A comparative evaluation of agronomic performance and kernel composition of normal and high sugary corn genotypes (Zea mays L.) grown for dry-grind ethanol production

Zabed, H. and Boyce, A.N. and Faruq, G. and Sahu, J.N. (2016) A comparative evaluation of agronomic performance and kernel composition of normal and high sugary corn genotypes (Zea mays L.) grown for dry-grind ethanol production. Industrial Crops and Products, 94. pp. 9-19. ISSN 0926-6690

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Official URL: http://dx.doi.org/10.1016/j.indcrop.2016.08.026

Abstract

High sugary corn genotypes (Zea mays L.) have the potential to reduce enzyme consumption and enhance ethanol yield during dry-grind ethanol production. In the present work, four high sugary and four parent field corn genotypes (HSGs and PFCs, respectively) were studied comparatively to evaluate agronomic performance and kernel composition of the genotypes, as well as predict the effects of these traits on carbohydrate accumulation in the kernels. The corn genotypes were grown over two cropping years (2012 and 2013) under rain fed conditions, and some important agronomic traits and kernel biochemical components were determined. Both HSGs and PFCs varied in the agronomic properties, but these variations were not atypical in HSGs if compared with those of PFCs. The average grain yield ranged from 6.19 Mega gram per hectare (Mg/ha) to 9.43 Mg/ha in HSGs and 5.77 Mg/ha to 10.23 Mg/ha in PFCs. Sugar accumulation in the kernels was found to be negatively correlated with flowering time, grain filling period and physiological maturity of the genotypes. Compared with PFCs, a higher amount of total soluble sugars (TSS) and a lower quantity of starch were recorded in HSGs, which resulted a significant negative correlation between kernel starch and TSS. The agronomic performance and kernel composition of HSGs, particularly with high kernel sugars and low starch contents suggest that these corn genotypes could be promising candidates for producing cost-effective ethanol during dry-grind process.

Item Type: Article
Uncontrolled Keywords: Corn hybrid; Grain yield; Sugary corn; Agronomic trait; Corn ethanol; Kernel composition
Subjects: Q Science > Q Science (General)
Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 14 Aug 2017 03:14
Last Modified: 14 Aug 2017 03:14
URI: http://eprints.um.edu.my/id/eprint/17679

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