More warts, please: How gourds got their gross growths


Move over, Cinderella: Your orange, carriage-shaped pumpkin has some competition for fall decorating.

Porches are now sporting new colored pumpkins in shades of beige, green, red, white, gray, mustard, brown, even “blue pink” (yes, there is such a color). From palm-sized to several-hundred-pound prize-winning giants, consumers have scores more pumpkin choices than there were just a short decade ago.

The latest trend is the unexpected imperfection of conspicuous warts, raised blemishes that add ornamental character to the iconic orange pumpkin.

Ask any kid: The wartier and weirder the pumpkin, the better for the Halloween season. Naturally, wart popularity is growing. Because people want more warts, plant companies and university researchers are breeding for more warts. This all translates to selling more warty pumpkins. (Ah-ha! The mighty wart dollar!)

Creating all these pumpkin bumps, different sizes and colors has to do with plant flowers engaging in cross-pollination, which can happen unintentionally in the home garden or on purpose by plant breeders who specialize in bringing these various colored, bumpy and knuckle-like covered gourds and pumpkins to your favorite garden center, grocery store and farmers market.

How does cross-pollination and cross-breeding intentionally happen? It all has to do with pollination and the scientific group where the plants belong.

Cucurbits (for short), the botanical group that includes pumpkins, are “monoecious” in their flowering habit, which is fairly unique among vegetable crops. This means separate male and female flowers are produced on the same plant. For fruit to form from the female flower, pollen from the male flower must be transferred to the female flower. This pollination is done with the much appreciated and vital help of bees.

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Certain bees have plant flower preferences, too. As you would guess, squash bees prefer to pollinate squash flowers and leave watermelon flowers to the other heroes: honeybees, bumblebees and solitary bees.

Scientific names of plants have two parts: the species and the genera (plural of genus). Plants in the Cucurbitaceae (gourd) family contain many species and genus of squash, pumpkins, melons and cucumbers. Example: The cantaloupe’s scientific name is Cucumis melo, with “Cucumis” as the genus and “melo” as the species. Cucumber is Cucumis sativus, so even though both cantaloupe and cucumbers are in the same Cucumis genus, they are not the same species, so do not cross-pollinate.

Think of each different species within the cucurbit family like horses and cows: They simply cannot create offspring together. So your cucumber plant will not cross pollinate

Source:: The Denver Post – Lifestyle


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