Rare Jackson 2 Coffee varieties 157 and K7 | more than 60 species of Coffee in the World

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We know that there are many varieties of coffee beans. Among the three major varieties, Arabica alone can distinguish many varieties of coffee, such as Iron pickup, Bourbon, Rosa, Kaddura, Kaduai, and so on. Today, Qianjie Coffee would like to introduce to you two relatively rare varieties of coffee, Jackson 2amp 157 and K7.

The genus Coffee consists of more than 120 species, usually opposite leaves, evergreen shrubs or small trees with horizontal branches. Contains opposite species, one side is flat, and the other side has grooves (right! It's coffee beans! ). Tropical forests are the preferred habitat for most coffee plants. There are about 60 species of coffee plants in the world, of which only 25 species are cultivated to make coffee, of which only 4 species are used as commercial coffee: large fruit coffee (Coffea liberica), medium fruit coffee (Coffea canephora), small fruit coffee (Coffea arabica) and high yield coffee (Coffea dewevrei).

Jackson

Very strong, high-yield variety. Common in Rwanda and Burundi

At the beginning of the 20th century, Jackson, a coffee farmer in Mysore, found a coffee tree that was resistant to coffee leaf rust on his farm. The variety has lost its tolerance and is now susceptible to leaf rust. Name this breed after the discoverer.

In the 1920s, the seeds of these trees were transported to research stations in Kenya and Tanzania. These primitive trees are the Jackson species common in Rwanda. (on the surface of the literature: this variety may have been collected from Mulungu in the Democratic Republic of the Congo in the 1930s, or it may have been brought to Rwanda by Kenyan immigrants at the end of the 40s.)

Jackson, Kent, Kourg and Mysore all come from the same region of India. Coffee in this area is most likely developed from the seeds Babudan brought to India from Yemen in 1670. The closest genetic tests confirmed that Jackson was related to the Bourbon family.

K7

Resistance to coffee leaf rust and coffee berry disease is common in Kenya and Tanzania.

K7 is known for its resistance to rust and coffee berry disease and is widely used in modern breeding programs in Kenya and Tanzania.

K7 is the fifth generation variety selected from the original population in 1936 by the Scott Agricultural Laboratory in Kenya (for the history of the Scott Laboratory, see SL28). At present, it is still widely cultivated in Kenya.

According to P.A.Jones, an agricultural official at the Kenyan Coffee Research Station in the 1950s, K7 was one of two coffee trees Mr. R.H.Walker chose in 1936 from French missionary varieties at Leggett Manor in Muhorohi. (for more information on national missionary varieties, see SL34. One of the varieties, later named K7, is apparently immune to coffee leaf rust for several years (the variety is no longer resistant).

The most subsequent genetic tests confirmed that Jackson was related to the Bourbon family.

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