COMPARISON OF VARIABILITY GENERATED THROUGH BIPARENTAL
MATING AND SELFING IN BARLEY (HORDEUM VULGARE L.)
B. AGDEW*, S. R. VERMA AND R. P. SAHARAN
Wheat & Barley Section
Department of Genetics & Plant Breeding
CCS Haryana Agricultural University,
Hisar-125 004 (Haryana), India
*(e-mail : agdew_bek@yahoo.com)
Received : 16 August 2014; Accepted : 5 September 2014)
SUMMARY
The experiment was conducted to examine the extent of genetic variability generated through biparental mating and selfing for yield and related components in three inter-varietal crosses of barley, namely, IBON-W-61 x DWR 91(Cross I), BH 935 x BH 902 (Cross II) and BH 902/DWRUB 64 (Cross III). The BIPs and F3 populations were grown in a compact family block design with three replications spaced at 30 and 15 cm between plots and plant, respectively. Data were recorded on 10 agronomic traits and subjected to different statistical analyses following their standard procedures. Considerable variation was observed among families for almost all the traits in both F3 and BIPs of three crosses. When comparing the performance BIPs and selfed progenies for most of the traits, higher mean and wider range values were observed in BIPs than in F3 except cross I, in which the range values were wider in F3 for all the characters. The phenotypic and genotypic coefficients of variations were higher in BIPs for grains/spike, biomass yield/plant, grain yield/plant and days to heading in cross II; and for effective tiller number/plant, biomass yield/plant, grain yield/plant, harvest index and 1000-grain weight in cross III, while the PCV and GCV values were higher for all traits in F3 in cross I. Similarly, higher broad sense heritability and genetic advance as per cent of means followed the same pattern as PCV and GCV in every cross.
Keywords : Biparental, phenotypic coefficient of variation, genotypic coefficient of variation, heritability, genetic advance, barley