Evaluation of Some Genotypes of Sorgo (Sorghum bicolor L.) as Genetic sources suitable for Different Tillage systems.

Abstract

The experiment was conducted in the fields of Al-Hawija Technical Institute/ Al-Hawija/ south west of Kirkuk on 12th April 2013. The experiment was done in a muddy mixed soil to study the features of some genetic structures of sorghum bicolor. L and evaluate its importance as genetic sources which suitable to the different systems of tillage The experiment consist of two features. The first was the depth tillage, normal tillage and zero tillage while The second factor was ten genetic structures (Inqadh,Mahali, Spain Veeto, sorghum bicolor. L , Rabih, Packestinian, Imperial, Deligrass, Hayking and Sorghum Sudanian. The experiment was done according to the sectors in split plot design. These sectors were of main sectors of cultivation , secondary sectors and triple cultivation. The results showed no difference in farming without cultivation in all growth and aggregate of sorghum bicolor. L. farming without cultivation had more growth of the plants which is (161.93 cm). leaf area during blossoming of 20 days were (343.67 and 369.23 cm) and in the growing of leaf area after blossoming was (85.36 cm/ day). The biological aggregate had (23.48 ton/h.). The genetic structures had shown differences in most of the studied characters for growth, aggregating and its contents as follows concerning aggregate. The Spain Veeto had got the supreme in the number of branches ( 9.55 bransch). The Veeto was (927.98 seeds).The Packestinian weighs (55.65 gm). per thousand seeds and the same plant had got (2.721 ton per h). The sorghum which tpe the supreme in biological cultivation which (28.56 ton). Concerning the number of seeds. The Spain Veeto was the supreme in the farming which was (1347.5). In weigh Al-Mahali was the supreme which was (60.55 gm).