Frank sent me some information to share. Here’s an interesting article on vegetable grafting.
http://www.washingtonpost.com/lifestyle/home/the-mad-science-behind-vegetable-grafting/2015/04/21/75764714-e47f-11e4-81ea-0649268f729e_story.html?wpisrc=nl_home&wpmm=1
Mad Science behind Vegetable Grafting
April 30, 2015 by Linda Welch
Monroe County Master Gardener Association 
Thank you Frank.