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Triticale

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Triticale is a unique hybrid cereal grain. It is created by crossing wheat (Triticum) with rye (Secale). This plant is valuable because it combines the strengths of both parents. It offers the high yield and grain quality of wheat. It also provides the environmental tolerance of rye. Rye helps the plant survive in poor soil conditions and resist diseases.

Wheat, rye, triticale montage
Wheat, rye, triticale montage

The creation of triticale is a complex biological process. Scientists use wheat as the female parent. They use rye as the male parent to provide the pollen. The first generation of these hybrids is sterile. This means the plants cannot reproduce on their own. To fix this, scientists use a chemical called colchicine. This substance induces polyploidy, which is the doubling of chromosomes. This doubling allows the plant to become fertile.

Wheat, rye, triticale montage
Wheat, rye, triticale montage

Scientists classify triticale into different types based on ploidy. Ploidy refers to the number of sets of chromosomes in a cell. There are three main nothospecies used in breeding. The first is tetraploid triticale, known as × Triticosecale semisecale. This type is unstable but useful for breeding bridges. The second is hexaploid triticale, or × Triticosecale neoblaringhemii. This is a stable and very successful agricultural crop. The third is octaploid triticale, or × Triticosecale rimpaui Wittm. This type is mainly of historical importance.

Wheat, rye, triticale montage
Wheat, rye, triticale montage

The history of triticale began in the late 19th century. In 1873, Alexander Wilson manually fertilized wheat flowers with rye pollen. He discovered the resulting plants were sterile, similar to a mule. In 1888, a partially fertile hybrid called "Tritosecale Rimpaui Wittmack" was produced. For many years, scientists could only produce partially fertile plants. In 1937, the use of colchicine allowed for successful chromosome doubling. This made triticale a viable crop. The first commercial variety was finally released in 1970.

Wheat, rye, triticale montage
Wheat, rye, triticale montage

Triticale has significant global importance in agriculture. In 2014, 37 countries harvested 17.1 million tons of the grain. The primary producers include Poland, Germany, Belarus, France, and Russia. The International Maize and Wheat Improvement Center (CIMMYT) works to improve the crop. Their goal is to boost nutrition and food production in developing countries. In 1968, a high-yielding line produced 2.4 tons per hectare. Today, some modern lines can exceed 10 tons per hectare.

Wheat, rye, triticale montage
Wheat, rye, triticale montage

This grain has several unique nutritional and practical uses. Triticale has a higher protein content than wheat. It also contains higher levels of the amino acid lysine. It is widely used as a feed grain for animals. Some research suggests its starch is very easy to digest. Beyond animal feed, it can be used for bioethanol production. It has even been used to produce vodka. You might find it in breakfast cereals or used for pasta and pizza dough.

Wheat, rye, triticale montage
Wheat, rye, triticale montage

Modern breeding focuses on improving many different traits. Scientists work on grain yield, nutritional quality, and plant height. They also try to improve "lodging" resistance. Lodging is when the plant stem topples over in the wind. They use dwarfing genes, called Rht genes, to reduce plant height. This helps the plant stay upright without losing quality. Researchers also study disease resistance, such as the Sr27 gene. This gene helps the plant fight stem rust.

Wheat, rye, triticale montage
Wheat, rye, triticale montage
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