Which is Dwarfing Root Stock among the following? (RJ ARO Horti 2022)

✅Explanation:
M-9 is a widely recognized dwarfing rootstock for apples. It significantly reduces the size of the grafted tree, promoting early bearing and facilitating orchard management practices like pruning and harvesting. Dwarfing rootstocks are popular in modern horticulture as they allow for high-density planting, leading to increased yields per unit area.

📌Other Options Explanations:
-Option B: M – 12: While M-12 is also a rootstock for apples, it is considered semi-dwarfing.
-Option C: M – 16: M-16 is another semi-dwarfing apple rootstock.
-Option D: M – 27: M-27 is a very dwarfing apple rootstock, even more so than M-9.