HDT, which stands for Hibido de Timor, is also known as “Tim Tim”. Tim Tim in Indonesian stands for Timor Timur (East Timor in English), which used to be the 27th province of Indonesia before it declared its independence as Timor Leste.
HDT is a cross between Arabica and Robusta. It was first found in a plantation of cultivar Typica in Timor Island in 1917. It was then first collected in East Timor in 1978 and was planted in Aceh in 1979.
The variety is widely cultivated around the world today mainly for its good resistance towards leaf rust and has found extensive use as a gene source in different breeding projects with the purpose of breeding in a higher resistance towards leaf rust and other diseases. Some varieties emerging include: Catimor, Sarchimor in Brazil, Ruiru 11 in Kenya, Colombia in Colombia and Costa Rica 95 in Costa Rica.