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Variation of resistance to Pseudocercosporella herpotrichoides (Fron) Deighton in wheat genotypes carrying the gene Pch‐1
Author(s) -
Lind V.
Publication year - 1999
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1046/j.1439-0523.1999.00388.x
Subject(s) - biology , germplasm , genotype , resistance (ecology) , cultivar , gene , poaceae , ploidy , genetics , botany , horticulture , agronomy
The effect of the gene Pch‐1 on the resistance of wheat to Pseudocercosporella herpotrichoides was studied at four growth stages. The germplasm used consisted of adapted cultivars, genotypes provided by European plant breeders, near‐homozygous lines and double haploid lines developed from our own breeding projects. The resistance was measured by ELISA. At all growth stages, genotypes carrying Pch‐1 differed significantly in resistance. At early growth stages, there was a strong effect of the gene in most genotypes, but later the effect decreased and significant genotypes‐environment interactions appeared. In addition, minor genes became more important and determined the level of adult plant resistance that proved to be inherited quantitatively. Pch‐1 was of minor importance for this type of resistance. It is concluded that a high and long‐lasting resistance level could be attained if the two genetically different sources of resistance were combined (resistance at juvenile stages, induced by Pch‐1 , and quantitative resistance at adult stages).