تحديد أهم الصفات المحددة لحاصل الحبوب في محصول الحنطة باستخدام تحليل معامل المسار

الملخص EN

Field study was conducted at Malha irrigation project which partially reclaimed in marshland of Al madina district located (105 km) North West of Basra province during the growing season of 2012 – 2013 in clay loam soil to evaluate wheat cultivars (Triticum aestivum L.

) by using path coefficient analysis.

The experiment included (15) that treatments resulted five soft wheat cultivars Latifia, Tammoz2, IPA-99, Abu-Graib and IpA95 and Split plot design with randomized completely block design was used in three replicates.

the correlation of grain yield was studied in the component of grain yield, number of spikes m -2.

the seeds numbers per spike and weight of 1000 seeds.

The analysis of path coefficient genetically and morphological showed that number of spikes m2 gave highest positive direct effect genetically and morphological in seeds yield 0.492 and 4.439 respectively followed by weight of 1000 seeds which gave positive direct genetic effect 0.313 in seeds yield and negative morphological effect -4.618.

Spike number m -2 and weight of 1000 seeds gave highest positive genetic correlation 0.589 and 0.479 with seeds yield respectively, the seeds numbers per spike and number of spike m-2 and weight of 1000 seeds gave highest positive morphological correlation 0.324, 0.309 and 0.179 with seeds yields respectively.