Advances in the development of sweetpotato genotypes with high levels of beta-carotene for the state of São Paulo: phase II

• Grant number: 21/03537-1
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2022
• End date: January 31, 2024
• Field of knowledge: Agronomical Sciences - Agronomy - Crop Science
• Principal Investigator: Pablo Forlan Vargas
• Grantee: Pablo Forlan Vargas
• Host Institution: Centro de Raízes e Amidos Tropicais (CERAT). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil
• Associated researchers: Adalton Mazetti Fernandes ; Bruno Ettore Pavan ; Daniela Cardoso Umbelino Cavallini ; Maria Isabel Vaz de Andrade

Abstract

The consumption of sweet potato root is increasing of São Paulo state and Brazil because of quality of the food. The genotypes of orange-fleshed are rich in beta-carotene, a precursor of vitamin A. Currently, one of the challenges of the sweet potato production chain is the development of cultivars adapted to the state edaphoclimatic conditions. Thus, it is of very important to development new orange-fleshed sweet potato cultivars for subsistence farmers, low-income populations and production chain, in order to provide a cultivar with high productivity, good root appearance and high beta-carotene content. Given the above, the objective of this study is evaluated advanced sweet potato genotypes with high levels of beta-carotene in the edaphoclimatic conditions of the state of São Paulo. Three experiments (September-2021, December-2021 and March-2022) will be installed in each of the locations (Botucatu and Jaboticabal). The treatments (21) will consist of 19 sweet potato genotypes, with the addition of two cultivars as a control. For each of the experiments, will be carried out of stability and phenotypic adaptability analysis. Subsequently, the mixed model based methodology will be applied. Finally, the GGE-biplot methodology will be applied, which gives the possibility of, in addition to selecting for adaptability and general stability, also for specific adaptability. Additionally, an acceptance test of the roots of the evaluated genotypes will be carried out. All analyzes will be performed using the Genes and Selegen software. (AU)