6个油葵雄性不育系在兰州的主要性状表现

Main Characters of 6 Male Sterile Lines of Oil Sunflower in Lanzhou

[目的]研究6个油葵雄性不育系在兰州的主要性状表现。[方法]在田间将恢复系、不育系与保持系依次相邻播种,生育期记载物候期、植物学特征及农艺性状表现,开花后观察育性,统计不育株率。通过不育系自交,人工杂交和异交,测定不育系结实率、亲和指数和主要经济性状。[结果]6个不育系生育期为112～122d,不育株率均为100%,自交结实率为0,与恢复系杂交结实率为77.55%～91.76%,异交结实率为84.24%～92.12%,亲和指数为0.7830～0.9050,子实含油率39.58%～50.22%。[结论]6个不育系育性遗传稳定,综合农艺性状表现较好;6个不育系的杂交亲和力差异显著,同一不育系与不同恢复系的杂交亲和力也存在差异。其中F15-2A综合农艺性状表现最突出。

[ Objective ] The aim was to study main characters of 6 male-restorer lines of oil-sunflower in Lanzhou. [ Method] In the field restorer lines, male-sterile lines and maintainer lines were planted in turn. Agronomic characteristics, botanical characteristics, phonological period were recorded in the growth period and sterile rate was counted after blossoming. With self-crossing, artificial crossing and out crossing methods, seeding rate, compatibility index and economic characters were measured, [ Result ] Growth period of 6 malesterile lines were 112 - 122 d, sterile rate, self-fruitful rate, seed setting rate of hybridization and outcrossing rate were 100% ,0, 77.55% -91. 076% ,84.24% - 92. 12% respectively, compatibility index was 0.783 0 -0. 905 0 ,and oil content of seed was 39.58% -50.22%. [Conclusion] 6 male sterile lines had stable fertility, and integrated agronomic characters were good. Notable distinctions lied in the different male sterile lines, and hybridization compatibility of the same male sterile lines and different restorer lines was different. Agronomic characters of F15-2A was outstanding in 6 male sterile lines.