Hello, I will try to explain it as basically as I can. Gynoecious (all female flowers) trait is controlled genetically. "Seedlessness" is controlled genetically too. It is called parthenogenisis and is basically initiation of fruiting without pollen. If you take a parth cucumber and add pollen you will get viable seeds. There are different levels of parth and GY. There are genes that have stronger levels of each and both traits come from asian cucumbers. Thanks Jonny Here is a link that might be useful: parth link

I'm not an expert. Some edible bananas are more receptive than others for pollination. Some have viable pollen that can be used, others don't. Some that have viable pollen don't have viable female part, and vice versa. It's a mixed bag. Especially since some species aren't compatible with others. Example; M.basjoo seems best suited to M.initerans hybridization, but less so with other species. If you wanted to try to pollinate one type that you have you'd have to have two stems blooming at the same time, but one would have to be producing pollen(later male flower stage), and the other would have to be in the female stage. But that wouldn't nessecarily mean that it would work, or if it did you might only get a couple of seeds. I have also heard that alot of the success depends on the time of day you pollinate, early morning being the best. I'm not sure exactly how the banana researchers do it, but I'm pretty sure that the more chromozome count you have the better chances your banana will end up being seedless.

A quick fact to better understand the nature of fig breeding. Of the 30,000 trial seedlings at UCD Davis (through the mid-70's) only 5 new varieties were released. That is with the resources of geneticists and premium caprifigs. Not to say itâÂÂs impossible, but you need to be very very lucky or have lots of patience and resources. You are far more likely to bring a "new" variety to the fig world by searching for unknowns in ethnic neighborhoods. Your other possibility is getting a "sport". Every so often a branch will mutate and have different characteristics from the mother tree. From this you can propagate cuttings of the new variety. Panache is widely believed to be a sport rather than a bred variety.

Tomato Sweet Seedless Hybrid NEW The worldÂs first seedless tomato! Burpee Exclusive. WeÂve come to appreciate seedless watermelons and virtually seedless cucumbers  now the worldÂs first seedless tomato! Beyond the lack of seeds to digest, this tomato is first rate for taste. In fact, precisely because there are no seeds to store the sugars for later use, all the sweetness is immediately available for you to enjoy in every rich slice. This is a totally new tomato on every level  the perfect balance of flavor and sweetness, meat and gel, solid firmness and juiciness. And to top it off, the indeterminate plants have a full package of disease resistance to ensure plenty of healthy yields. 68 Days. ***** The World's First seedless tomato? I think not, far from it. No seeds to store sugars for later use? The seed endosperm does have carbohydrate in it that's used for energy once the seed has germinated. That seed energy is used to grow the wee seedling until the first true leaves appear at which time photosynthesis takes over to make the energy compounds that allow for plant growth, fruit maturation, etc. I think what I'm trying to say is that I'm a bit, shall we say, underwhelmed with the hype given in the blurb. Growing one of the many known parthenocarpic varieties developed by Dr. Baggett will give you the same thing as I see it. Except his are OP, not hybrid. Varieties such as Oregon Spring, Siletz, Santiam, etc. And nowhere do they speak to the often mushiness of almost all parthenocarpic varieties, but the tradeoff is fruit set at low temps in the absence of pollenization, as explained in an above post. And that's why Dr. Baggett developed these varieties, for good fruit set in the PNW where spring temps often are too low for good pollenization. Carolyn Carolyn Here is a link that might be useful: Parthenocarpic Tomatoes ( Google Search)