关键词: 油用亚麻, 油用亚麻, 氮, 磷, 水分利用效率, 产量

Abstract: Understanding the performance of yield and quality traits for fresh sweet maize varieties in National Maize Regional Test could afford the basis for the breeding direction in the future. The fresh sweet maize yield and quality parameters from National Regional Test were analyzed using varieties from 2000 to 2015. There were 54 experimental units between 2013 and 2015, and the regional test distributed across the China provinces except for Qinghai, Tibet, Ningxia and Gansu, with the units numbers were highest for Guangzhou (five). In the past 16 years, there were 648 varieties take part in the Chinese Regional Test and only 43 varieties were authorized by National Maize Cultivar Registration Committee. The fresh ear yield, quality and physicochemical characteristics were different among years, regions and varieties. The fresh ear yield and taste quality scores of authorized varieties were 4.5% and 1.2 higher than the average values of tested varieties, respectively, while growth period, grain rate, grain weight, residue ratio, soluble sugar and reducing sugar content were similar to its average value. The correlation results indicated that longer growth period and higher grain weight were favored to improve fresh ear yield. The residue ratio was negatively correlated to soluble and reducing sugar content and pericarp thickness. The taste quality scores were significantly positive correlated to its items and the effects of pericarp thickness, sensory quality, smell and favor, and sweetness were higher than other parameters. In the future, the breeding objection of sweet maize should focus on the higher yield and better quality, in addition of anti-adversities.