Abstract: Adverse resistance breeding was carried out with Taigu nuclear sterile wheat by three methods such as the half sib-mating improving recurrent selection, the mass recurrent selection and the alternate-generation backcrossing recurrent selection. Notable effects have been obtained in torrid Tests Tance and the main yield characters as the kernel number of main spike, kernel weight per plant and 100-kernel weight by the half sib-mating and the mass recurrent selections. The half sib-mating recurrent selection was better than the mass recurrent selection. There was significant effects for improvement of lowering the plant heights by the half sib-mating recurrent selection, but there was no effect by the mass recurrent selection. All the main economic characters of the populations showed the trend of the selective targets with decay of variability. Selected line which was made from Fengkand 2 by the alternate-generation backcrossing recurrent selection for twice was better than Fenkang 2 in torrid resistance,cold resistance and synthetic characters. Promising fertile plants exceeded their parents were separated in all kinds of populations, with which a lot of elite lines and specific materials have been obtained and tested in the regions.

Key words: Taigu nuclear sterile wheat, Dominant sterile gene, Population improvement, Recurrent selection

CLC Number: 

• S332