Abstract In order to study the inheritance of grain yield and its components in bread wheat, two cultivars, Karchyya(drought and salinity tolerant) and Gaspard (sensitive to drought and salinity stress) were crossed.Parents together with F1, F2, F3, BC1and BC2 generations were evaluated using a randomized complete block design with three replications in 2008-2009 growing season.Grain weight per...

Wavelet methods such as standard thresholding techniques are commonly used to estimate a nonparametric regression function from noisy sample data, under the traditional assumption that noises have constant variance. In situations where data have nonconstant variance, these standard techniques do not work well in estimating the regression function unless the heteroscedasticity is taken into acco...