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Pitaya

life science Maturity 9-11 Next article →

Pitaya is a unique fruit produced by several species of cactus.

Dragon fruit
Dragon fruit

It belongs to the Cactaceae family. Most people know it by the common name dragon fruit. This name comes from its appearance. The fruit has a leathery skin covered in scaly spikes. These features look very much like the skin of a dragon. Some people also call it a strawberry pear. Pitaya is grown in many tropical and subtropical regions. This includes East Asia, Australia, Brazil, and the Caribbean.

Dragonfruit Chiayi market
Dragonfruit Chiayi market

The way these plants grow is quite specialized. Pitaya cacti are climbing plants. As they grow, they look for something to climb on. They use aerial roots to hold onto structures. They also use basal roots in the soil. To produce fruit, the plant must first reach maturity. This can take up to 60 months, or about 260 weeks. Once mature, the plant can flower between three and six times per year. The flowers are very special because they bloom overnight. They usually wilt by the following evening. This timing means they rely on nocturnal pollinators. Animals like bats or moths visit the flowers at night to help with fertilization.

Pitaya (seedling)
Pitaya (seedling)

There are different types of pitaya based on their genus. The term pitaya often refers to the genus Stenocereus. These are often called sour pitayas. They are common in the arid regions of the Americas. The Seri people of northwestern Mexico harvest a variety called pitaya agria. They call the plant ziix is ccapxl, meaning "thing whose fruit is sour." Other species like the organ pipe cactus produce the pitaya dulce, or sweet pitaya. In contrast, the name pitahaya or dragon fruit usually refers to the genus Selenicereus.

Pitaya cross section ed2
Pitaya cross section ed2

Within the Selenicereus genus, there are three main varieties of sweet pitaya. The first is Selenicereus undatus. This is also called pitaya blanca. It has pink skin and white flesh. This is the most common dragon fruit seen in markets. The second type is Selenicereus costaricensis. This is known as pitaya roja. It features red skin and red flesh. The third type is Selenicereus megalanthus. This is called pitaya amarilla. It has yellow skin and white flesh. Most of these fruits weigh between 300 and 600 grams. However, some large fruits can reach 1,000 grams.

Pitaya cross section ed2
Pitaya cross section ed2

Scientists study the pigments that give these fruits their color. The red flesh in the red pitaya contains a pigment called betalain. This is also known as betacyanin. This is the same family of pigments found in beets and Swiss chard. The white-fleshed varieties do not have this color compound. Red pitaya also contains a higher level of polyphenols than the white variety. These pigments are important for the fruit's appearance. They also influence how the fruit is used in food and drinks.

Dragonfruit028
Dragonfruit028

Growing pitaya requires careful management of water and environment. Because they are cacti, overwatering is a major concern. Too much water or excessive rain can cause flowers to drop. It can also cause the fruit to rot. The plants can handle temperatures up to 45 degrees Celsius. They can also survive short periods of frost. However, they cannot survive long periods of freezing temperatures. They grow best in USDA zones 10 to 11. In some areas, these cacti have escaped farms. They have become invasive weeds in certain countries.

Lianjiang County - Dongdai Town - Yangguang Dragong Fruit Farm - P1510432
Lianjiang County - Dongdai Town - Yangguang Dragong Fruit Farm - P1510432

Humans use pitaya in many culinary ways. The texture is often compared to kiwifruit. This is because of the many small, crunchy black seeds inside. The fruit is composed of 84% water and 15% carbohydrates. The seeds also contain oil rich in linoleic acid. People use the fruit to color and flavor juices. Some drinks even use names like "Dragon's Blood Punch." You can even eat the flowers or use them to make tea. This makes the entire plant useful for food and drink.

Dragonfruit028
Dragonfruit028
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🖼️ Images & Media (6)
File:Pitaya cross section ed2.jpg
Pitaya cross section ed2.jpg
File:Dragonfruit Chiayi market.jpg
Dragonfruit Chiayi market.jpg
File:Dragonfruit028.JPG
Dragonfruit028.JPG
File:Dragon fruit.JPG
Dragon fruit.JPG
File:Pitaya (seedling).jpg
Pitaya (seedling).jpg
File:Lianjiang County - Dongdai Town - Yangguang Dragong Fruit Farm - P1510432.JPG
Lianjiang County - Dongdai Town -...
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