Dragonfruit stigma colour.

[Rannman]

There’s a theory going around in relation to the stigma of dragonfruit flowers. Yellow stigma is self sterile(needs to be cross pollinated), green stigma self fertile (will pollinate itself).
The pics are from Purple Haze (Yellow stigma and self sterile), and Sugar Dragon (green stigma and self fertile).
Any ideas?

[Mike T]

Very interesting theory and I had better check with my ones. I got rid of poorer bearing and ones that arent self-fertile by finding out the hard way. I found out the ecuadorian big yellow is self fertile, as is colombian red, purple princess and palmerston purple as well as frankies red set well if left alone. I did plant israeli yellow and condor on a pole with a good pollinizer just for kicks. I had better inspect the stamens and see how things line up.

[spaugh]

my palora seedlings have yellow stamen and are definitely self pollinating.  Sugar dragon also very self fertile and has yellow stamen. American beauty also yellow stamen and self fertile.

Some palora seedlings have yellow and some have green and both are self fertile by the way.

[vall]

Another theory I have heard relates to length of pistil. Short ones (so the pollen is close) are self fertile, long ones are not.

[Rannman]

my palora seedlings have yellow stamen and are definitely self pollinating.  Sugar dragon also very self fertile and has yellow stamen. American beauty also yellow stamen and self fertile.

Some palora seedlings have yellow and some have green and both are self fertile by the way.

Sugar Dragon is very green.

[Rannman]

Another theory I have heard relates to length of pistil. Short ones (so the pollen is close) are self fertile, long ones are not.

Sugar Dragon has a long pistil.🤷🏻‍♂️🤷🏻‍♂️

[Rannman]

1st pic - Sugar Dragon- Green stigma - self fertile.
2nd pic - Delight - Yellow stigma - self sterile
3rd pic - Zamorano- Yellow stigma - self sterile.
Working for me so far.👍

[spaugh]

this is my palora seedling.  to me it looks yellow but maybe thats green?  the guy richard from grafting dragonfruit has palora seedling with definite green stamen.  i noticed it that his was more green when watching his video.  but both are self fertile. 

the pics of sugar dragon on the web as well as american beauty look yellw to me also but maybe hard to tell.  its winter here or I would look at it in person. 

anyway its interesting







American beauty