河西冷凉灌区甘蓝型春油菜制种技术研究

Study on the Hybrid Seed Production Techniques of Spring Brassica Napus in Cool Irrigation Region of Hexi Area

通过不同海拔、不同播期、不同父母本行比对甘蓝型春油菜制种产量的影响研究其制种技术,结果表明,在甘蓝型春油菜制种时,同一父母本行比,海拔高的地区产量高;同一海拔,父母本行比与产量呈正相关。得出在河西冷凉灌区进行甘蓝型春油菜制种时,应选择早播、高海拔、父母本大行比与及时割除父本行的制种模式,以求获得理想的制种产量。

The effect of different altitudes, different sowing dates and different male parent anct temale parent une-raze on spring Drassica Napus hybrid seed yield was studied. The results indicated that hybrid seed production of spring Brassica Napus should be selected in high-altitude areas. In the same line-rate condition,higher yield could be obtained in high elevational regions. In the same altitude condition,line-rate was correlated positively with seed yield. In order to get ideal hybrid seed yield,a new seed productive pattern which was conditions of early sowing,high-altitude ,multi-line and cutting offmale parent timely was effective when hybrid seed production of spring Brassica Napus was carried in the cool irrigation.