HomeInternational Rice Research Notesvol. 28 no. 1 (2003)

Lienge, a New Medium-Duration Upland Rice Variety Released in Republique Democratique du Congo

B. Mateso | K. Kasongo | K. Mbuya

Discipline: Science, Agriculture



Several upland rice varieties have been cultivated under upland (dryland) conditions, the main rice ecosystem in RDC. RY1 (IRAT2) is a 140-cm-high, medium-duration (120 d), blast-resistant, and lodging-tolerant variety. It was particularly selected for its high grain yield (av 3.2 t ha–1) and yield stability across locations. It was released in 1982, replacing R66, an old cultivar with a yield of 2.5 t ha-1. However, RY1 is sticky when cooked. It is less acceptable to consumers who prefer cooked rice that is harder, flakier, whiter, and denser in appearance and that remains soft even when stored overnight. This quality of RY1 rice after cooking  could be attributed to its low amylose content (15.6%) and this has resulted in poor acceptance by farmers.