>>537729>Which staple crop has short growing periods and high yields?Painted Mountain Corn
It is designed for cold and hot areas, short growing seasons, and fast curing. The ears are longer and thinner to allow better drying. It grows with a few tillers on each stalk which helps increase viable yield and durability. It is really hardy stuff and its development is ongoing. It is an heirloom too. It is great for cornmeal, nixtamal, masa, etc.
http://www.northfrontierfoods.com/Dave_Christensen.php>Which country has suitable all year growing?Nearly any if you have a good greenhouse. Even polytunnels can help a great deal.