Genetic variability, heritability and genetic advance of stomatal frequency in wheat, Triticale and Barley
Abstract
The stomatal frequency on adaxial and abaxial leaf surfaces in Triticum aestivum, Triticum durum, Triticum aestivum x Secale cereale and barley (Hordeum vulgare) consisting of 80, 14, 4 and 4 promising genotypes, respectively, was studied. The genetic varlability, phenotypic, genotypic coefficient of variation, herltability and genetic advance, were estimated. Considerable amount of phenotypic and genotypic varlability was observed for stomatal frequency on abaxial surface in triticale and barley. All the four groups of crops have high magnitude of genetic variability among genotypes, high heritability and moderate genetic advance, indicating that importance should be given to stomatal count in selection programme, as they will express truly in succeeding generation. The stomatal frequency is associated with grain yield and nag leaf area. It was observed that stomatal count has highly negative correlation with grain yield per ear but positive with nag leaf area. Genotypes with large nag leaf with low stomatal count are high yielders.
Keywords
Genetic variability, heritability, stomatal frequency, wheat, triticale, barley
