& Al- Hassan M. REGULATION OF TILLERING IN WHEAT AND ITS RELATIONSHIP WITH GRAIN YIELD 1.CONTRIBUTION PERCENTAGES OF THE MAIN STEM AND PRIMARY TILLERING THE NUMBER OF SPIKES AND GRAIN YIELD. Iraqi J. Agric. Sci. [Internet]. 2017 Apr. 19 [cited 2024 Nov. 22];48(2). Available from: https://jcoagri.uobaghdad.edu.iq/index.php/intro/article/view/420