Subject: What is the theoretical yield in the extraction of DNA from banana

I wanted to know what the theoretical yield when DNA is extracted from a 
banana. I have tried searching on the internet and am unable to find an 
answer. I do not mind if you tell me, instead of bananas, my answer with 
reference to plants. I used 14.4 g of banana and got a yield of 0.2g of DNA. 
In short, I would like to know the yield that I should have obtained form this 
experiment and how it was obtained.

Re: What is the theoretical yield in the extraction of DNA from banana