This two-part ruling is simply one man’s determination of the issue and is not binding on others — unless they wish it to be, of course.
1) Foods made with genetically-modified organisms (GMOs) are not kosher.
2) Natural hybrids are generally fine, provided that both gametes were kosher.
A similar but more lengthy opinion can be found here…
Are GMOs Kosher? http://www.jewsnews.co.il/2013/07/02/are-gmos-kosher/