First, "largest" does not necessarily equal "healthiest". Nothing but a very marginal correlation has ever been established.

Same holds true for size of the seed. Vigor of the seedling is equally dependent on the DNA of the seed and the growing conditions provided. Smaller seeds can have superior DNA definition over larger seeds just as easily as the reverse. It is the conditions provided that will make all the difference.

Dave

Given the choice of seeds, I would choose the larger more uniform in shape to plant. The stored energy in the seed provide the cotyledons or seed leaves as well as the radicle or root. Once germinated and initial root and seed leaves produced, and able to feed the seedling, then the DNA or basic vigor of the species is paramount, in my opinion. Al