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GrainGenes Reference Report: TAG-99-561

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Reference	TAG-99-561
Title	Quantitative trait loci associated with resistance to Fusarium head blight and kernel discoloration in barley.
Journal	Theoretical and Applied Genetics
Year	1999
Volume	99
Pages	561-569
Author	de la Pena RC [ Show all 8 ]
Abstract	Summary: Resistance to Fusarium head blight (FHB), deoxynivalenol (DON) accumulation, and kernel discoloration (KD) in barley are difficult traits to introgress into elite varieties because current screening methods are laborious and disease levels are strongly influenced by environment. To improve breeding strategies directed toward enhancing these traits, we identified genomic regions containing quantitative trait loci (QTLs) associated with resistance to FHB, DON accumulation, and KD in a breeding population of F(4:7) lines using restriction fragment length polymorphic (RFLP) markers. We evaluated 101 F(4:7) lines, derived from a cross between the cultivar Chevron and an elite breeding line, M69, for each of the traits in three or four environments. We used 94 previously mapped RFLP markers to create a linkage map. Using composite interval mapping, we identified 10, 11, and 4 QTLs associated with resistance to FHB, DON accumulation, and KD, respectively. Markers flanking these QTLs should be useful for introgressing resistance to FHB, DON accumulation, and KD into elite barley cultivars
External Databases	http://link.springer.de/link/service/journals/00122/bibs/9099003/90990561.htm
QTL	MetaQ.FHB_1H_3 [ Show all 27 ]
Keyword	[ Hide all but 1 of 37 ] barley black point blight chromosome maps composite interval mapping deoxynivalenol discoloration disease resistance don environment fungal diseases fusarium fusarium head blight genetic mapping genetic markers genotype environment interaction gibberella zeae heading date hordeum vulgare inheritance kernal blight kernel discoloration kernels linkage linkage groups linkage maps loci mapping minnesota plant composition plant height quantitative traits resistance rflp scab screening vomitoxin

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