Janet we are not in India. United India from Peshawar to Rangoon was a distance of more then two thousand miles. We all including Burma went our own way and one thing is common amongst all the former parts of United India. Jealousy, privacy, has separated (cordon sanitaire) us. Not even a bird can fly over how can a poor Ziziphus? We can only agree to disagree.
It seems all the work on Ziziphus in Pakistan is being done at Arid Research Institute, Tandojam. Now let me see who I can contact down there. Enter into search "Agriculture University Tandojam" you should get a hit.
Regards,
Masud.