Estimation the extent of inbreeding depression in F2 hybrids of hexaploid bread wheat
Azra Gandahi, Mazhar Hussain Rind, Zainullah Khan, Naila Gandahi, Sanober Gandahi, Abdul Wahid Baloch
The present study was conducted to quantify the inbreeding depression in six F2 hybrids. The genotypes (parents and F2 populations) of bread wheat differed significantly (P≤0.01) for yield and its components, signifying that ample genetic diversity is presented in evaluated genotypes for studied characters. Considering inbreeding depression, the F2 progeny Anmol-91 x SKD-1 displayed low extent of inbreeding depression for tillers plant-1 (-0.7.41%), spike length (-15.82%), grains spike-1 (-3.58%) and seed index (-0.21%); while, F2 progeny Anmol-91 x Khirman for grain yield plant-1 (-3.62%). Of the particular note, these above mentioned F2 progenies may be proved useful F2 hybrids for commercial cultivation.