Roberto Hugo Tirado Malaver, Roberto Tirado-Lara, Nayla Fabian-Anastacio


Background: Sweet potato (Ipomoea batatas L.) is a crop of great importance in social, economic and industrial terms due to its forage aptitude, high yield potential and quality of storage roots, necessary as human food and also as raw material for bioethanol production a promising substitute for fossil fuels or to boost alcohol production. Objective: To compare improved sweetpotato clones under different growing seasons and to select a promising new cultivar with high yield potential and bioethanol production from storage roots in Peru. Methodology: The combined analysis of variance was used during two seasons (summer and spring) in Lambayeque, Peru. The yield of storage roots was evaluated, with respect to the quality, the percentage of dry matter and the production of bioethanol were evaluated, which was analyzed by the enzymatic hydrolysis of the starch of four clones and a control variety. Results: The combined analysis of variance shows that the clones presented a significant effect on the variables under study. Likewise, the clone CIP 199071.8 with the highest yield of storage roots was identified during season 1 (summer) with an average of 67.4 ± 1.2 t ha-1 and in season 2 (spring) with 73.4 ± 0, 8 t ha-1 regarding the combined analysis obtained 70.4 ± 1.1 t ha-1. In addition, the present clone with an average of 28.9 ± 1.4% of dry matter stands out statistically, in fact the same clone 199071.8 reported the highest bioethanol production in season 1 (summer) with an average of 7089.6 ± 2, 2 L ha-1 of bioethanol and in season 2 (spring) it reached the highest bioethanol production with an average of 7875.1 ± 1.9 L ha-1. Regarding the combined analysis, it obtained 7553.2 ± 1.7 L ha-1 of bioethanol. Implications: The sweet potato clones had a significant effect on the yield and quality of the storage roots, a necessary source for human food or industrial input. Conclusion: The clone CIP 199071.8 reached the highest yield of storage roots, dry matter and bioethanol production during the two growing seasons (summer 2019 and spring 2019), therefore, it will be released as a new cultivar.


alcohol; season; hydrolysis; raw material, storage roots.

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