Banana

The banana is an elongated, edible fruit belonging to the genus *Musa*.

While many people think of them as trees, they are actually the largest herbaceous flowering plants on Earth. Botanically, the fruit is classified as a berry. It features soft, starchy flesh protected by a peel that changes color as it ripens.

Bananas are vital global crops. They are grown in 135 countries for food, textiles, and paper. In 2022, India and China were the top producers. Together, these two nations accounted for approximately 26% of total global production.

Understanding how a banana plant grows requires looking at its unique structure. All above-ground parts grow from a base called a corm. The plant lacks a wooden trunk. Instead, it uses a pseudostem, which is a fake stem made of tightly packed leaf stalks, or petioles.

These sheaths form a tube that supports the plant's weight. As new growth emerges from the center, it forces the edges of the sheaths apart. When the plant matures, it produces a flower spike called an inflorescence, often called a "banana heart." This spike grows up through the pseudostem to emerge at the top. The plant is a perennial, meaning it lives for many years through offshoots from the base.

The fruit develops in large hanging clusters called bunches. A single bunch can weigh up to 35 kilograms. These bunches are organized into about nine tiers known as hands. Each hand can hold up to 20 individual fruits. The fruits develop from the female flowers located on the stem. The ovaries of these flowers become the fruit we eat. In most cultivated varieties, the fruit is parthenocarpic, which means it develops without seeds. This makes them easy to eat, but it also makes breeding new varieties very difficult.

The history of the banana is tied to ancient migrations. Most modern edible bananas come from two wild species: *Musa acuminata* and *Musa balbisiana*. These species are native to tropical Indomalaya and Australia. Scientists believe domestication began in New Guinea. Evidence shows humans were cultivating them as far back as 10,000 years ago. From New Guinea, they spread to Southeast Asia. There, they hybridized to create the triploid cultivars we recognize today. Austronesian peoples eventually carried them to Oceania, Africa, and South Asia via maritime trade routes.

Classification of bananas has historically been quite complex. Carl Linnaeus created the genus *Musa* in 1753. He originally divided them into two species based on use: *Musa sapientum* for dessert bananas and *Musa paradisiaca* for plantains. Later, researchers like Ernest Cheesman proved these were actually cultivars. He showed they descended from the two wild species mentioned earlier. Today, scientists use genome-based systems to classify them. This helps manage the massive variety of cultivars found in Southeast Asia, where the distinction between "dessert" and "cooking" bananas often disappears.

Modern banana production faces serious biological threats. Because many commercial varieties are genetically similar, diseases can spread quickly. One major threat is Panama disease, caused by a *Fusarium* fungus.

Another serious issue is Black Sigatoka. These diseases specifically threaten the Cavendish banana. The Cavendish is the main variety eaten in Western markets. It is a triploid *Musa acuminata*. To protect the future of the fruit, scientists store banana germplasm in gene banks. These banks act as a biological backup to ensure new varieties can be bred if current ones fail.

Bananas serve many different roles in global culture. In the Americas and Europe, people usually separate "bananas" from "plantains." Dessert bananas are sweet and eaten raw. Plantains are starchy and are typically cooked in curries, fritters, or chips. However, in Southeast Asia, many bananas are used for both purposes. Some varieties, like the Fe'i bananas of the Pacific, are mostly cooked. Others, like the red Karat bananas, are eaten raw. This diversity shows how a single genus can adapt to many different culinary traditions and environments.