Milad,
you can find some information in the paper "Kernel Color of Three Black Walnut Cultivars after Delayed Hulling at Five Successive Harvest Dates" available at http://hortsci.ashspublications.org/c...
Delayed hulling of fruits resulted in lower kernel color values.
Alex
Posted
by: alex ignatov
(1 point)
Posted: January 26, 2017
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