In contrast, LS+RF conditions resulted in 20�C24% decrease in Fe content in both the genotypes as compared to TS+RF conditions. Further, an increase (5�C21%) in Fe content was selleck Sorafenib observed in both the genotypes in response to RF conditions except in C 306 under LS conditions. Effect of sowing time and RF conditions on Zn contents was not significant in both years. In general, Zn content increased in response to RF conditions under ES conditions but decreased under TS and LS conditions in both genotypes (Table 3). Table 3Effect of sowing time on iron (mg/Kg) and zinc (mg/Kg) contents in mature grains of drought-susceptible (PBW 343) and drought-tolerant (C 306) wheat genotypes grown under irrigated and rain-fed conditions. Values are mean �� standard deviation …

Cultivar C 306 had lower tannin content as compared to PBW 343 under irrigated as well as RF conditions (Table 4). Trypsin inhibitor activity was more in C 306 as compared to PBW 343 irrespective of sowing time and irrigation conditions. The ES crop appeared to have higher trypsin inhibitor activity (Table 4). In ES and TS crops, on an average PBW 343 had slightly higher phytic acid content in irrigated crop (Table 4).Table 4Effect of sowing time on tannin (��gg?1 DW), phytic acid (mgg?1 DW), and trypsin inhibitor (units g?1 DW) contents in mature grains of drought-susceptible (PBW 343) and drought tolerant (C 306) wheat genotypes …4. DiscussionProteins are the most important components of wheat grains governing end-use quality. Both amount and composition of proteins determine the protein quality and hence end-use quality of wheat.

Environmental conditions during grain filling influence the accumulation of protein in the developing wheat kernel and can alter the functional properties of the resulting flour. Variations in both protein content and composition significantly modify flour quality for different end products. Although grain protein composition depends primarily on genotype, it is significantly affected by environmental Cilengitide factors and their interactions [17]. Increase in flour protein under water deficit conditions has been reported mainly due to higher rates of accumulation of grain nitrogen and lower rates of accumulation of carbohydrates. Irrigation, on the other hand, may decrease flour protein content by dilution of nitrogen with carbohydrates [18]. Changing the sowing time generated a large effect on the amount of TSP (Table 2), probably driven by the different thermal conditions prevailing during the grain filling period (Figure 1). This was particularly evident on comparing the early and late sowings. Similar results have been reported earlier [19].