| The purpose of this study was to clarify the effect of nitrogen application rate on raw grain quality and wine quality of waxy wheat and non-waxy wheat,and to promote the production of high-quality raw grain of wine wheat and improve liquor flavor. Two varieties of M902 and Z168 were used as materials,and six nitrogen application rates(0,45,90,135,180 and 225 kg·hm-2) were set to determine the effect of nitrogen application rate on wheat yield,raw grain quality and liquor-making quality.The results showed that there was no significant difference in yield and effective panicle between the two tested wheat varieties. With the increase of nitrogen application rate,the effective panicle,grain number per panicle and yield of the two wheat varieties increased,with the maximum occurring at the treatment of 225 kg·hm-2. With the increase of nitrogen application rate,the grain protein,fat and ash contents of the two wheat varieties increased,which were higher under the treatment of 135 kg·hm-2. The amylose content and amylose-branch ratio of M902 were the highest at 180 kg·hm-2,which were 22.6% and 0.641,respectively. The amylopectin content was the highest at 45 kg·hm-2,which was 42.6%. The amylose content and amylose/amylopectin ratio of Z168 were the highest under the treatment of 45 kg·hm-2,3.9 % and 0.058,respectively. The amylopectin content was the highest under the treatment of 90 kg·hm-2(69.3%).Compared with Z168,M902 had higher liquor yield,lower total acid and total ester content. Increasing nitrogen fertilizer significantly reduced total acid content but increased total ester content.Within the range of 90-135 kg·hm-2,the yield of the two varieties was higher,and the contents of total acid and total ester were more coordinated.Correlation analysis showed that the liquor yield was significantly positively correlated with amylose and flour yield,but negatively correlated with fat.Total acid was significantly positively correlated with total starch,amylopectin and fat,but significantly negatively correlated with flour quality. Total esters were significantly negatively correlated with ash content.The results showed that M902 and Z168 had advantages in brewing quality. M902 had high liquor yield,and Z168 had better ester production characteristics.In the N application range of 90-135 kg·hm-2,the protein content of the two varieties was suitable,the total starch and amylopectin content were high,the ash content was high,the fat content was suitable,and the liquor yield and total acid content were also high,which were the nitrogen application range suitable for brewing purposes of waxy wheat and non-waxy wheat in western Sichuan plain. |
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