The objective of this study was estimate the response to individual plant selection in early generation though direct and indirect selection for increased grain yield was carried out. The selection intensity of 10 % approximately was used with direct selection and with indirect selection using yield component in wheat, i.e. number of spikes per plant, Number of kernels per spike and 1000-kernel weight in gm. In 2009/2010, at the SIDS Agricultural Research Station conditions, Agricultural Research Center, Egypt. Promising lines in F5 for each criterion were evaluated under flood irrigation. The high selected lines (20 lines) from direct and indirect selection for high yielding for each criteria (grain yield/plant "direct selection", number of spikes per plant, Number of kernels per spike and 1000-kernel weight in gm "indirect selection") and the two parents also, two check (Sids 12 and Sids 13) were evaluated in nested design with three replications in each population. In first population was the selection of high number of grain/spike, gave the highest grain yield/plant. In second population the selection of high number of spike/plant, gave the highest grain yield/plant. The results indicated that selection for indirect selection was more efficient in breeding for word superior yielding F5 lines. |
