It is a selection of the Balehonnur Coffee Research Station in India and it originated from a natural hybrid between C. arabica and C. liberica known as S288 and the Kent cultivar, a hybrid of typica and an unknown other type2. Both S288 and the Kent cultivar are known to be resistant to many rust races and the Kent cultivar is a high-yielding tree. The resultant S795 cultivar exhibits rust resistance, high yield, and a good cup profile, making it a highly desirable cultivar.
In Indonesia, it is commonly referred to as Jember because it was supplied by the Jember Coffee Research center in Surabaya.
In India, it represents 25-30% of the acreage of arabica coffee3.
S795 is a member of the Linie S line of Indonesian subspecies bred specifically for resistance to the coffee leaf rust disease4.
I’ve seen S795 also written as S.795 and S-795.
1. Value Chain Struggles: Institutions and Governance in the Plantation Districts of South India, p. 124↩
2. Coffee: Botany, Biochemistry, and Production of Beans and Beverage. pp 52-53↩
3. NARASIMHASWAMY, R.L. (1960). “Arabica selection S.795-its origin and performance-a study”. Indian Coffee 24: 197–204. ↩