Hi Maryoto,
Glad you found a source for this fruit. Can you please ask them about the best variety of Jackfruit in Indonesia ?. I'm also looking for red borneo jackfruit seeds, let us know if you can find it.
Don't forget about Garcinia species, that we mentioned earlier.
I've contacted their management, but they have not reply my email.
Hopefully they allow me to get their nangkadak fruit.
Okey, I will inform you if there are a new seeds and also the seeds that you are ask.
I don't really know about the best jackfruit here.
But I think the best is:
1.Malaysia cempedak
2.Nangkadak
3.Pedakka
4.Cempeka
Varieties 2-4 are a hybrid varieties of jackfruit and Cempedak..
The advantages of this fruit is the taste more sweeter than jackfruit,from seed to the fruition only takes 3-4 years with high productivity.
Produce much fruit with a little bit of sap.
For cempeka and pedakka fruit i have a minimal information,because this fruits has not been cultivated.