Evaluation of Relative Efficiency of Several Selection Indices for Prediction of Expected Genetic Advance in Bread Wheat Grain Yield (Triticum aestivum L)

This experiment was conducted with fifteen genotypes of bread wheat introduced from ICARDA and two local varieties (Sham6 Abu-Graib3), using three rows spacing (15, 25 35 cm). All were grown in 7 December, 2017 at Field Crops farm (inside Mosul University) under rain fed conditions complementary irrigation, split plots randomized complete block design replications, for evaluation through constructing several selection indices calculation the expected gains grain yield. The analysis variance results studied traits (grain yield, plant height, number spikes, biological grains per spike, 1000-grain weight harvest index) showed that mean square highly significant spike 1000 weight. index constructed had high increase efficiency as compared direct indicate importance a based on combination characters. present study considered superior due to its highest efficiency. Using this revealed higher 109.961 genotype REYNA-12 difference over Abu-Graib3 is not others, followed by Sham6, ATTILA-7, PASTOR-2/BOCRO-2 HUBARA-5/3/SHA3/SERI//SHA4LLIRA. included study, Abu-Graib3) locates sequences 2 17 respectively.