Effects of growth conditions on grain molding and phenols in sorghum caryopsis

Waniska, R D and Poe, J H and Bandyopadhyay, R (1989) Effects of growth conditions on grain molding and phenols in sorghum caryopsis. Journal of Cereal Science, 10 (3). pp. 217-225. ISSN 0733-5210

PDF - Published Version Restricted to ICRISAT users only Download (1MB) | Request a copy

Abstract

Received 9 March 1989; Available online 27 July 2009. Phenolic compounds (PC) and phenolic acids (PA) were quantified in mature caryopses of sorghum grown in wet or dry environments. Seventeen cultivars varying in pericarp color and presence of a pigmented testa exhibited different levels of resistance to molding in the wet environment. Sorghum caryopses with a white pericarp contained lower levels of free PC (14μg/caryopsis) than those with a red pericarp (41 μg/caryopsis) when grown in the dry environment. This difference diminished under humid conditions. Cultivars with a pigmented testa were more resistant to grain molding, contained higher levels of free PC (151 μg/caryopsis), and had a softer endosperm texture than cultivars without a pigmented testa. In cultivars without a pigmented testa, higher levels of free PC and free PA, especially free p-coumaric, ferulic, and caffeic acids, were observed in mold-susceptible cultivars. A scatter plot of free PC vs. free p-coumaric acid indicated that mold-susceptibility was related to higher levels of p-coumaric acid, regardless of environment.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Sorghum
Depositing User:	Mr Charan Sai Ch
Date Deposited:	08 Nov 2011 13:19
Last Modified:	08 Nov 2011 13:19
URI:	http://oar.icrisat.org/id/eprint/3746
Official URL:	http://dx.doi.org/10.1016/S0733-5210(89)80051-7
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

View Statistics

Actions (login required)

View Item