关键词: 燕麦, 陇中半干旱区, 农艺性状, 籽粒产量, 营养价值, 灰色关联度分析

Abstract: In order to evaluate the adaptability of the introduced oat variety in the semi-arid area of the Loess Plateau in central Gansu,this study compared the agronomic characteristics,seed yield,and grain nutritional quality of nine oat (Avena sativa) varieties to select suitable oat varieties for production and utilization in the semi-arid area of central Gansu. The results showed that the nine oat varieties belonged to the medium maturity type and could mature locally. There were significant differences in agronomic traits,seed yield,and grain nutritional quality among varieties (P<0.05). The plant height and ear length of ‘Diyan No.1’ were the highest at 153.00 cm and 32.50 cm,respectively,but the seed yield was the lowest at 1 734.20 kg·hm^-2. The number of grains per spike and the grain weight per spike was the highest in ‘Weiduyou No.5’,which were 128.43 grains and 2.84 g,respectively. The seed yield and starch content of ‘Jinyan No.17’ were the highest at 2 500.00 kg·hm^-2 and 53.68%,respectively,but the lowest crude protein content was only 15.95%. ‘Zhangyou No.8’ had the highest thousand-grain weight of 28.20 g,and ‘Zhangyou No.9’ had the highest crude protein content,which was 18.75%.'Bayou No.18’ had the highest β-glucan and crude fat content,which were 4.37% and 6.35%,respectively. The agronomic characters,seed yield,and grain nutritional quality indexes of nine oat varieties were comprehensively analyzed by using the method of grey correlation theory. It was concluded that ‘Jinyan No.17’'Weiduyou No.5’ and ‘Diyan No.1’ had better comprehensive characters,and were suitable for planting and popularization in the semi-arid area of the Loess Plateau in Central Gansu.

Key words: Oat, Semi-arid area in central Gansu, Agronomic traits, Grain yield, Nutritional value, Grey relational analysis