Last January my friend recieved some M. pajang seeds. In the green house the seeds germinated very fast and very well, but after a few month they started to decline, showing sings of stress. Something was wrong with the soils/roots. In an attemp of saving this mangifera, my friend decided to graft some material on M. casturi rootstock. This is the result of his experiment:
Let's hope for a good long term compabitibility...