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Beta vulgaris

life science Maturity 5-7 Next article →

The beet, known scientifically as *Beta vulgaris*, is a versatile flowering plant.

Beets-Bundle
Beets-Bundle

It belongs to the family Amaranthaceae and the subfamily Betoideae. This species is highly significant because humans have adapted it for many different uses. We grow it for food, for animal feed, and even for industrial sugar.

Sugar beets
Sugar beets

While it can be a perennial plant, most cultivated versions are biennials. This means they complete their life cycle over two years. The plant is highly adaptable and can grow in many different environments across the globe.

Understanding how the beet grows requires looking at its biological structure.

Suikerbiet bloem Beta vulgaris
Suikerbiet bloem Beta vulgaris

The plant has stems that can grow straight up or spread along the ground. Its leaves are often heart-shaped or oblong with a prominent midrib. In many cultivated types, the roots become fleshy and swollen. These roots can be dark red, white, or even yellow. The plant produces small, urn-shaped flowers in dense clusters called inflorescences. These flowers are often pollinated by the wind, though insects help as well.

Suikerbiet bloeiwijze Beta vulgaris
Suikerbiet bloeiwijze Beta vulgaris

Inside the seeds, there is a specialized feeding tissue called perisperm that supports the embryo.

Scientists classify *Beta vulgaris* into three distinct subspecies.

The first is *Beta vulgaris* subsp. *maritima*, known as the sea beet. This is the wild ancestor of all the beets we eat today. It grows on coastal cliffs and sandy beaches near the sea. The second subspecies is *Beta vulgaris* subsp. *adanensis*. This variety is found in the steppes and disturbed habitats of Southeast Europe and Western Asia. The third and most common subspecies is *Beta vulgaris* subsp. *vulgaris*. This subspecies includes almost all the different cultivated groups used by humans.

The history of beet classification is quite complex.

In 1753, the scientist Carl Linnaeus first described the species in his work *Species Plantarum*. At that time, he viewed the sea beet and chard as mere varieties. By 1762, he updated his classification to list the sea beet as a separate species. Today, scientists recognize them as the same species because they can hybridize. This means they can mate to produce fertile offspring. Modern naming for the many cultivated groups now follows the International Code of Nomenclature for Cultivated Plants.

Cultivated beets are divided into five major groups based on their use.

Sugar beets
Sugar beets

The Altissima group contains the sugar beet, a major commercial crop. It was developed in Germany during the late 18th century to produce sucrose. The Cicla group includes chard or spinach beet, which has been used for food since the second millennium BC. The Flavescens group is Swiss chard, which is known for its thick, fleshy midribs. The Conditiva group is the traditional red garden beet, often used in soups like borscht. Finally, the Crassa group is the mangelwurzel, a large root grown as fodder for animals.

One of the most striking features of the beet is its color.

Uncommon beetroot colours
Uncommon beetroot colours

Unlike red cabbage, which uses anthocyanin, beets use pigments called betalains. These include betacyanins, which provide red and violet tones, and betaxanthins, which provide yellow and orange tones. These pigments are stored in tiny compartments within the cells called vacuoles. Because these cells are unstable, they can "leak" when the plant is cut or heated. This is why beets leave a strong purple stain on surfaces. Some people may also experience beeturia, where their urine turns red due to these pigments.

Beets are also highly specialized in how they interact with the soil.

chard3
chard3

They are very dependent on a nutrient called boron. On commercial farms, a harvest of 60 tonnes per hectare might require 600 grams of elemental boron per hectare. Without enough boron, the plant's growth can fail, leading to a condition called heart rot. This need for boron likely comes from their ancestors, which lived in salty sea spray. Furthermore, the "earthy" taste many people notice in beets might come from a substance called geosmin. Scientists are still studying if the plant makes this itself or if soil microbes produce it.

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🖼️ Images & Media (9)
File:Suikerbiet bloem Beta vulgaris.jpg
Suikerbiet bloem Beta vulgaris.jpg
File:Beta vulgaris subsp maritima 89-08.JPG
Beta vulgaris subsp maritima 89-08.JPG
File:Suikerbiet bloeiwijze Beta vulgaris.jpg
Suikerbiet bloeiwijze Beta vulgaris.jpg
File:chard3.jpg
chard3.jpg
File:Beets-Bundle.jpg
Beets-Bundle.jpg
File:Uncommon beetroot colours.jpg
Uncommon beetroot colours.jpg
File:Biarava confezionata.jpg
Biarava confezionata.jpg
File:Beta vulgaris maritima 001.JPG
Beta vulgaris maritima 001.JPG
File:Sugar beets.jpg
Sugar beets.jpg
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