Thera I am happy & proud to see another backyard breeder come out of the closet; sorry I thought I was the only Sith backyard breeder in or out of the outhouse! If my red Boca chewy produce fruit this year, you will get to try it. I am working on back crossing it to the Green Diamond line too to get out of season crop. All my selection are for self fruit tree, I can work on the taste improvement later. I am almost there with a great tasting A.montana thank to all the silent members who have sold me their seeds or donate for a future fruit in my too large of a backyard program. Perhaps we can combine our resources like the Seti program, every one backyard is a trial plot. I know I can count on the Vietnamese for helping me trial run the Boca Giant Chewy for both Central Florida & South Florida for the past 15 years. Its good to get more American to breed & show the Old World that we can improve our new world fruit too!
A church in Miami is giving me 20 Acres to plant my rare stuff, so it will be great field trial place. How far away are your red chewy development. I think it will take me about ten years to stabilize mine & who no what mutation selection we will get. 
I've started about a year ago and it took me about 3 months of gathering infos and putting everything down in writing before I actually started to collect breeders. For now, I'm concentrating on obtaining a chewy red that is pure A. Squamosa. But the Taiwanese varieties keep getting me sidetracked every now and then. Being in CA, I also have to find ways to provide enough cold hardiness to my young breeders (and future F1). I'm trying out a few experiments and won't know the results before 1 year from now. For the moment, I'm putting aside the solution of grafting onto cold hardiness species such as Cherimoya because I don't want to have to deal with direct influence between rootstock and scion.
The Taiwanese Big Eye seems to be a pure squamosa but I need to find out more about it. If it is, I will have to update my plan to include it. But this will be my last sidetrack. 
Can I tell you a very dirty little secret you promise you keep quiet? The Orange chewy is quite cold resistant, I bred it in Ocala, florida and self fruiting. It was grown in New Orlean, Tallahasee, Tampa, Gainsville in field with the Vietnamese backyard growers who worship the the chewy like The Taiwanese with their soft flesh creamy sugar apple. If you like a starchy sugar apple that is not diabetic sweet but chewy starch this is fantastic.
Plant them outside let them freeze, they can handle it like cherimoya just make sure it ain't snowing, I dont live in Minnesota anymore or I would stupidly field trials. They like moist soil but not wet and produce a crop in the fall in Orlando area. In West palm beach I get a fall crop & a winter crop if irrigate. It is haft develop & will save you ten years. Its the cold gene in its selection the Taitung Annona Triad desire not its kind of sickly pepto bismo looking fruit that attract you! You need high heat & humidity to bring that color out. I had what I want in its development a chewy, survive occasional freeze of the last 15 years here in Florida & new Orlean, the starchiness when unripe was a trait I thought it was cool a sugar apple potato. If I slide it green, pick out the seeds & fried it, taste like lotus root chip, just make sure you peel the skin of course. If you want to develop a pure squamosa F4 like Boca Chewy with all its glamorous eating quality but Red, I will help you.
I have my first Annona Squamosa Red self pollinating triple XXX cross, I will call it Mayan Sacrifice if it come out bloody red like my old war wounds; its parents are Burmese Blood from Northern Burma x (Thai Red from Chang Mai x Indian Red sital). I have five seedling flowerin. One in an air pot, one in ground, one growing on coral rock all flowering after 3 years. Very fruitful kill 100 seedling to get these fabulous five. Here are fotos of it fruiting right now on the largest tree of seven feet, bred for small back yard like mine!
the biggest seven feet busy in ground 14 fruits & counting!
the Mayan Sacrifice have survived the freeze of last three years & I consider this my coldest red which will field trial next year 2015. Considered that its parent have survived 15 years cold here in Boca Raton. Will field trial 2015 seedling in Orlando & Tampa 1,000 seedlings, from that the best two will be cross to itself & field trial to tallahasee & New Orlean. So in ten years we should have a decent all red cold as cherimoya & will cross back to the best candidate in the stable or what is in vogue in Burma & Vietnam were I beleive some of the next cool annona squamosa & atemoya will come from. But lets us produce or improve upon a squamosa & its Atemoya derivatives for the Southern Cal & All of Florida if we can. Wehave the mean, we have the passion, we have the tenacity let improve on it so all can enjoy. I am so amaze the folks improving& developing so many variety of Mango so fast, lets give our humble sugar apple a fighting chance. Become a backyard breeder of sugar apple!
My red chewy is a backcross as I have outline & will fruit probably this year, it third year & self fruitful.
The big eyes, green diamond are not pure but backross. I will give you the first new crop in september for orange chewy & you can have the unstable first generation triple cross for your breeding selection. Plant them outside & see what survive for your area, when it fruit in three to four years for you, you will have that stock. But do not pollute the annona world by giving it out. It is not stable & the line will be only with you & me. You will succeed! But please only select self fruitful seedlings & kill the rest!! Have all the previous orange chewy shipment small lot seed get a 100 percent germination?
