Performance of sweet potato clones for starch and ethanol in three regions of the state of Sergipe, Brazil

Abstract

Sweet potato (Ipomoea batatas L.) is a species that belongs to the family Convolvulaceae, and is originated from Central America and South America. As the growing conditions have great influence on the crop, the determination of harvesting time may vary with the cultivar, the growing region, or with the type of consumption (in natura or industrial). The aim of this work was to evaluate the performance of Ipomoea batatas L. clones, cultivated in three regions in the state of Sergipe, for starch and ethanol production. Thirty-one sweet potato clones grown in three municipalities of the state of Sergipe were tested in a randomized block design. The following variables were analyzed: root dry matter content (RDMC), root starch content (SC), starch yield (SY), ethanol yield (EY), and ethanol yield per ton of root (EYR). EY values ranged from 5910.39 to 8516.12 L ha -1 ; from 5141.85 to 6937.63 L ha -1 ; and from 5829.62 to 8211.77 L ha -1 in the municipalities of São Cristóvão, Malhador, and Canindé de São Francisco, respectively, for clones IPB-075 and IPB-087 and cultivar Palmas. Estimates of heritability (h 2 ) were above 50%. The values of the ratio between the coefficient of genetic variation (CV g ) and the coefficient of environmental variation (CV e ) for RDMC, SC, and EYR were high.

Morpho-agronomic characterization of Varronia curassavica germplasm conservated “Ex situ”

“…Morphological and agronomic characterization is the starting point for the knowledge of a plant species, especially when the objective is the selection of accessions of interest both for cultivation and for use in breeding programs (BLANK et al, 2017;OLIVEIRA et al, 2018). Therefore, this study aimed to morphoagronomically characterize 27 V. curassavica accessions of the Active Germplasm Bank of Medicinal and Aromatic Plants of the Federal University of Sergipe.…”

Comparação De Métodos De Extração De Rna Aplicados a Culturas Amiláceas Utilizadas Na Produção De Etanol

“…Entretanto tem-se buscado, de maneira geral, maior diversificação de matérias-primas por proporcionarem a descentralização da produção, o que permite maior participação do pequeno agricultor, além de influenciar diretamente no custo final do produto (Mei e Rakhmatov, 2014;Silveira et al, 2014 Silveira et al, 2014;Li et al, 2015;Zhang et al, 2016;Blank et al, 2017;Lourenço et al, 2018).…”