Maize (Zea mays L.) Genetic Factors for Preventing Fumonisin Contamination
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- 作者：Ana Butró ; n ; Rogelio Santiago ; Pedro Mansilla ; Cristina Pintos-Varela ; Amando Ordá ; s ; Rosa Ana Malvar
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2006
- 出版时间：August 9, 2006
- 年：2006
- 卷：54
- 期：16
- 页码：6113 - 6117
- 全文大小：42K
- 年卷期：v.54,no.16(August 9, 2006)
- ISSN：1520-5118
文摘
Fusarium moniliforme and Fusarium proliferatum are the most frequently isolated fungi from maize(Zea mays L.) in Spain. Both Fusarium species produce toxins potentially dangerous for animalsand humans, the fumonisins being the most significant of those toxins. White maize is preferred forhuman consumption, and extra care should be taken to avoid kernel mycotoxin contamination. Theobjectives of this study were to identify and quantify kernel infection by Fusarium spp. andcontamination by fumonisin on white maize hybrids, to search for white maize sources of resistanceto infection by Fusarium spp. and mycotoxin contamination, and to preliminarily study the geneticsinvolved in such resistances. Ten F1 single crosses derived from a diallel mating design among fivewhite maize inbreds were evaluated in a randomized complete block design with three replicationsin 2002 at two locations. Fusarium verticilloides and F. proliferatum were detected on kernels ofwhite maize hybrids cultivated in northwestern Spain. No differences in fungal infection were foundamong maize genotypes, but differences in fumonisin contamination were significant and could berelated, in part, to differences in husk tightness. Among the genotypes studied, general combiningability (GCA) effects were the most important for resistance to fumonisin contamination. Inbreds EP10and EC22 showed the most favorable GCA effects for husk tightness and fumonisin content, and thecross between them, EP10 × EC22, had the most favorable specific combining ability (SCA) effectfor husk tightness. Inbreds EP10 and EC22 showed favorable GCA effects for fumonisin contaminationand husk tightness, and the cross EP10 × EC22 was the only one with an average fumonisin levelbelow 1 
ntities/mgr.gif">g/g. Although this should be confirmed with more extensive studies, white maize inbredsdeveloped from white maize landraces could be sources of resistance to fumonisin contamination.
ntities/mgr.gif">g/g. Although this should be confirmed with more extensive studies, white maize inbredsdeveloped from white maize landraces could be sources of resistance to fumonisin contamination.