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GrainGenes Reference Report: PBR-120-39

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Reference	PBR-120-39
Title	Rapid introduction of disease resistance from rye into common wheat by anther culture of a 6x triticale x nulli-tetrasomic wheat
Journal	Plant Breeding
Year	2001
Volume	120
Pages	39-42
Author	Zhang XQ Wang XP Ross K Hu H Gustafson JP
Abstract	Summary: Powdery mildew (caused by Erysiphe graminis) and yellow rust (caused by Puccinia striiformis) are the two most serious wheat diseases found in China. Rye chromosomes, carrying genes for resistance to these diseases, were introduced into common wheat in two generations using chromosome engineering and anther culture. The F1 hybrids from a cross involving a hexaploid triticale (x Triticosecale Wittmack) x 'Chinese Spring' nulli-tetrasomic N6DT6A wheat aneuploid line were anther cultured and doubled-haploid plants were regenerated. Using genomic in situ hybridization, C-banding and biochemical marker analyses, one of the anther-cultured lines (ZH-1) studied in detail, proved to be a doubled-haploid with one rye chromosome pair added (1R) and a homozygous 6R/6D substitution (2n = 44). The line was tested for expression of disease resistance and found to be highly resistant to powdery mildew and moderately resistant to yellow rust
Keyword	[ Hide all but 1 of 47 ] alpha amylase aneuploid anther culture c banding china chinese chinese spring chromosome common wheat cross culture disease disease resistance doubled haploid erysiphe erysiphe graminis gene generation genomic in situ hybridization graminis hexaploid hexaploid triticale hybrid hybridization in situ in situ hybridization isozyme marker mildew powdery mildew powdery mildew resistance puccinia puccinia striiformis resistance resistant rust rye rye chromosomes secale cereale situ hybridization spring substitution triticale triticosecale triticum aestivum x triticosecale yellow rust

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