The Effect of Differential Irrigation, Time and Frequency of Nitrogen Application on Proline Accumulation in Wheat Grown under Qatari Conditions PDF

Keywords

proline, irrigation, wheat

Abstract

Wheat (Triticum aestivum cv. Condore) was given three irrigation treatments and a split-dose of urea during the winter of 1980-1981 to examine some of the yield components and to estimate proline accumulation through the effects of water stress and nitrogen status of the tissue. Height of the plant was measured, tiller number per plant was counted and free-proline was determined during the various stages of the crop growth. Under nitrogen deficiency and water stress, proline accumulation was impaired in wheat leaves. Prokine accumulation was rapid under reasonable nitrogen levels and water stress. The results indicate that proline accumulation in wheat is correlated with the nitrogen status of the leaf tissue. This should be taken into account in breeding programs where free-proline accumulation is used to indicate drought resistance.