Question:
Given below are two statements related to graft incompatibility in forest trees, which could be due to:
Statement (I): No matching between scion and root stock.
Statement (II): No proper movement of nutrients and minerals from root stock to scion.
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements related to graft incompatibility in forest trees, which could be due to:
Statement (I): No matching between scion and root stock.
Statement (II): No proper movement of nutrients and minerals from root stock to scion.
In light of the above statements, choose the most appropriate answer from the options given below.
Statement (I): No matching between scion and root stock.
Statement (II): No proper movement of nutrients and minerals from root stock to scion.
In light of the above statements, choose the most appropriate answer from the options given below.
Show Hint
Graft incompatibility can be immediate (failure to take) or delayed (failure after several years of growth), often characterized by swelling at the graft union.
Updated On: Jul 28, 2026
- Both Statement (I) and Statement (II) are correct.
- Both Statement (I) and Statement (II) are incorrect.
- Statement (I) is correct but Statement (II) is incorrect.
- Statement (I) is incorrect but Statement (II) is correct.
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Grafting is a vegetative propagation technique where a scion (desirable shoot) is joined with a rootstock (established root system).
Graft incompatibility occurs when the graft union fails to form a successful, long-term functiol connection.
Step 2: Detailed Explation:
Let us examine the causes of graft incompatibility:
- Statement (I): Atomical or physiological mismatch between the scion and the rootstock leads to poor cambial alignment.
If the cambial layers do not align or if there is taxonomic divergence, the cells cannot differentiate into functiol vascular tissues.
Thus, no proper matching between scion and rootstock is a primary cause.
So, Statement (I) is correct.
- Statement (II): When vascular tissues (xylem and phloem) fail to connect properly across the graft interface, water and mineral transport from the rootstock to the scion is severely restricted.
This vascular block starves both the scion and the rootstock, leading to graft failure or leaf yellowing and death.
So, Statement (II) is correct.
Since both statements accurately describe the atomical causes and physical consequences of graft incompatibility, both statements are correct.
Step 3: Fil Answer:
Both Statement (I) and Statement (II) are correct.
Hence, the correct option is (A).
Grafting is a vegetative propagation technique where a scion (desirable shoot) is joined with a rootstock (established root system).
Graft incompatibility occurs when the graft union fails to form a successful, long-term functiol connection.
Step 2: Detailed Explation:
Let us examine the causes of graft incompatibility:
- Statement (I): Atomical or physiological mismatch between the scion and the rootstock leads to poor cambial alignment.
If the cambial layers do not align or if there is taxonomic divergence, the cells cannot differentiate into functiol vascular tissues.
Thus, no proper matching between scion and rootstock is a primary cause.
So, Statement (I) is correct.
- Statement (II): When vascular tissues (xylem and phloem) fail to connect properly across the graft interface, water and mineral transport from the rootstock to the scion is severely restricted.
This vascular block starves both the scion and the rootstock, leading to graft failure or leaf yellowing and death.
So, Statement (II) is correct.
Since both statements accurately describe the atomical causes and physical consequences of graft incompatibility, both statements are correct.
Step 3: Fil Answer:
Both Statement (I) and Statement (II) are correct.
Hence, the correct option is (A).
Was this answer helpful?
0
0
Top ICAR AIEEA Forestry Agroforestry Silviculture Questions
- Read the following statements of silvicultural system followed in tree species and choose the correct answer from the following options:
Statement (I): Anogeissus latifolia is worked only as a component species of mixed forests as coppice-with-standards.
Statement (II): Terminalia arjuna tree is not a regular component of forest stand and is usually worked under selection and coppice with standards.
Choose the correct answer from the options given below: - The most important single factor affecting natural regeneration of Shorea robusta is the time lag between the falling of seed and the commencement of the ________.
- Read the following statements and choose the correct answer about silvicultural system/s adopted for the management of Shorea robusta:
Statement (I): Under clear felling system, a rotation age is fixed and the entire area clear felled and the crop is of uniform age.
Statement (II): Selection system is adopted for areas which are badly eroded and where regeneration is problem and regeneration is obtained by natural means, which may be supplemented by planting.
Statement (III): In coppice with standards system, a few standards are retained and the other trees above the exploitable diameter are clear felled and regeneration is obtained by means of coppice.
Choose the correct answer from the options given below: - Which of the following type of soil is the best for plant growth?
- A biosphere reserve conserves and preserves the following variety of life and choose the correct option of variety of life:
(A). Wild animals
(B). Wild land
(C). Natural vegetation
Choose the correct answer from the options given below:
View More Questions
Top ICAR AIEEA Tree Improvement Questions
- Which of the following institute is recognized as DUS Centre for Willows and Poplar germplasm?
- In forest trees, provenance variation and tree to tree differences accounts for nearly _______ of all the variation observed.
- Topophysis is the position on the stock plant that impacts on the growth orientation of the propagule; however, in some plant, scion grows like branches instead of its normal growth orientation and such growth is termed as _______
- Trees which are selected and graded based on the morphological and phenotypic characteristics are called _______
Match List-I with List-II.
List-I (Terminology) List-II (Meaning) (A) Myrmecophily (I) Snails (B) Malacophilous (II) Bats (C) Ornithophily (III) Squirrels (D) Chiropterophily (IV) Ants (V) Birds Choose the correct answer from the options given below.
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