Uneasy unions: Quality effects of rye chromatin transfers to wheat

被引:120
作者
Graybosch, RA [1 ]
机构
[1] Univ Nebraska, USDA ARS, Lincoln, NE 68583 USA
关键词
wheat; rye; chromosomal translocations; processing quality;
D O I
10.1006/jcrs.2000.0336
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
A number of genes of agronomic importance have been transferred from rye (Secale cereale L.) to its close relative, common bread wheat (Triticum aestivum L). Largely through the production of interspecific chromosomal translocation and substitution lines, rye chromatin now resides within the genome of a large number of wheat breeding lines and cultivars. Rye chromosomal materials have been used to transfer resistance genes to fungal pathogens, especially rusts and powdery mildew, resistance to insect peals, and, in some cases, may enhance grain yield, grain yield stability, and grain protein content. Unfortunately, the transfer of some rye chromosomal materials has resulted in deleterious effects on grain processing quality. This report reviews the use of various wheat-rye chromosomal translocations and substitutions in wheat breeding programs, examines the nature of the observed quality defects, and speculates as to their causes and possible means by which the quality effects might be ameliorated.
引用
收藏
页码:3 / 16
页数:14
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