Abstract
Although the production of seedless triploid, even tetraploid. F1 hybrid watermelons is becoming popular year by year in Japanese gardening, they are not yet used for commercial products in the United States and other neighboring countries where many a strain of watermelon are grown in large or small scales. It has been sh.own, however, as a result of several experimental tests that the present Japhnese seedless watermelons are not always so fitted for growing in America as expected by Japanese seedmen, because of the weak germinating capacity of seeds, rather smaller and earlier ripening quality as compared to the ordinary American varieties, and also too brittle ri[nd and flavorless flesh of the fruits to market.
