ISSN:
1573-5060
Keywords:
Triticum aestivum
;
wheat
;
Puccinia recondita tritici
;
leaf rust
;
rust resistance
;
slow rusting
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Genes conferring low seedling reaction to Mexican pathotypes of Puccinia recondita f. sp. tritici in 71 bread wheat (Triticum aestivum L.) cultivars from India and Pakistan were postulated. In total, 9 known and one unknown genes were identified, either singly or in combination: Lr1 (in 20 cultivars), Lr3 (5), Lr10 (21), Lr11 (1), Lr13 (43), Lr17 (5), Lr23 (14), Lr26 (2), Lr27 + Lr31 (2), and the unknown gene in 2 cultivars. Additional temperature-sensitive seedling resistance appeared to occur in 27 cultivars. This resistance in at least 15 cultivars appeared to be due to Lr34. Area under the disease progress curve (AUDPC) for these 27 cultivars indicated variable levels of adult plant resistance. Several other cultivars with high seedling infection types to one or more of the predominant field pathotypes were also partially resistant in the field. High levels of adult plant resistance occurred in some cultivars even in the absence of known seedling resistance genes with major effects.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00040475
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