Genotypic variability in wheat and triticale for grain yield and its components under normal and late sown conditions
Abstract
The objectives of present investigation were to determine the genetic variability, estimation of
association between grain yield and its component traits and among themselves to find out the
correlation with agro-meteorological parameters of 28 genotypes of wheat and triticale under
two dates of sowing. Significant variability was observed among genotypes for all the traits
under both the environments. Genotypes WH1105, WH1142, HD 3086, WHD 948 and TL
3004 have been found promising for grain yield under favorable environment. Grain yield per
plant showed highly significantly and positive phenotypic correlation with biological yield
per plant, harvest index, number of grains per spike and 1000-grain weight. The path
coefficient analysis revealed that Biological yield per plant registered the highest direct and
positive effects on grain yield per plant followed by harvest index. Nutrient uptake and use
efficiency was higher in triticale and synthetic wheat under late sown conditions. Triticale and
synthetic have a low value of HSI showing its low susceptibility to elevated temperature
which can be utilized in heat tolerance breeding programme.
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