In order to understand the genes distribution related to gluten strength,yellow pigment content,polyphenol oxidase(PPO) activity and 1BL·1RS translocation in Chinese winter wheat cultivars(lines) in the last decade.The allelic variations of Dx5, By8, Psy-A1, Ppo-A1 and 1BL·1RS were detected by using the functional markers.The results showed that the distribution frequencies of Dx5 and By8 related to gluten strength were 32.0% and 28.9%; The distribution frequencies of Ppo-A1a and Ppo-A1b related to PPO activity were 54.1% and 45.9%,and the frequencies of Psy-A1a and Psy-A1b related to yellow pigment content were 76.3% and 23.7%,respectively.The 1BL·1RS translocation lines accounted for 45.9% of the tested materials.The distribution of quality-related genotypes in different provinces was significantly different. The occurrence frequencies of 1BL·1RS translocation in Jiangsu,Henan and Shaanxi cultivars(lines) was 81.3%,57.2% and 35.7%,respectively,while the occurrence frequencies of 1BL·1RS in Hebei,Shandong and Beijing cultivars(lines) was 15.0%,8.7% and 8.3%,respectively. The frequencies of Dx5 and By8 in Hebei and Shandong cultivars(lines) were higher than that of other provinces.In Hebei and Shandong cultivars(lines),the frequencies of Dx5 is 60.9% and 45.0%,respectively,and the frequencies of By8 is 65.2% and 45.0%,respectively. The frequencies of Ppo-A1b, Psy-A1a were higher in Shandong,Beijing and Hebei cultivars(lines),and were 95.7%,83.3%,75.0% and 100.0%,83.3% and 80.0%,respectively.There were two non-1BL·1RS translocation lines with Psy-A1b/Ppo-A1b/Dx5/By8,and 23 non-1BL/1RS translocation lines with Psy-A1a/Ppo-A1b/Dx5/By8,which could be used as the parents in high quality noodle wheat breeding. The selected 12 1BL·1RS translocation lines with Psy-A1b/Ppo-A1b/Dx5 can be used as research materials to improve the quality of 1BL·1RS translocation lines. |