Evaluation of Some Rye Introgressed Wheat Derivatives to Leaf Rust and Powdery Mildew Diseases

Evaluation of 34 elite hexaploid triticale (X triticosecale) x bread wheat (Triticum aestivum L) derivatives (RL-accessions) revealed that 10 genotypes viz. RL 111-3P₂, RL 113-1P₂, RL 116P₃, RL 124-2P₂, RL 136P RL 136-1P₁, RL 137P₁, RL 138P₂, RL 140P₁ and RL 141P₂, were resistant to leaf rust (Puccima recondata J sp tritict race 77.1) and 13, namely RL 105-1P₂, RL 107P₁, RL 110P₁, RL 112P₁, RL 117-2P₂, RL 124-2P₂, RL 28-2P₂ RL 133-1P₁, RL 136P₂, RL 139-1P₁, RL 141-1P₂, RL 142P₂, and RL 143P₂ were resistant and 4 moderately tesistant to powdery mildew (Erystphe graminis f sp tritict). However, three derivatives viz., RL 124-2P₂, RL 136P₁ and RL 140P₁ showed resistance to both the diseases at seedling stage. Rest of genotypes were moderate to highly susceptible.