” to produce superior hybrids and cultivars is done in
Establishment of “seed garden” to produce superior hybrids and cultivars is done in
Show Hint
Isolated seed gardens are essential for producing hybrid coconut seeds (e.g., D \(\times\) T hybrids) to prevent contamination from foreign pollen.
Updated On: Jul 31, 2026
- Pineapple
- Cashewnut
- Coconut
- Plantain
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
In cross-pollinated perennial plantation crops, producing high-yielding hybrid seeds on a commercial scale requires specialized, isolated production plots.
These plots are referred to as “seed gardens” or “seed orchards.”
These seed gardens are designed to facilitate controlled natural crossing or directed pollination between designated parental lines.
This approach avoids contamination from external, genetically inferior pollen, ensuring high genetic purity and hybrid vigor (heterosis) in the progeny.
Step 2: Detailed Explanation:
The coconut palm (Cocos nucifera) is a highly cross-pollinated crop, especially the Tall (West Coast Tall, East Coast Tall) varieties, which exhibit allogamy due to protandry.
In contrast, Dwarf varieties (like Chowghat Orange Dwarf or Malayan Yellow Dwarf) are predominantly self-pollinated (autogamous).
To commercially produce superior Dwarf \(\times\) Tall (D \(\times\) T) or Tall \(\times\) Dwarf (T \(\times\) D) hybrids, breeders establish isolated Coconut Seed Gardens.
In these seed gardens, the maternal parent (usually Dwarf palms) and the paternal parent (select Tall cultivars) are planted in specific spatial patterns (e.g., alternating rows or blocks).
The male inflorescences of the maternal Dwarf palms are systematically emasculated before pollen shed.
This step ensures that the female flowers of the Dwarfs are pollinated only by the pollen from the adjacent Tall paternal palms, either naturally via wind and insects or through assisted pollination.
This systematically organized seed garden ensures a steady, high-purity supply of hybrid coconut seedlings for farmers.
For vegetative crops like Pineapple and Plantain (Banana), propagation is done using suckers or tissue culture.
This approach bypasses sexual seed production, making seed gardens unnecessary.
While cashew is grown from seeds or grafts, commercial hybrid seed orchards are not structured as seed gardens in the same manner as coconut.
Step 3: Final Answer:
Therefore, the establishment of isolated seed gardens to produce superior hybrids is a standard breeding practice for Coconut.
In cross-pollinated perennial plantation crops, producing high-yielding hybrid seeds on a commercial scale requires specialized, isolated production plots.
These plots are referred to as “seed gardens” or “seed orchards.”
These seed gardens are designed to facilitate controlled natural crossing or directed pollination between designated parental lines.
This approach avoids contamination from external, genetically inferior pollen, ensuring high genetic purity and hybrid vigor (heterosis) in the progeny.
Step 2: Detailed Explanation:
The coconut palm (Cocos nucifera) is a highly cross-pollinated crop, especially the Tall (West Coast Tall, East Coast Tall) varieties, which exhibit allogamy due to protandry.
In contrast, Dwarf varieties (like Chowghat Orange Dwarf or Malayan Yellow Dwarf) are predominantly self-pollinated (autogamous).
To commercially produce superior Dwarf \(\times\) Tall (D \(\times\) T) or Tall \(\times\) Dwarf (T \(\times\) D) hybrids, breeders establish isolated Coconut Seed Gardens.
In these seed gardens, the maternal parent (usually Dwarf palms) and the paternal parent (select Tall cultivars) are planted in specific spatial patterns (e.g., alternating rows or blocks).
The male inflorescences of the maternal Dwarf palms are systematically emasculated before pollen shed.
This step ensures that the female flowers of the Dwarfs are pollinated only by the pollen from the adjacent Tall paternal palms, either naturally via wind and insects or through assisted pollination.
This systematically organized seed garden ensures a steady, high-purity supply of hybrid coconut seedlings for farmers.
For vegetative crops like Pineapple and Plantain (Banana), propagation is done using suckers or tissue culture.
This approach bypasses sexual seed production, making seed gardens unnecessary.
While cashew is grown from seeds or grafts, commercial hybrid seed orchards are not structured as seed gardens in the same manner as coconut.
Step 3: Final Answer:
Therefore, the establishment of isolated seed gardens to produce superior hybrids is a standard breeding practice for Coconut.
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 Plant Propagation Questions
- 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. - Which method of grafting is used for reworking old fruit tree?
- Citrus rootstock which is tolerant to gummosis, root rot, tristeza and drought
- Which of the following is true for essentiality of germination?
(A). Viability of seed
(B). Proper environment
(C). Seed free from dormancy
(D). Thin seed coat
Choose the correct answer from the options given below: - In case of epicotyl grafting in mango, healing union stage extends from
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