Response of two wwheat cultivars to chlormequat (CCC) application

Abstract

Two field experiments were conducted at Deirab Agricultural Experiment Station, King Saud University, in the winter seasons of 1985-1986and 1986-1987to study the effect of cycocel application (500 ppm) on grain yield, yield components, and lodging of two wheat cultivars, Yecora rajo (semi-dwarf and lodging resistant cultivar) and Sama (tall and lodging susceptible cultivar). For the tall cultivar, Sama, CCC treatment tended to decrease lodging, increase number of spikes/m2, and kernel number/spike, con-sequently, increased the grain yield. However, CCC treatment increased only the grain yield in Yecora rajo, and did not change the other measured traits.