I disagree Clint .. consider this, roots grown in water have absolutely no resistance as they elongate which can make for weaker and thinner cell walls as compared to roots grown in soil which literally have to push their way through it which causes thicker cell walls. I've actually compared the two under a microscope.
That tends to happen with some seedlings that are started indoors in my experience. The cells in the stem are not flexed like they normally would be outside with wind, breezes and rain so the cell walls of the stems that encounter no resistance or flexing tend to be thinner and more fragile. That's why I always 'pet' my seedlings when I start them indoors or use an oscillating fan. I find my seedling are stronger and more robust when I plant them out.
