تــأثير نسجة التربة وموعد الزراعة في مورفولجية جذور خمسة أصناف من الحنطة L. Triticum aestivum

Abstract

An experiment was conduted at Al _ bargah district (30km) north east kerbala governorate during the winter season of (2007 -2008) in a plastic pot culture. The objective was to find out the effects of soil texture and sowing dates (1/11 , 15/11 , 30/11/2007) on the root morphology of various durum wheat genotypes (Iraq , Adnania , Abu-Ghraib -3 , Ashour , IPA -99-).A Factorial experiment within a Completely Randomized Design was adopted. The results of the present study indicated that , the silty loam soil produced the highest value of root length , while sandy loam soil gave higther root volume and root diameter. The second sowing date (15/11) gave the highest values of root length while the third sowing date (30/11) gave higher root volume and root diameter. Ashour cultivar gave the highest values of root volume and diameter. There was a significant interaction between soil texture , sowing dates and cultivars for all traits measured in this study.