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Characterization of New Rice Lines Adapted to Medium Altitude Ecological Conditions in Burundi

Rice is a portion of luxury food, a cereal that constitutes a major source of calories for the urban and rural population. It is the second-largest crop grown worldwide. In Burundi country, rice demand has been increasing more rapidly in both urban and sub-urban areas due to its use in alcohol and oil fabrication, marketing for household economic income, and cattle feeding. Unfortunately, rice production is limited due to population growth, coupled with its cultivation almost in lower altitude regions only. An experiment on the characterization of new rice lines for the development of high-yielding genotypes with desirable agronomic traits was carried out to assess the most adapted lines which could be recommended to farmers in the region. The experiment was laid out in randomized complete block design with three replications. It has considered 10 rice lignes (V3, V7, V8, V13, V14, V16, V18, V22, V34, V35), planted on 8 ha area, divided into single plots of 8 m2  each with 20 X 20 cm for spacing. Based on statistic analysis, the results of the study showed line V34 as the most adapted variety with significant differences compared to other lines. It showed improved growth parameters as plant height, panicles exsertion and panicles length. Moreover, this line V34 has recorded enhanced yield with p<0.05 as compared to others. Likewise, improved pinicles numbers and thousand grains weight were observed for this line V34. The study highlighted line V34 as the most adapted line that could be recommended to the people of the region.