تحليل معامل المسار للحاصل و مكوناته لأصناف من حنطة الخبز L.Triticumaestivum و تأثرها بكميات البذار

الملخص EN

A Field experiment was conducted during 2014-2015 season at the out in the experiment station of Horticulture Ministry of Agriculture to within latitudes 31 and 32 north and longitude 21 and 44 east for the agricultural season 2014-2015 to study the analysis ofpath coefficient for the yield and its components of five varieties of wheat bread as main plot (Abu Ghraib, IPA 99, Hashema, Al-Iraq and Tamoz-3) and effect seeding rates (80, 120, 160, 200 and 240 kg.h1-) were used as parameters main plots randomized complete bloke designed and three replicates.

was used for this study following the characteristics spike length, number of spikelet/ spike, number of spikes .m2-, number of grains/ spike, 1000-grain weight, biological yield ton.

h -1, harvest index % and grainyield ton.

h -1 .

The results of the analysis ofpath coefficientshowed that harvest index had given direct effects in the grain yield at all seeding rates and also gave indirect effects in the grain yield by most other characteristics, Thedirect effects of 1000-grain weight was negative pill in all seeding rates also noted that the highest direct and indirect effect was found when the seeding rates 80 and 120 kg.h1-It can be conclude that harvesting guide can be used as selectivity marker to improve grain yield in breeding programs.