关键词: 蚕豆, GGE双标图, 多年多点, 产量组分, 试点评价

Abstract:

The objective of this study is to evaluate the productivity components, stability, and adaptability of faba bean yield traits of advance lines in different pilots and select excellent lines adapted to different mage-environments. The representativeness and discriminating ability of each test-environment pilots were also evaluated, providing a basis for the selection of test-pilots. To measure plant height, grains of per plant, pods of per plant, the number of branches, 100-grain weight, and yield of per plot, a total of five advance lines [0215-1-4 (L1), 0208-3-1 (L2), 0208-3-2 (L3), 0323-2-1 (L4), and 0161-1 (L5)] and one control variety Henzheng ga candou (L6) were planted in 2017 and 2018 in Gansu province insix pilots including Countries of Hezheng, Kangle, Jishishan, Weiyuan, Linxia, and Zhang. The genotype and genotype with environment interactions of yield were analyzed by the combined analysis of variance and GGE biplot. The plot yield and plant height had no significant difference in genotype and environment interactions effect, all the other yield components had significant differences (P<0.01) in genotype effect, environmental effect, and genotype and environment interaction effect. There were very significant differences between genotype and year interaction on the number of branches, pods of per plant, grains per plant, and 100-weight grain (P<0.01) while there was no significant difference between plant height and grains of per plant. The correlation analysis showed that yield of per plot was significantly at P < 0.05 and positively correlated with pods of per plant, but negatively correlated with 100-grain weight. The GGE analysis demonstrated that the adaptability, yield, and stability of varieties (lines), as well as the ability of discrimination and the representativeness of pilots all had high GGE variation values, ranging from 78.54% to 97.38%. According to the adaptability analysis of faba bean varieties (lines), L3 had the highest yield adaptability in Kangle county, Jishishan county, Weiyuan county, Linxia county, and Hezheng county in 2018. According to the stability analysis, the varieties (lines) with the high yield in order were L3 > L2 > L6 > L4, and the varieties (lines) with the high stability in order were L4 > L1 > L5 > L3. The discriminating ability of the pilot was Kangle county in 2017, followed by Jishishan county in 2017 and 2018, and the representativeness of the pilot was Weiyuan county in 2017, followed by Kangle county in 2018 and Jishishan county in 2018. The lines with stable and high yield were L3 and L4. Combined with the ability of distinguishing and representativeness of the pilot, the most ideal mage-environment was Jishishan county. Based on GGE biplot data, faba bean with superior yield-trait components were identified in Gansu province and provided a reference base for comprehensive evaluation of faba bean varieties.

Key words: faba bean, GGE biplot, multi-years and sites, yield component traits, pilot evaluation