Question

Given below are two statements:
Statement (I): Rootstock 110 R restricted uptake of sodium and chloride.
Statement (II): While Dog ridge and Salt creek were know to restrict the uptake of chloride only.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both Statement (I) and Statement (II) are true.
• B. Both Statement (I) and Statement (II) are false.
• C. Statement (I) is true but Statement (II) is false.
• D. Statement (I) is false but Statement (II) is true.

Hint:

Grapevine rootstocks vary in salt tolerance:
110 R: Known to restrict uptake of both sodium and chloride.
Dog Ridge & Salt Creek (Ramsey): Particularly effective at excluding chloride ions, a major component of their salt tolerance. They also manage sodium. Understanding how different rootstocks handle specific ions like Na\(^+\) and Cl\(^-\) is key to managing salinity.

Answer 1

The Correct Option is A

Step 1: Rootstock 110 R is rated for restricting uptake of both Na⁺ and Cl^-, so Statement (I) is correct.
Step 2: Dog Ridge and Salt Creek are rated mainly for chloride exclusion, not sodium, so Statement (II) is correct.
Step 3: Both statements match known rootstock salinity ratings.
Step 4: Correct answer: Both Statement (I) and Statement (II) are true.