【摘要】 利用小麦显性雄性不育基因 Tal(ms2),通过多亲本聚合杂文和轮回选择建拓抗赤霉病基因库。通过表型轮回选择,可以使不同抗病基因重组积累,提高基因库中抗病基因和抗病基因型的频率,从而显著提高其抗赤霉病性。结合常规选育,可育成抗赤丰产的小麦新品种或抗赤性显著增强、农艺性状显著改进的新抗源。通过10多年的工作,已育成抗赤霉病丰产品系长江8809和 TFSL 037,高抗赤霉病的新种质 W14,高产品系长江9045、9046等。更多还原

【Abstract】 Development of scab-resistant gene pool through multiple-parent convergent cross and recurrent selec- tion using the dominant male-sterile gene Tal(ms2) is a new approach to breeding for resistance to scab (Gu.bereLLa zeae) in wheat.The experiment of more than 10 years indicates that it is strategically feasible and effective.The resis- tance of population has been significantly enhanced with the increase of frequencies of the resistant genes and geno- pes due to recombination and accumulation of various resistance genes by phenotypie recurrent selection.New resis- tant strains Changjiang 8809 and TFSL037,highly resistant gel"mplasm W14,high-yielding lines Changjiang 90,15 and 90,16, etc.have been developed jointly by this method and conventional selection.更多还原