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Surprisingly, many of the fruits, nuts, and vegetables we consume daily are actually man-made hybrids. These were developed in labs using selective breeding, a method where only plants with desirable characteristics are cultivated. However, there have been a few cases where insects played a role in creating hybrid plants through cross-pollination.
Naturally, these insects couldn’t have cross-pollinated the plants if humans hadn’t introduced at least one of them into the environment. Many items on this list are unexpected because they are fruits, nuts, and vegetables we often assume are entirely natural.
10. Cabbage, Broccoli, Cauliflower, Kale, and Others
Cabbage, broccoli, cauliflower, kale, brussels sprouts, collard greens, kohlrabi, and several similar vegetables all stem from the same plant species: Brassica oleracea. This species traces back to wild mustard, which still grows in the wild today.
Around 2,500 years ago, wild mustard was found only in certain regions of Europe and the Mediterranean, with its flavor varying significantly based on its location. The ancient Romans and Greeks discovered they could cultivate it for food, engaging in selective breeding by planting seeds from wild mustard with larger leaves. This led to the creation of what we now know as kale and collard greens.
The practice of selective breeding persisted into the 1600s, when people cultivated wild mustard with larger leaf buds. This effort produced a new vegetable densely covered in leaves—the first cabbage. Wild mustard bred for larger stems became kohlrabi, those with small heads turned into brussels sprouts, and those with large flowers evolved into broccoli and cauliflower.
The hybridization of wild mustard and its variants continued into the 20th century. In 1928, Russian biologist Georgii Dmintrievich Karpechenko combined a radish with a cabbage to create what he termed the rabbage. This hybrid should have been impossible, as radishes and cabbages are unrelated. However, the plant never gained popularity because it failed to resemble either a radish or a cabbage.
Later, in 1993, the Sakata Seed Company of Yokohama, Japan, crossbred broccoli with kai-lan to produce broccolini, also known as baby broccoli, asparation, asparations, broccoletti, broccolette, and Italian sprouting broccoli. This vegetable is a descendant of wild mustard and represents the Chinese variant of broccoli.
9. Orange
Numerous varieties of the orange exist today, but all of them originate from a man-made hybrid created by crossing the pomelo with the mandarin. While the pomelo is nearly as bitter as a grapefruit, the mandarin is sweet and has an orange hue, often leading people to mistakenly identify it as an orange variety. However, the mandarin is actually an ancestor of the orange.
The origins of the orange remain somewhat unclear, but it is thought to have first emerged in southern China. Over time, humans have selectively bred oranges to produce numerous varieties, which has led to confusion between oranges and other citrus fruits. To be classified as an orange, a fruit must have descended from both the pomelo and the mandarin.
That said, the tangerine is not considered an orange because it evolved solely from the mandarin, not the pomelo. However, the tangelo, which we’ll discuss later, occupies a gray area. It is a hybrid of a tangerine and a pomelo, and as previously mentioned, the tangerine itself originated from the mandarin.
8. Peanut
The modern peanut is a hybrid of two earlier peanut species: the Arachis ipaensis and the Arachis duranensis. The Arachis duranensis thrives in the Andean valleys between Bolivia and Argentina, while the Arachis ipaensis is native to Bolivia.
The two plants were located so far apart that natural crossbreeding was impossible. Researchers eventually found that early South American settlers brought the Arachis duranensis from the Andean valleys as they moved into what is now Bolivia around 10,000 years ago.
However, the settlers didn’t immediately recognize the potential of their new crop. Instead, bees played a crucial role by cross-pollinating the two peanut varieties, resulting in a new peanut that became the ancestor of today’s peanuts.
7. Banana
The common banana we know today is a man-made hybrid of the wild Musa acuminata and Musa balbisiana species. While Musa acuminata has a fleshy interior, its taste is far from pleasant. On the other hand, Musa balbisiana has a delightful flavor but is packed with too many seeds.
These two bananas naturally crossbred in the forests of South Asia. However, the resulting hybrid, which is the ancestor of the modern banana, was sterile. Around 10,000 years ago, early humans discovered this hybrid and realized they could propagate it by replanting its shoots. Through selective breeding, they cultivated bananas with desirable traits, ultimately leading to the creation of the modern banana.
Despite creating the ideal banana, we haven’t found a way to grow them from seeds. This means bananas could face extinction if we stop cultivating them. The lack of seeds also ensures that all bananas share identical genetic traits, as they are propagated from the shoots of existing trees. Consequently, a single disease could potentially wipe out every banana tree worldwide.
6. Almond
The almond is a human-made hybrid derived from the wild almond, which is famously bitter and potentially lethal if consumed in large quantities. The origins of the modern almond remain unclear, and researchers are still unable to pinpoint which variant of the wild almond was selectively bred to produce the almond we know today.
Scientists have their hypotheses, however. They believe the wild ancestor of the almond is the Amygdalus fenzliana (Fritsch) Lipsky, as its trees, seeds, and fruits closely resemble those of the modern almond. This species is also found in Armenia and Azerbaijan, regions where the almond is thought to have been selectively bred by ancient humans. Despite this, researchers remain puzzled about how our ancestors managed to develop a sweet, non-toxic almond, given that the wild variety is poisonous.
SEE ALSO: 10 Foods That Exist Because Of Ancient Genetic Engineering
5. Grapefruit
The grapefruit is a relatively recent hybrid. It is widely believed, though not confirmed, that the grapefruit first emerged around 1693 when Captain Shaddock brought pomelo (Citrus maxima) seeds to the West Indies and planted them near orange trees. The pomelo and orange eventually cross-pollinated, resulting in the grapefruit, initially called shaddocks. However, the grapefruit remained unknown outside the Caribbean for some time.
Europeans became aware of this citrus fruit in 1750 when Reverend Griffith Hughes came across one. Hughes was so astonished by the discovery that he dubbed the grapefruit “the forbidden fruit.” This name persisted until 1814, when John Lunan, a Jamaican planter and magistrate, renamed it grapefruit due to its resemblance to smaller, unrelated grapes while still on the tree.
The grapefruit arrived in the United States in 1823 but was initially mistaken for the pomelo. It wasn’t recognized as a distinct fruit until 1837. Even then, botanists remained uncertain about its origins. It wasn’t until 1948 that they confirmed it was a hybrid of the pomelo and the orange.
4. Boysenberry
The boysenberry was developed by Rudolph Boysen in Orange County, California, in 1923. Boysen, a horticulturist, planted grafted berry vines on his in-laws' farm in Anaheim, eventually producing a successful hybrid. Unfortunately, Boysen’s berries failed to achieve commercial success, and it appeared his unique creation might fade into obscurity.
A few years later, Walter Knott, a California farmer, learned about the berry and sought permission from Boysen to revive it. Knott successfully cultivated the nearly extinct hybrid at his farm in Buena Park, California. He named the fruit after Boysen, and Knott’s Berry Farm eventually grew into the world-famous amusement park known today.
The boysenberry is often regarded as a variant of the blackberry, but it is actually a hybrid of a blackberry and either the loganberry or red raspberry. It’s possible that Boysen created the berry using all three types of vines.
However, some argue that the boysenberry is a cross between the Eastern dewberry and the man-made loganberry. The loganberry itself was created in 1881 when James Logan combined a raspberry with a wild blackberry. Despite its unique origins, the early boysenberry struggled commercially due to its extremely short shelf life, spoiling just two days after being harvested.
3. Strawberry
The modern strawberry is a human-made hybrid derived from the smaller wild strawberry, which boasts a superior flavor and aroma but a much shorter shelf life. The modern strawberry first emerged in France during the 18th century, though the hybridization efforts began much earlier.
In the 1300s, French botanists began cultivating wild strawberries in their gardens after discovering that these plants reproduced through cloning. Interestingly, some strawberries never bore fruit, and half of those that did eventually stopped cloning and producing fruit after a few years.
The French succeeded in growing wild strawberries that were 15 to 20 times larger than their natural size, though they remained quite small. On July 6, 1764, Antoine Nicolas Duchesne created the modern strawberry by crossing a male Fragaria moschata with a female Fragaria chiloensis from Chile.
Before Duchesne’s breakthrough, French botanists were unaware that strawberries had distinct male and female parts. This oversight explained why some plants never produced fruit, as botanists had often planted only one gender. Duchesne continued refining the strawberry until the French Revolution, after which American and British botanists further perfected the modern strawberry.
2. Carrots
Carrots weren’t always orange. Originally, they were either white or purple and likely inedible. Some records suggest white carrots were consumed in the Roman Empire, though historians speculate these might have been parsnips, white carrots, or both. The orange carrot we know today is a hybrid of the yellow carrot, which itself is a hybrid of the white carrot.
The earliest-known ancestor of the modern edible carrot appeared in Persia during the 10th century. Some sources describe it as white, while others claim it was purple. Unlike today’s carrots, these ancient vegetables had numerous smaller roots of varying sizes. Persians selectively bred carrots with the largest roots to develop a single, larger root over time.
Through continued selective breeding, carrots evolved from white or purple to yellow and eventually orange. This process persisted into modern times to enhance their flavor and color.
1. Tangelo
As previously mentioned, the tangelo is a human-made hybrid of the tangerine and the pomelo. Its name is derived from this combination. However, many people often mistake the tangelo for the tangerine, mandarin, or orange.
Adding to the confusion, tangelos come in various varieties, and not all are derived from tangerines and pomelos. One well-known type, the Minneola tangelo, is a hybrid of the tangerine and the Duncan grapefruit. Another variety was developed by crossing a mandarin with a pomelo, which technically classifies it as an orange.
The tangelo is thought to have originated in the forests of Southeast Asia around 3,500 years ago, when insects cross-pollinated mandarins with a fruit closely related to the grapefruit. However, the tangelos we know today are the product of selective breeding efforts that began in the 1800s.
The United States Department of Agriculture (USDA) played a leading role in the tangelo project, creating the popular Minneola tangelo widely sold across the U.S. The USDA released the Minneola tangelo seeds in 1931, naming it after the city of Minneola, Florida.
