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Carrot

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The carrot (Daucus carota subsp. sativus) is a widely cultivated root vegetable.

Carrots of many colors
Carrots of many colors

While many people associate them with the color orange, many heirloom varieties exist. These include cultivars that are purple, black, red, white, and yellow. All these varieties are domesticated forms of the wild carrot, Daucus carota. This wild ancestor is native to Europe and Southwestern Asia. The carrot is a biennial plant, meaning it completes its life cycle in two years. It belongs to the Apiaceae family, which is also known as the umbellifer family.

As a biennial, the carrot follows a specific two-stage growth process. In the first year, the plant focuses on energy storage. It directs this energy into a large taproot. This stored energy is essential for the plant to produce flowers in its second year. The taproot is composed of two main parts: a pulpy outer cortex, also called the phloem, and an inner core called the xylem. High-quality carrots typically have a larger proportion of cortex compared to the core.

Carrots of many colors
Carrots of many colors

While a carrot cannot completely lack xylem, some cultivars have very small or deeply pigmented cores.

The physical structure of the plant changes significantly as it matures. After germination, seedlings show a clear distinction between the stem and the taproot. The stem is thicker and lacks lateral roots. The first true leaf appears about 10 to 15 days after germination. These leaves are pinnately compound and arranged spirally around the stem. As the plant grows, the stem stays compressed just above the ground. When it is time to flower, the tip of the stem narrows and becomes pointed. It then extends upward to form a highly branched inflorescence, which is a cluster of flowers.

Carrot seeds
Carrot seeds

Carrot flowers grow in a complex arrangement called a compound umbel. An umbel is a cluster where many small stalks spread from a single point. A large primary umbel can contain up to 50 smaller umbellets. Each umbellet may contain as many as 50 small, white flowers. These flowers often have a light green or yellow tint. The flowering process follows a centripetal pattern, meaning the oldest flowers are at the edge. The youngest flowers are located in the center. This flowering period can last between 30 and 50 days.

Carrot seeds
Carrot seeds

History shows that the carrot has changed significantly through human cultivation. Early records suggest carrots were originally grown for their aromatic leaves and seeds. Carrot seeds have been discovered in Switzerland and Southern Germany dating back to 2000–3000 BC. In the 1st century AD, the Romans ate a root vegetable called pastinaca. This might have been the carrot or a related plant like the parsnip. By the 10th century, roots from West Asia, India, and Europe were often purple. The modern orange carrot likely emerged in the early 18th century. Dutch growers are credited with breeding the "Long Orange" cultivar.

Carrot, Juliana Anicia Codex
Carrot, Juliana Anicia Codex

Cultivation requires specific environmental conditions to ensure a successful harvest. Carrots grow best in full sun with temperatures between 15 and 20 degrees Celsius. They require deep, loose, and well-drained soil, such as sandy or loamy types. If the soil is too rocky, the roots may become hairy or misshapen. Farmers must manage nutrients carefully, providing low nitrogen and high potash.

Harvesting carrots
Harvesting carrots

In 2022, global production of carrots and turnips reached 42 million tonnes. China led this production, accounting for 44% of the total. Most cultivars are ready to harvest within 70 to 80 days, though some take up to 120 days.

Beyond nutrition, the carrot has a unique chemical makeup. The bright orange color comes from a substance called beta-carotene. This compound makes carrots a very rich source of vitamin A. Carrots also contain polyacetylenes, such as falcarinol and falcarindiol. Falcarindiol is the main compound responsible for bitterness in carrots. It also shows antifungal activity against certain types of fungi.

BetaCarotene-3d
BetaCarotene-3d

During the Second World War, a myth was spread that carrots helped people see in the dark. This was actually propaganda used to explain why British pilots could fight effectively at night. The true reason for their success was the introduction of radar technology.

Chamaepsila rosae, wortelvlieg (2)
Chamaepsila rosae, wortelvlieg (2)
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🖼️ Images & Media (7)
File:BetaCarotene-3d.png
BetaCarotene-3d.png
File:Carrot, Juliana Anicia Codex.jpg
Carrot, Juliana Anicia Codex.jpg
File:Harvesting carrots.jpg
Harvesting carrots.jpg
File:Chamaepsila rosae, wortelvlieg (2).jpg
Chamaepsila rosae, wortelvlieg (2).jpg
File:Carrot seeds.jpg
Carrot seeds.jpg
File:Kintoki ninjin by titanium22 in Nishiki Ichiba, Kyoto.jpg
Kintoki ninjin by titanium22 in Nishiki...
File:Carrots of many colors.jpg
Carrots of many colors.jpg
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