Coffee species gene mutant

From left to right: Kenya round beans, elephant beans, Kenya AA

Pointed Bourbon (Bourbon Pointu): found in Bourbon Island in 1810, beans changed from round to pointed, with only half the caffeine content, but in small amounts, weak and extremely precious (mostly cultivated in the laboratory).

Elephant bean (Maragogype, or Elephant Bean): Tibica's best-known variety of beans, first discovered in 1870 in the Maragogype bean-producing region of the state of Bahia in northeastern Brazil, is at least three times larger than the average Arabica, hence the name. The taste of elephant bean is poor in low altitude area, but it has better flavor at high altitude, mild sour taste and sweet fragrance.

Geisha (Geisha): a derivative of the Tibika family, it was exported from the Geisha Mountains of southern Ethiopia in 1931 (Geisha is synonymous with Japanese geisha). After being unknown in many countries, it was transplanted to Panama in the 1960s and did not begin to win cup tests until 2005.

Kenyan "SL28" and "SL34": the bourbon line, screened and cultivated by French and British missionaries and researchers in Kenya in the early 20th century, has adapted to Kenya's high-concentration phosphate soil for a century, giving birth to Kenyan characteristics of sour elves; top Kenyan coffee comes from these two varieties, but it loses its flavor when transplanted elsewhere.

Yellow bourbon (Bourbon Amarello, or Yellow Bourbon): a bourbon variety endemic to the Brazilian state of Sao Paulo, where the coffee fruit does not turn red and is orange when ripe. It was later found that the pericarp of other local bourbon-derived varieties also turned yellow.

Kaddura (Caturra): a single genetic variant of bourbon, discovered in Brazil in the 1950s. The long-term ability and disease resistance are better than bourbon, and no shade tree is needed; the flavor is equal to or slightly worse than bourbon.

Pacas (Pacas): the bourbon variety found in El Salvador, which was transplanted into El Salvador coffee farmer Pacas in 1935, yielded more results than other coffee trees of the same species in 1956. Experts were asked to identify and confirm that there was a genetic mutation.

The bourbon variety, which was first discovered in Costa Rica in the Villa Sarchi:1960 era, has often appeared on the cup test list of excellence in recent years.