Evaluation of productivity of sweet potato genotypes for first and second generation bioethanol production

Abstract

The increased supply of ethanol fuel and its spread as an alternative to fossil fuels depend on the exploration of biomasses that can be regarded as alternatives to sugarcane and maize. In this study, the agricultural productivity and the potential for production of ethanol from roots and the aerial portion of twenty sweet potato genotypes were evaluated. The roots and branches were harvested 180 days after planting. Starch, hemicellulose, cellulose, lignin and soluble sugars from sweet potato roots or branches were determined and expressed as percentage of dry matter produced per hectare. The genotype UFVJM 28 stood out for the production of root and branches (fresh material), yielding 43.5 and 31.7 t ha . Considering the combined use of roots and branches, at least four sweet potatoes genotypes presented a potential for ethanol production greater than 4000 L ha -1 in a 180-day cycle.

Seed germination of seeds preserved for about 20 years and that of seeds preserved for several years

“…There are several reports about genetic diversity, germplasm or seed of plant (Admas and Tesfaye, 2017;Ali et al, 2018;Arantes et al, 2018;Chalachew et al, 2017;Chandra et al, 2017;Daniel et al, 2017;Dilooshi et al, 2016;Santos et al, 2017;Ejigu et al, 2018;Emmanuel et al, 2018;Isaac et al, 2016;Lopez-Puc and Rodriguez-Buenfil, 2017;Revolti et al, 2018;Miccah et al, 2016;Mohammad et al, 2016;Mounawer et al, 2016;Mulima et al, 2018;Ochieng et al, 2015;Pacôme et al, 2016;Raimundo et al, 2015;Rodrigues et al, 2016;Tadesse et al, 2018;Titilayo et al, 2018;Zerihun et al, 2018), fungi (Edelvio, 2018;Ling et al, 2016;Shubha and Srinivas, 2017), bacteria (Chaohe et al, 2015;Paul et al, 2016), and virus (Chikoti et al, 2015).…”