Too much water can cause them to go chlorotic.
Essentially, if roots become too wet to exchange nitrogen, they will go chlorotic.
When the roots are not drowning, that will alter.
(Unless you live where I do -- where rugosas are permanently chlorotic.)

You might want to wait a few days to plant them, to be sure drainage in the planting site has normalized.

Jeri

Rugosas don't like pots and they do tend to go chlorotic quickly. I'd get them in the ground asap. They will recover soon.

We had a lot of rain this spring and all my potted roses look a bit chlorotic. Also my husband had been watering them every day without me noticing :) He remembered that they dried out last year, but wasn't factoring in all the rain we've had or that it's not the hot summertime yet. Either just let them dry out a bit or plant them in the ground. 2 of mine are in permanent pots so I just moved them away from the porch so hubby is not tempted to drown them anymore.

For certain, the rugosa is showing iron deficiency. As others have said, it can be caused by waterlogging. However, from the porous look of the potting soil, I doubt the pot is subject to waterlogging. The other cause of iron deficiency is high pH. Rugosas want acid soil, preferably 5.5-6.5.

You could treat the pot (soil NOT foliage) with an iron product. If your garden soil is neutral or alkaline, before planting, adjust the pH according to a soil test using garden sulfur or micronized sulfur. This is more effective than iron supplements, but it takes a year to work.