Kết quả phục tráng giống dong riềng đỏ Na Rì tại Bắc Kạn

Abstract

Na Ri red canna variety (Canna edulis Ker Gawl) is well adapted to the climate and soil characteristics of Bac Kan province. However, after many years of self-cultivation and propagation by farmers, the Na Ri red canna variety has been mixed and degraded, leading to a decrease in yield and quality. From 2019 to 2021, the Na Ri red canna variety is purified by the method of population selection combined with individual selection with the aim of improving yield and starch content. The results of monitoring and evaluating the traits and yield components in the field have selected 672 S₀ lines (with the same growth period) used to evaluate the main traits in the field and room. In the second crop, 549 S₁ lines were selected. In the third crop, 344 S₂ lines were selected with the same growth period of 280 days, with the similar yield components used to compare and multiply the S₂ generation. From 344 S₂ lines, 200 standard S₃ lines were selected to be mixed into purified varieties. The restored variety has an average yield of 64.6 tons/ha, and the starch content was 28.13%, higher than 58.4% that of the unrefined variety.