Fresh From Consumer Polls, Pint-Size Watermelons By DAVID BARBOZA YUMA, Ariz. Here, in the heart of the desert, is a watermelon patch like no other. After years of crossing different breeds of watermelons, scientists who long ago eliminated the dark seeds have now sweetened the flavor, trimmed the rind and miniaturized bulky Citrullus lanatus into something that looks like a little green cantaloupe. Only its speckled shell gives a clue to the fruit's lineage. "Look at this baby," says Chris Grallert, a product manager at Syngenta Seeds, grabbing hold of the company's masterwork. "It's got the small size; it's perfectly round. Let's see what's inside." Mr. Grallert hacks on a vine in the patch, lifts a melon, cups it in one hand, splits it open, dices it into tiny squares, and then bites into a fleshy, red chunk. "Now that's a watermelon," he said with a grin. Seedless, five pounds, and perfectly spherical, Syngenta's patented minimelon under the brand name PureHeart went on sale this month and is already available in almost 30 states. Its introduction is one of the latest efforts by food scientists to satisfy consumers who increasingly favor ready-to-go meals and less troublesome food preparation. More here.