The Q&A Archives: Seedless Watermelon

Question: Where do you get seeds to plant from if the watermelon is seedless?

Answer: Seedless watermelons are the result of a plant breeding technique that's over 50 years old. Seedless watermelons do contain some undeveloped seeds, but these are soft and edible. There are three kinds of watermelons; diploid, tetraploid and triploid. The first two types have seeds, the triploid does not. To make a triplod, breeders cross a tetraploid and a diploid. The result is a triploid. The seeds of a triploid will grow and develop fruit, but the seeds within that developing fruit are sterile and will not fully develop. In order to get seeds to grow a seedless watermelon, growers save seeds from the fruit that develops when a male diploid and a female tetraploid are crossed.

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