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GrainGenes Reference Report: TAG-90-471

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Reference	TAG-90-471
Title	Diallel analysis of the latent period of stripe rust in wheat
Journal	Theoretical and Applied Genetics
Year	1995
Volume	90
Pages	471-476
Author	Ghannadha M Gordon I Cromey M McEwan J
Abstract	A half diallel was made amongst five wheat (Triticum aestivum L. genotypes of which one was susceptible, while the others had adult-plant resistance, to stripe rust (Puccinia striiformis West. The five parent and ten F1 progeny were grown in the glasshouse and were inoculated with three rust pathotypes at the seedling stage The latent period was measured on the first leaf Two procedures were used to analyze the half diallel. Both methods showed that the average effects of alleles were of much greater importance than was dominance in conditioning resistance in response to two of the pathotypes, while for the third pathotype dominance was important. Resistance was conditioned by partial dominance for two pathotypes whereas for the third it was determined by full dominance. Broad-sense heritabilities range from 60-73% and the number of genes involved was different (from 1 to 4), depending on the pathotype.
Keyword	[ Hide all but 1 of 13 ] alleles diallel-analysis disease resistance dominance general-combining-ability genes genotype heritability pathogenesis puccinia striiformis rust-diseases specific-combining-ability triticum aestivum

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