What the rate of photosynthesis would be in a newly developed leaf?

In a newly formed leaf, the rate of photosynthesis is low. In a new leaf, the number of chloroplast i.e amount of chlorophyll is low. Again, photosynthesis depends on the amount of chlorophyll. In a newly formed leaf, deficient amount of chlorophyll or the amount of chlorophyll being less leads to low rate of photosynthesis in that leaf.